EP3656937B1 - Structural element for heat insulation - Google Patents

Structural element for heat insulation Download PDF

Info

Publication number
EP3656937B1
EP3656937B1 EP18207451.8A EP18207451A EP3656937B1 EP 3656937 B1 EP3656937 B1 EP 3656937B1 EP 18207451 A EP18207451 A EP 18207451A EP 3656937 B1 EP3656937 B1 EP 3656937B1
Authority
EP
European Patent Office
Prior art keywords
anchoring
heat insulation
central portion
structural element
elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18207451.8A
Other languages
German (de)
French (fr)
Other versions
EP3656937C0 (en
EP3656937A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schoeck Bauteile GmbH
Original Assignee
Schoeck Bauteile GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schoeck Bauteile GmbH filed Critical Schoeck Bauteile GmbH
Priority to EP18207451.8A priority Critical patent/EP3656937B1/en
Publication of EP3656937A1 publication Critical patent/EP3656937A1/en
Application granted granted Critical
Publication of EP3656937C0 publication Critical patent/EP3656937C0/en
Publication of EP3656937B1 publication Critical patent/EP3656937B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/003Balconies; Decks
    • E04B1/0038Anchoring devices specially adapted therefor with means for preventing cold bridging

Definitions

  • the present invention relates to a thermal insulation component according to the preamble of patent claim 1.
  • components for thermal insulation are known in the prior art, which are primarily used to support building parts that protrude from buildings, such as balcony slabs, through a thermally insulated component joint.
  • the integrated reinforcement elements ensure the necessary force and torque transmission, while the insulating body is responsible for thermally insulating the two components while leaving a joint.
  • tensile reinforcement elements are provided in the relevant state of the art, which are usually made of a rod material made of metal, which consists of stainless steel in particular in the area of the insulating body and of reinforcing steel in the area outside the insulating body.
  • Stainless steel is used in the area of the insulator or the component joint on the one hand because of its corrosion resistance and on the other hand because of its poor thermal conductivity and is therefore preferable to reinforcing steel material in the area of the insulator.
  • the reinforcing steel material on the other hand, is mostly used in the area outside of the insulating body, where neither corrosion resistance nor thermal insulation properties are important, since the reinforcing steel extends completely in the area of one of the two components.
  • tensile reinforcement elements which until then had almost exclusively been made of metal, from plastic material, since this is significantly cheaper than stainless steel and also has a poorer thermal conductivity than stainless steel.
  • An example of such a building element for thermal insulation with tensile reinforcement elements made of plastic material is DE-U 20 2012 101 574 to remove.
  • the tensile reinforcement elements referred to in this document as strain relief rods are made of glass fiber reinforced plastic, with two adjacent rods being able to be connected to one another at their ends via a transverse plate in order to achieve a higher and more stable transfer of tensile force.
  • tensile reinforcement elements made of glass fiber or carbon fiber reinforced plastic material can be found in the WO-A 2012/071596 in which a device for connecting reinforced concrete slabs to a wall or ceiling construction made of reinforced concrete has tensile reinforcement elements which consist of closed loops which, due to their loop shape, form a positive connection with the adjacent component and thus ensure the necessary anchoring.
  • Loop-shaped tensile reinforcement elements have been proposed again and again in the prior art; However, due to their short bond length in the adjacent component and their resulting reduced ability to transfer greater tensile forces, they had significant disadvantages, with the loop shape itself regularly causing a collision with the connecting reinforcement and thus causing installation problems, similar to the transverse plates described above.
  • bending pressure shear elements which can be made of UHPFRC quality concrete and which are spatially separated from the loops.
  • the adjoining component which in turn causes installation problems due to the connection reinforcement to be arranged in this area; or you have to try to provide the tensile reinforcement elements made of fiber-reinforced plastic made of pipe or rod material with profiling or ribbing provided on their outside, whereby the anchoring of these ribbed plastic tensile reinforcement elements in the adjacent component suffers from the fact that the fiber-reinforced plastic on the one hand and
  • the concrete material of the adjoining component usually has such significantly different coefficients of thermal expansion that inevitably different temperature-related relative movements occur, which cause stresses or expansions in the mutual contact area. This leads to destruction by shearing off either the ribs or the so-called concrete brackets between the ribs. From this it follows that the tension reinforcement elements can no longer fulfill their function.
  • a further disadvantage of the tensile reinforcement elements made of plastic material is the lack of subsequent bendability in comparison to steel, which makes it necessary for the desired shape and length of the tensile reinforcement elements to be taken into account already during bar production. As a result, the number of tensile reinforcement elements to be kept in stock increases due to a correspondingly higher number Considerable number of variants, which means significant disadvantages in terms of logistics.
  • the EP 2 821 558 A1 shows a component for the heat-insulating connection of two parts of a building, in particular between a building and an outer part, such as a balcony, which protrudes beyond the building, with a plate-shaped insulating body. Loop-shaped pull elements are used in these, which protrude beyond the insulating body on both sides. In addition, pressure bodies and bodies absorbing transverse forces are inserted into the insulating body, which have areas protruding beyond the insulating body and which are spatially separated from the loop-shaped pulling elements.
  • the reinforcement elements are designed as multi-part composite elements, wherein in addition to the central section, they have at least one anchoring section with geometric and/or material properties that at least partially deviate from the central section in a region outside of the insulating body, which is connected to the central section in a connection region spaced apart from the insulating body via a wound form element is connected, and that the former abuts against the central portion.
  • the above-mentioned multi-part composite element with an unusual mix of materials, in that it consists, at least in the area of the insulating body, of a corrosion-resistant and very poorly thermally conductive fiber-reinforced plastic material in the form of a loop-shaped middle section that protrudes from the insulating body and in that it is in an area outside of the insulating body in the adjoining component has an anchoring section which has different materials and/or geometries than the central section and can be adapted to the installation conditions in the adjoining components, as has been proven in the case of conventional metal rebars, which, however, are usually in the area of the insulating body have a center section made of stainless steel.
  • this composite element surpasses the previously known tensile reinforcement elements in every respect, as it makes it possible to select the materials used for the different requirements in the insulating body or in the adjacent components with regard to their individual advantages and to be able to ignore disadvantageous materials or geometries.
  • a middle section made of fiber-reinforced plastic can be used, which is cheaper and has significantly poorer thermal conductivity than the stainless steel used previously, while there are no special requirements in the area of the adjacent concrete components and therefore the inexpensive, easy-to-handle and subsequently bendable reinforcing steel rods, which can also be easily and inexpensively adapted to optimal anchoring in the adjacent concrete components with the appropriate external profile.
  • the anchoring section is connected to the central section via the coil form element and that the coil form element on the central section is at least indirectly applied. It is particularly advantageous in this context that the winding form element rests against the middle section without play and/or in a form-fitting manner and/or over the surface, with a material connection being possible, for example by welding the winding form element to the anchoring section.
  • What is essential is the direct operative connection between the winding form element and the middle section, through which the tensile forces are transmitted directly and without relative movement between the two elements. The larger the contact surface between the winding form element and the middle section, the better the tensile forces can be transmitted, which are then distributed over a larger cross section.
  • the winding form element acts on the loop-shaped central section at least partially in the apex or deflection area of the loop form, namely where the anchoring section would act on the loop-shaped central section if the tensile load were unimpeded.
  • the winding form element can ensure that the anchoring section is connected to the middle section in the appropriate area, namely the apex or deflection area thereof, and reliably transmits the forces that occur.
  • the winding form element consists of a winding form element that is used in any case in the production of the middle section, the required backlash-free and, in particular, flat contact can be ensured in a simple manner.
  • the winding-forming element serves as a deflection element or as a winding core in order—in particular together with a further deflection element or winding core—to produce the desired loop shape. If the winding form element remains on the fibers, the fibers lie flat on the winding form element with the surrounding plastic material of the middle section where the middle section forms an adhesive bond with the wound form element when it is wet wrapped around it, which is sufficient to secure it during transport and as a safeguard against loss, to prevent the middle section from being removed or detached from the wound form element during transport, installation and concreting.
  • the wound form element rests not only until the end of the drying process, but according to the invention also until installation and subsequent concreting as part of the component for thermal insulation on the central section, where it is then separated from the material of the associated component, i.e. in particular from concrete is enclosed.
  • the surface of the winding form element in the area of contact with the middle section is uniform and flat, with the surface plane being adapted to the curved course of the middle section loop in the apex area, i.e. being curved in the same way.
  • the surface plane can thus have the shape of a segment of a cylinder jacket surface, for example.
  • the surface plane can also be bulbous, whereby it corresponds more to the shape of a segment of a torus jacket surface.
  • a winding element primarily means an element that is adapted to the loop-shaped middle section, particularly with regard to the shape in the connection and contact area, in order to ensure particularly good and reliable power transmission without compromising the other advantages of the composite element, such as the modular structure made of different materials and shapes could not offer.
  • a wound form element within the meaning of the invention is also such an element which, regardless of its shape, is used for the force-transmitting connection of an anchoring section to the middle section, the very different embodiments described here and illustrated in the drawings are possible for the anchoring section.
  • a particularly advantageous operative connection results when the coil form element arranged between the anchoring section and the middle section bears flat not only on the middle section but also on the anchoring section.
  • the shaped winding element In addition to the described planar contact area for the middle section, various geometries are conceivable for the shaped winding element, which are primarily based on the additional tasks: If the shaped winding element is also acted upon by the anchoring element over a wide area, the shaped winding element should be adapted to the surface shape of the anchoring element in the contact area. Since the middle section and the anchoring element engage with one another with the interposition of the former, the contact area for the anchoring element is arranged on the opposite side of the contact area for the middle section in the case of the former.
  • the contact area should also be designed evenly and evenly and be curved.
  • the surface plane then has the shape of a segment of a torus envelope surface. If, on the other hand, the anchoring element is bent in a U-shape, but consists of a reinforcing bar with a rectangular cross section, then the surface plane has the shape of a segment of a cylindrical jacket surface.
  • the anchoring sections are preferably made of steel, in particular reinforcing steel, they can be anchored in the adjoining components in a conventional manner without - as in the case of fiber-reinforced plastic rods - by exotic forming (in the form of the mentioned transverse plates, loops, etc.) and Installation problems with the connection reinforcement caused by this would have to be paid for or, when using profiled plastic rods, due to damage in the mutual contact area, which the different coefficients of thermal expansion of concrete on the one hand and plastic rod on the other.
  • the structural element according to the invention with the tension reinforcement elements designed as a composite element, in that the tension reinforcement elements consist of the loop-shaped central section protruding only slightly in relation to the insulating body and the anchoring section connected thereto. Only the anchoring section overlaps the connection reinforcement, which can then be designed in such a way that on the one hand installation problems such as collisions with the connection reinforcement are avoided and on the other hand the anchoring in the adjacent component is optimized.
  • the anchoring is usually carried out by ribbing the outer surface of the reinforcing bars, and this ribbing can be easily introduced during the manufacturing process of these reinforcing elements.
  • the anchoring section of the tensile or shear force reinforcement elements consists of a rod-shaped anchoring element bent in particular in a U-shape, that the anchoring element is hooked into the loop shape of the middle section and that the coiled-form element at least partially fixes the U-shaped bent rod-shaped anchoring element in its U-apex area applied, that is in the area of the U-shaped bend.
  • each reinforcement element has a central section with two sections running parallel to one another, which can also be used for force transmission.
  • the middle section has two loop subsections which extend in the horizontal direction (or in the case of the shear force reinforcement element essentially inclined to the horizontal) essentially parallel to one another, preferably next to one another and/or one above the other and are connected to one another via the apex region, each of which absorbs part of the force to be transmitted .
  • the power transmission can be increased compared to a conventional reinforcing bar - and with the same cross-section of the reinforcing bar on the one hand and the individual loop section on the other even double.
  • a loop consists of about 50 fiber wraps.
  • each loop section has these 50 filament wraps, a total of 100 filament sections extend between the two adjacent members, which of course means that such a tensile reinforcing element can correspondingly transmit twice as many forces as a single 50-filament tensile reinforcing bar.
  • the loop shape of the middle sections can not only be used advantageously for connection to U-shaped anchoring elements, but also for fixing an end anchoring element that protrudes laterally relative to the middle section, i.e. transversely to the longitudinal extent of the middle section, and which can also function as an anchoring section.
  • This end anchoring element is in particular connected in one piece to the winding form element and essentially serves to enlarge the surface of the central section in the apex area by means of laterally protruding sub-areas and also to enable anchoring of the tension or shear force reinforcement element in the associated component without additional rod-shaped reinforcement elements, as is shown by the Anchoring plates of the prior art is known per se. It is important here that this end anchoring element forms a structure which, due to its geometry, absorbs occurring tensile loads in a form-fitting manner and is supported in the concrete of the adjacent component.
  • the end anchoring element expediently has a cross section oriented parallel to the insulating body, which is larger than the cross section of the middle section and forms laterally protruding end anchoring sections in order to anchor the tensile or shear force reinforcement element, as in the known anchoring plates in the component by, on the one hand, increasing the surface area of the reinforcement element and thus the force transmission area and, on the other hand, by forming partial areas of the reinforcement element which the component engages behind and form a form fit with.
  • the laterally protruding outer shape of the end anchoring sections can increase with increasing distance from the insulating body compared to the central section and can be designed like a fir tree, for example.
  • the anchoring of the tension rods or tension reinforcement elements in the associated concrete component can be improved and their binding length can thus be significantly reduced.
  • the end anchoring elements can consist of glass fiber reinforced plastic material.
  • the end anchoring elements it is also possible to produce them from concrete, in which case concrete should be understood to mean any form of a hardening and/or setting building material, in particular a cementitious, fiber-reinforced building material such as concrete, such as high-strength or ultra-high-strength concrete or such as high-strength or ultra-high-strength mortar, a synthetic resin mixture or a reaction resin mixture.
  • the anchoring section of the reinforcement elements is expediently fixed at a free end of the associated central section. If, in this case, the anchoring section of the reinforcement elements is arranged in alignment with this central section, which extends essentially horizontally when the component is installed, this results in the different parts of the reinforcement elements being arranged one behind the other or in series, with each part being arranged where it is most favorable has material properties.
  • the anchoring section consists of reinforcing steel, which has a thermal expansion coefficient, i.e. thermal expansion, in the order of magnitude of the thermal expansion coefficient or thermal expansion of concrete and thus non-destructively corresponding temperature-related Deformations or expansions of the concrete can follow.
  • the middle section of the tensile or transverse force reinforcement element consists of fiber-reinforced and in particular glass-fiber-reinforced plastic material, which on the one hand can be sufficiently loaded in the direction of tensile force is and on the other hand has a poor thermal conductivity, which is desirable in the area of the insulating body.
  • the wording "fibre-reinforced plastic material” also includes fiber reinforcements, in particular glass fiber reinforcements, whose fiber content, in particular glass fiber content, is higher than 85% by weight, so that the weight of the matrix material used in addition to the fibers, such as synthetic resin, is less than 15% compared to the weight of this reinforcement element.
  • the anchoring sections Since the reinforcing steel of the terminal anchoring sections must have a minimum concrete cover for reasons of corrosion protection, the anchoring sections must not extend as far as the insulating body in order to avoid corrosion of the anchoring sections. For this reason, it is expediently provided that the connection area, when installed, has a horizontal distance from the insulating body which is at least once and at most five times as great as the diameter d M of the middle section. As a result, the anchoring section can be fixed to the middle section outside of the insulating body in an area that is protected from corrosion by the required minimum concrete covering.
  • the middle section is expediently designed with essentially smooth walls on its radial outside, at least in the area between the insulating body and the connecting area. This avoids an excessive bond between the central section and the material of the adjacent component surrounding the central section, and forms a buffer zone which ensures that the flexural rigidity of the reinforcement elements does not change abruptly when leaving the insulating body and entering the adjacent component, but only gradually changes.
  • the essentially smooth-walled central section thus serves to prevent the reinforcement element from being anchored near the joint in the adjoining component, so that anchoring takes place only in the connection area and in the area of the reinforcement element following in the axial direction, namely the anchoring section.
  • the component for thermal insulation according to the invention expediently has pressure elements and/or transverse force elements in addition to the tensile reinforcement elements for the transmission of compressive force and/or shear force between the adjacent components - as is also known from the relevant prior art and as is usual with such structural elements for thermal insulation .
  • the material of the adjoining components i.e. in particular the building and the projecting outer part of concrete
  • this should be understood to mean any form of a hardening and/or setting building material, in particular a cementitious, fiber-reinforced building material such as concrete, such as high-strength or ultra high performance concrete or such as high performance or ultra high performance mortar, a synthetic resin mix or a reaction resin mix.
  • the Figures 1, 2 and 3 show a side view, perspective side view and top view of a component for thermal insulation 1 with a cuboid insulating body 2, which is intended to be arranged in a component joint left between two concrete components, namely a balcony A and a building ceiling B, and these two concrete components A, B spaced apart from each other in a thermally insulated manner.
  • the insulating body 2 is composed of several parts (not shown) in order to allow the installation of reinforcement elements in the form of tension rods 3 , in the form of transverse force rods 4 and in the form of pressure elements 5 .
  • the reinforcement elements are arranged in the manner known and customary in the prior art, namely by arranging the tensile reinforcement elements 3 in the upper region of the insulating body 2, which extend in the horizontal direction when installed and for the transmission of tensile forces between the two to the component serve for thermal insulation connected components A, B and are anchored in these components for this purpose.
  • the pressure elements 5 are arranged, also with a substantially horizontal direction of extension, although in the exemplary embodiment shown they do not essentially protrude in relation to the insulating body 2.
  • shear force rods 4 are to be used in the usual manner, which run inclined to the horizontal in the area of the insulating body 2 and from the reinforcement elements The loads to be absorbed by the component for thermal insulation run diagonally downwards from the tension zone on one side of the insulating body into the compression zone on the other side of the insulating body, where it bends vertically upwards in the direction of the tensile zones and then, after a further bend, parallel to the tensile reinforcement elements to get lost.
  • the tensile reinforcement elements 3 which are constructed as a multi-part composite element and have a loop-shaped central section 3a made of fiber-reinforced plastic and an anchoring section 3b in the form of a U-shaped rod material at one end and an anchoring section at the other end have an end anchoring element 3c.
  • the middle section 3a extends horizontally in the area of the insulating body 2 and protrudes somewhat horizontally on both sides of the insulating body 2 and is arranged with this protruding area in the area of the adjoining components A, B in the installed state.
  • Central section 3a and anchoring section 3b each overlap in a connection area 3h with the interposition of a winding form element 3i.
  • This winding former serves to allow the fibers to change direction when the loop-shaped central portion 3a made of fiber reinforced plastic is formed, and to form a crest portion 3k by constituting the shape around which the wet fibers are wound. If two such winding form elements 3i are used, the overall loop shape can be obtained, consisting of two loop sections 3g which extend essentially parallel to one another and are connected to one another at their ends via a respective apex region 3k.
  • winding form element Since the winding form element remains in the apex areas after the production and drying of the loop-shaped middle section, it also lies flat against the associated apex area of the middle section when installed and ensures play-free transmission of tensile forces between anchoring section 3b and middle section 3a.
  • connection area 3h in which the middle section 3a and the anchoring section 3b consisting of rod material bent into a U-shape overlap, but also in the opposite connection area 3h, where middle section 3a and overlap an end anchoring element 3c acting as an anchoring section.
  • the end anchoring member 3c As for the end anchoring member 3c, it has an inner portion functioning as a coil-forming member 3i while having laterally protruding end anchoring portions 3m. As a result, the anchoring of the tension rods or tension reinforcement elements 3 in the associated concrete component and thus their binding length can be significantly reduced.
  • the anchoring element 3b consisting of rod material bent in a U-shape is arranged oriented in the horizontal direction, just like the middle section 3a, but with the apex axis of the apex region 3k offset by 90° on the one hand and the U-base of the rod material bent in a U-shape on the other hand.
  • both elements can be plugged into one another in a crossed, aligned manner with one another.
  • the middle section 3a with its plastic material extends somewhat beyond the insulating body and thus enables the anchoring section 3b made of reinforcing steel to be connected to this middle section 3a in an area which is not yet at risk of corrosion.
  • Significant advantages can be achieved in this way: In the area of the insulating body, the particularly advantageous plastic material of the central section can be used, which is characterized above all by lower costs and particularly poor thermal conductivity compared to high-grade steel.
  • the anchoring sections can finally consist of reinforcing steel in the area of the components, which has similar thermal expansion coefficients to the component concrete surrounding it and can therefore form an optimal connection with the concrete, through which the tensile force from the concrete into the tensile reinforcement element and the opposite can be transferred without causing the destruction that would otherwise occur due to excessive relative movements.
  • the end anchoring element 3c′ also has a winding form element 3i in its inner or central region acted upon by the loop-shaped central section 3a.
  • the Figures 10, 11 and 12 finally show an alternative component 31 for thermal insulation, in which the same objects and components as in the drawings mentioned before with the same reference numerals as in particular in the Figures 1 to 3 are listed.
  • the only difference between the component 31 and the component 1 from the Figures 1 to 3 consists in the fact that not only the tensile reinforcement elements 3 are designed as a composite element, but also a transverse force element 14. This consists of a central section 14a made of a loop-shaped, fiber-reinforced plastic element and an anchor portion in the form of an end anchor member 14c.
  • the transverse force element middle section 14a like the tension reinforcement element middle section 3a, is wound from endless fibers with the aid of a winding form element 14i, which serves to enable the fibers to change direction when the loop-shaped middle section 14a is produced and to form a crest region 14k by representing the shape around which the wet fibers are wrapped. If two such winding form elements 14i are used, the overall loop shape can be obtained, consisting of two loop sections 14g which extend essentially parallel to one another and are connected to one another at their ends via a respective apex region 14k.
  • the present invention offers the advantage of providing a component for thermal insulation that has tensile and/or shear force reinforcement elements in the form of multi-part composite elements, which consist of a central section made of loop-shaped, fiber-reinforced plastic material on the one hand and at least one additional anchoring section.
  • multi-part composite elements consist of a central section made of loop-shaped, fiber-reinforced plastic material on the one hand and at least one additional anchoring section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Description

Die vorliegende Erfindung betrifft ein Bauelement zur Wärmedämmung nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to a thermal insulation component according to the preamble of patent claim 1.

Im Stand der Technik sind verschiedene Ausführungsformen von Bauelementen zur Wärmedämmung bekannt, die vor allem dazu dienen, gegenüber Gebäuden vorkragende Gebäudeteile wie beispielsweise Balkonplatten durch eine wärmegedämmte Bauteilfuge hindurch aufzulagern. Dabei sorgen die integrierten Bewehrungselemente für die notwendige Kraft- bzw. Momentübertragung, während der Isolierkörper dafür verantwortlich ist, die beiden Bauteile unter Belassung einer Fuge wärmegedämmt voneinander zu beanstanden.Various embodiments of components for thermal insulation are known in the prior art, which are primarily used to support building parts that protrude from buildings, such as balcony slabs, through a thermally insulated component joint. The integrated reinforcement elements ensure the necessary force and torque transmission, while the insulating body is responsible for thermally insulating the two components while leaving a joint.

In der Regel werden im einschlägigen Stand der Technik Zugbewehrungselemente vorgesehen, die meist aus einem Stabmaterial aus Metall hergestellt sind, welches insbesondere im Bereich des Isolierkörpers aus Edelstahl besteht und im Bereich außerhalb des Isolierkörpers aus Betonstahl. Edelstahl wird im Bereich des Isolierkörpers bzw. der Bauteilfuge zum einen wegen seiner Korrosionsfestigkeit und zum anderen wegen seiner schlechten Wärmeleitfähigkeit verwendet und ist somit im Bereich des Isolierkörpers dem Betonstahlmaterial vorzuziehen. Das Betonstahlmaterial hingegen wird meist im Bereich außerhalb des Isolierkörpers verwendet, wo es weder auf die Korrosionsfestigkeit noch auf die Wärmedämmeigenschaften ankommt, da sich der Betonstahl vollständig im Bereich eines der beiden Bauteile erstreckt.As a rule, tensile reinforcement elements are provided in the relevant state of the art, which are usually made of a rod material made of metal, which consists of stainless steel in particular in the area of the insulating body and of reinforcing steel in the area outside the insulating body. Stainless steel is used in the area of the insulator or the component joint on the one hand because of its corrosion resistance and on the other hand because of its poor thermal conductivity and is therefore preferable to reinforcing steel material in the area of the insulator. The reinforcing steel material, on the other hand, is mostly used in the area outside of the insulating body, where neither corrosion resistance nor thermal insulation properties are important, since the reinforcing steel extends completely in the area of one of the two components.

In jüngerer Zeit wurden Anstrengungen unternommen, die Bauelemente zur Wärmedämmung weiter zu optimieren, wobei man versuchte, die bis dahin fast ausschließlich aus Metall bestehenden Zugbewehrungselemente aus Kunststoffmaterial herzustellen, da dieses deutlich kostengünstiger als Edelstahl ist und außerdem eine gegenüber Edelstahl noch schlechtere Wärmeleitfähigkeit aufweist. Ein Beispiel für ein solches Bauelement zur Wärmedämmung mit Zugbewehrungselementen aus Kunststoffmaterial ist der DE-U 20 2012 101 574 zu entnehmen. Die in dieser Schrift als Zugentlastungsstangen bezeichneten Zugbewehrungselemente bestehen aus glasfaserverstärktem Kunststoff, wobei zwei zueinander benachbarte Stangen jeweils über eine Querplatte an ihren Enden miteinander verbunden sein kann, um eine höhere und stabilere Zugkraftübernahme zu erzielen. Dieser umständlichen und Einbauprobleme beim Anschluss der Bauteilbewehrung hervorrufenden Verankerungsart zweier Zugentlastungsstangen mittels einer Querplatte kann man unschwer entnehmen, dass Zugbewehrungselemente aus Kunststoff vor allem dann schlecht in den angrenzenden Bauteilen zu verankern sind, wenn sie wie im geschilderten Stand der Technik glattwandig ausgeführt sind und deshalb eine Endverankerung in Form einer Querplatte benötigen.Efforts have recently been made to further optimize the components for thermal insulation, with attempts being made to produce the tensile reinforcement elements, which until then had almost exclusively been made of metal, from plastic material, since this is significantly cheaper than stainless steel and also has a poorer thermal conductivity than stainless steel. An example of such a building element for thermal insulation with tensile reinforcement elements made of plastic material is DE-U 20 2012 101 574 to remove. The tensile reinforcement elements referred to in this document as strain relief rods are made of glass fiber reinforced plastic, with two adjacent rods being able to be connected to one another at their ends via a transverse plate in order to achieve a higher and more stable transfer of tensile force. This cumbersome method of anchoring two strain relief rods by means of a transverse plate, which causes installation problems when connecting the component reinforcement, can easily be seen to mean that tensile reinforcement elements made of plastic are difficult to anchor in the adjacent components, especially if they are smooth-walled, as in the state of the art described, and therefore have a need end anchorage in the form of a transverse plate.

Eine alternative Lösung zur Verwendung von Zugbewehrungselementen aus Glasfaser- oder Carbonfaser-verstärktem Kunststoffmaterial kann man der WO-A 2012/071596 entnehmen, bei der eine Einrichtung zum Anschließen von Stahlbetonplatten an eine Wand- oder Deckenkonstruktion aus Stahlbeton Zugbewehrungselemente aufweist, die aus geschlossenen Schlaufen bestehen, die aufgrund ihrer Schlaufenform eine formschlüssige Verbindung mit dem angrenzenden Bauteil eingehen und so für die erforderliche Verankerung sorgen. Schlaufenförmige Zugbewehrungselemente wurden im Stand der Technik zwar immer wieder vorgeschlagen; sie wiesen jedoch wegen ihrer geringen Einbindelänge in das angrenzende Bauteil und ihrer daraus resultierenden geringeren Fähigkeit, größere Zugkräfte zu übertragen, wesentliche Nachteile auf, wobei die Schlaufenform selbst regelmäßig für eine Kollision mit der Anschlussbewehrung und somit ähnlich wie die zuvor beschriebenen Querplatten für Einbauprobleme sorgte.An alternative solution to the use of tensile reinforcement elements made of glass fiber or carbon fiber reinforced plastic material can be found in the WO-A 2012/071596 in which a device for connecting reinforced concrete slabs to a wall or ceiling construction made of reinforced concrete has tensile reinforcement elements which consist of closed loops which, due to their loop shape, form a positive connection with the adjacent component and thus ensure the necessary anchoring. Loop-shaped tensile reinforcement elements have been proposed again and again in the prior art; However, due to their short bond length in the adjacent component and their resulting reduced ability to transfer greater tensile forces, they had significant disadvantages, with the loop shape itself regularly causing a collision with the connecting reinforcement and thus causing installation problems, similar to the transverse plates described above.

Die in der WO-A 2012/071596 offenbarte Einrichtung versucht, diese Nachteile dadurch zu reduzieren, dass die Enden der geschlossenen Schlaufen mit U-förmigen Bügeln der Anschlussbewehrung in Eingriff stehen und so die Anschlussbewehrung einen Teil der Aufgabe der Zugbewehrung übernehmen soll. Es ist jedoch offensichtlich, dass in solches Ineinanderverhaken der geschlossenen Schlaufe mit der U-förmigen Anschlussbewehrung dazu führt, dass die beschriebene Einbauproblematik sogar noch erheblich vergrößert wird. Denn die Zugbewehrungsschlaufen müssen ja auf beiden Seiten mit ihren jeweiligen Enden um die U-förmige Anschlussbewehrung herumlaufen, was voraussetzt, dass die Einrichtung mit den Zugbewehrungsschlaufen auf der Baustelle zuerst eingebaut wird, nachfolgend die mehrere Meter langen U-förmigen Anschlussbewehrungsstäbe in die Zugbewehrungsschlaufe eingefädelt und anschließend an der restlichen Bauteilbewehrung festgelegt werden.The one in the WO-A 2012/071596 The device disclosed tries to reduce these disadvantages in that the ends of the closed loops engage with U-shaped brackets of the connecting reinforcement and the connecting reinforcement is intended to take over part of the task of the tensile reinforcement. However, it is obvious that such an interlocking of the closed loop with the U-shaped connection reinforcement means that the described installation problems are even increased considerably. Because the tensile reinforcement loops must be on both sides with their respective ends run around the U-shaped connection reinforcement, which requires that the device with the tension reinforcement loops is first installed on the construction site, then the U-shaped connection reinforcement bars, which are several meters long, are threaded into the tension reinforcement loop and then fixed to the remaining component reinforcement.

Darüber hinaus weist der Gegenstand gemäß WO-A 2012/071596 zusätzlich zu den Schlaufen noch Biegedruck-Schub-Elemente auf, die aus Beton der Qualität UHPFRC bestehen können und die von den Schlaufen räumlich getrennt sind.In addition, the subject according to WO-A 2012/071596 in addition to the loops, there are also bending pressure shear elements, which can be made of UHPFRC quality concrete and which are spatially separated from the loops.

Folglich konnten sich die Bauelemente zur Wärmedämmung mit Zugbewehrungselementen aus Kunststoffmaterial bisher nicht durchsetzen, da ihre Verankerung in den angrenzenden Bauteilen zu bisher nicht gelösten Problemen führte: Denn entweder müssen die Zugbewehrungselemente durch besondere Geometrien (z.B. durch Schlaufenform, Querplatten und dergleichen) einen belastbaren Formschluss mit dem angrenzenden Bauteil eingehen, was wiederum für Einbauprobleme aufgrund der in diesem Bereich anzuordnenden Anschlussbewehrung sorgt; oder aber man muss versuchen, die aus faserverstärktem Kunststoff bestehenden Zugbewehrungselemente aus Rohr- bzw. Stabmaterial mit an ihrer Außenseite vorgesehener Profilierung bzw. Rippung vorzusehen, wobei jedoch die Verankerung dieser gerippten Kunststoff-Zugbewehrungselemente im angrenzenden Bauteil darunter leidet, dass der faserverstärkte Kunststoff einerseits und das Betonmaterial des angrenzenden Bauteils andererseits in der Regel so deutlich unterschiedliche Temperaturdehnzahlen aufweisen, dass zwangsläufig unterschiedliche temperaturbedingte Relativbewegungen entstehen, die Spannungen bzw. Dehnungen im gegenseitigen Anlagebereich hervorrufen. Dies führt zu Zerstörungen, indem entweder die Rippen oder die sogenannten Betonkonsolen zwischen den Rippen abscheren. Hieraus folgt, dass die Zugbewehrungselemente meist ihre Funktion nicht mehr erfüllen können.As a result, the building elements for thermal insulation with tension reinforcement elements made of plastic material have not been able to establish themselves so far, since their anchoring in the adjacent components led to problems that have not yet been solved: Either the tension reinforcement elements have to have a resilient form fit with special geometries (e.g. loop shape, transverse plates and the like). the adjoining component, which in turn causes installation problems due to the connection reinforcement to be arranged in this area; or you have to try to provide the tensile reinforcement elements made of fiber-reinforced plastic made of pipe or rod material with profiling or ribbing provided on their outside, whereby the anchoring of these ribbed plastic tensile reinforcement elements in the adjacent component suffers from the fact that the fiber-reinforced plastic on the one hand and On the other hand, the concrete material of the adjoining component usually has such significantly different coefficients of thermal expansion that inevitably different temperature-related relative movements occur, which cause stresses or expansions in the mutual contact area. This leads to destruction by shearing off either the ribs or the so-called concrete brackets between the ribs. From this it follows that the tension reinforcement elements can no longer fulfill their function.

Ein weiterer Nachteil der Zugbewehrungselemente aus Kunststoffmaterial ist die im Vergleich zu Stahl fehlende nachträgliche Biegbarkeit, die es erforderlich macht, dass die gewünschte Form und Länge der Zugbewehrungselemente bereits bei der Stabherstellung berücksichtigt wird. Hierdurch steigt die Anzahl der auf Lager zu haltenden Zugbewehrungselemente aufgrund entsprechend hoher Variantenzahl beträchtlich, was erhebliche Nachteile in logistischer Hinsicht bedeutet.A further disadvantage of the tensile reinforcement elements made of plastic material is the lack of subsequent bendability in comparison to steel, which makes it necessary for the desired shape and length of the tensile reinforcement elements to be taken into account already during bar production. As a result, the number of tensile reinforcement elements to be kept in stock increases due to a correspondingly higher number Considerable number of variants, which means significant disadvantages in terms of logistics.

Die EP 2 821 558 A1 zeigt ein Bauteil zur wärmedämmenden Verbindung von zwei Gebäudeteilen, insbesondere zwischen einem Gebäude und einem über das Gebäude hinausragenden Außenteil, beispielsweise Balkon, mit einem plattenförmigen Isolationskörper. In diesen eingesetzt sind schlaufenförmige Zugelemente, die beidseitig über den Isolationskörper vorstehend sind. In den Isolationskörper sind zudem Druckkörper und Querkräfte aufnehmende Körper eingesetzt, die über den Isolationskörper vorstehende Bereiche aufweisen und die von den schlaufenförmigen Zugelementen räumlich getrennt sind.The EP 2 821 558 A1 shows a component for the heat-insulating connection of two parts of a building, in particular between a building and an outer part, such as a balcony, which protrudes beyond the building, with a plate-shaped insulating body. Loop-shaped pull elements are used in these, which protrude beyond the insulating body on both sides. In addition, pressure bodies and bodies absorbing transverse forces are inserted into the insulating body, which have areas protruding beyond the insulating body and which are spatially separated from the loop-shaped pulling elements.

Von diesem Stand der Technik ausgehend ist es die Aufgabe der vorliegenden Erfindung, ein Bauelement zur Wärmedämmung mit den Merkmalen des Oberbegriffs von Patentanspruch 1 dadurch weiterzubilden, dass es die beschriebenen Nachteile von Bewehrungselementen aus Kunststoffmaterial vermeidet und insbesondere eine verbesserte Verankerung der Bewehrungselemente in den angrenzenden Betonbauteilen ermöglicht.Proceeding from this state of the art, it is the object of the present invention to further develop a component for thermal insulation with the features of the preamble of patent claim 1 in that it avoids the described disadvantages of reinforcement elements made of plastic material and in particular an improved anchoring of the reinforcement elements in the adjacent concrete components allows.

Diese Aufgabe wird erfindungsgemäß gelöst durch ein Bauelement der Wärmedämmung mit den Merkmalen des Patentanspruchs 1.This object is achieved according to the invention by a thermal insulation component with the features of patent claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind jeweils Gegenstand der Unteransprüche, deren Wortlaut hiermit durch ausdrückliche Bezugnahme in die Beschreibung aufgenommen wird, um unnötige Textwiederholungen zu vermeiden.Advantageous developments of the invention are the subject matter of the dependent claims, the wording of which is hereby incorporated into the description by express reference in order to avoid unnecessary text repetitions.

Erfindungsgemäß sind die Bewehrungselemente als mehrteilige Kompositelemente ausgebildet, wobei sie zusätzlich zu dem Mittelabschnitt in einem Bereich außerhalb des Isolierkörpers zumindest einen Verankerungsabschnitt mit zumindest teilweise vom Mittelabschnitt abweichenden geometrischen und/oder Materialeigenschaften aufweisen, der in einem vom Isolierkörper beabstandeten Anschlussbereich über ein Wickelformelement an den Mittelabschnitt angeschlossen ist, und dass das Wickelformelement an dem Mittelabschnitt anliegt.According to the invention, the reinforcement elements are designed as multi-part composite elements, wherein in addition to the central section, they have at least one anchoring section with geometric and/or material properties that at least partially deviate from the central section in a region outside of the insulating body, which is connected to the central section in a connection region spaced apart from the insulating body via a wound form element is connected, and that the former abuts against the central portion.

Dieser Materialkombination liegt die Erkenntnis zugrunde, dass man auf die besonderen Vorteile des Kunststoffmaterials im Bereich des Isolierkörpers nicht verzichten muss, nur weil man im Bereich des angrenzenden Bauteils das Kunststoffmaterial wegen der Verankerungsproblematik ggf. lieber durch andere Materialien bzw. Geometrien, insbesondere gerippten Stahl ersetzen möchte. Das Ergebnis ist somit das genannte mehrteilige Kompositelement mit einem ungewöhnlichen Materialmix, indem es zumindest im Bereich des Isolierkörpers aus einem korrosionsbeständigen und sehr schlecht wärmeleitenden faserverstärkten Kunststoffmaterial in Form eines gegenüber dem Isolierkörper vorstehenden schlaufenförmig ausgebildeten Mittelabschnitts besteht und indem es in einem Bereich außerhalb des Isolierkörpers im angrenzenden Bauteil einen Verankerungsabschnitt aufweist, der andere Materialien und/oder Geometrien als der Mittelabschnitt aufweist und so an die Einbauverhältnisse in den angrenzenden Bauteilen angepasst werden kann, wie sich dies im Fall der herkömmlichen Metall-Bewehrungsstäbe bewährt hat, welche jedoch üblicherweise im Bereich des Isolierkörpers einen Mittelabschnitt aus Edelstahl aufweisen.This combination of materials is based on the knowledge that one does not have to do without the special advantages of the plastic material in the area of the insulating body just because the plastic material in the area of the adjacent component may be replaced by other materials or geometries, in particular ribbed steel, due to the anchoring problem would like. The result is the above-mentioned multi-part composite element with an unusual mix of materials, in that it consists, at least in the area of the insulating body, of a corrosion-resistant and very poorly thermally conductive fiber-reinforced plastic material in the form of a loop-shaped middle section that protrudes from the insulating body and in that it is in an area outside of the insulating body in the adjoining component has an anchoring section which has different materials and/or geometries than the central section and can be adapted to the installation conditions in the adjoining components, as has been proven in the case of conventional metal rebars, which, however, are usually in the area of the insulating body have a center section made of stainless steel.

Dieses Kompositelement übertrifft überraschenderweise die bisher bekannten Zugbewehrungselemente in jeglicher Hinsicht, ermöglicht es doch, für die unterschiedlichen Anforderungen im Isolierkörper bzw. in den angrenzenden Bauteilen die verwendeten Materialien hinsichtlich ihrer individuellen Vorteile auszuwählen und nachteilige Materialien bzw. Geometrien unberücksichtigt lassen zu können. So kann man im Bereich des Isolierkörpers einen Mittelabschnitt aus faserverstärktem Kunststoff verwenden, der kostengünstiger und deutlich schlechter wärmeleitend ist als der bisher dort verwendete Edelstahl, während man im Bereich der angrenzenden Betonbauteile keinen besonderen Anforderungen unterworfen ist und deshalb mit den kostengünstigen, leicht handhabbaren und nachträglich biegbaren Betonstahl-Stäben arbeiten kann, die mit entsprechender Außenprofilierung auch einfach und kostengünstig an eine optimale Verankerung in den angrenzenden Betonbauteilen angepasst werden können.Surprisingly, this composite element surpasses the previously known tensile reinforcement elements in every respect, as it makes it possible to select the materials used for the different requirements in the insulating body or in the adjacent components with regard to their individual advantages and to be able to ignore disadvantageous materials or geometries. In the area of the insulating body, for example, a middle section made of fiber-reinforced plastic can be used, which is cheaper and has significantly poorer thermal conductivity than the stainless steel used previously, while there are no special requirements in the area of the adjacent concrete components and therefore the inexpensive, easy-to-handle and subsequently bendable reinforcing steel rods, which can also be easily and inexpensively adapted to optimal anchoring in the adjacent concrete components with the appropriate external profile.

Dabei kann man das erfinderische Konzept sowohl für Zugbewehrungselemente als auch für Querkraftbewehrungselemente verwenden, welche ja im Wesentlichen so etwas wie schräg in den Isolierkörper eingebaute Zugstäbe sind, ansonsten aber überwiegende auf Zug beansprucht werden, so dass man die bei Zugbewehrungselementen erworbenen Erkenntnisse auch auf Querkraftbewehrungselemente übertragen kann.You can use the inventive concept for Zugbewehrungselemente as well as for shear force reinforcement elements, which are essentially something like obliquely built-in tie rods in the insulator, but otherwise are predominantly claimed to train, so that the at Tension reinforcement elements can also be transferred to shear reinforcement elements.

Damit das Zug- oder Querkraftbewehrungselement trotz Gestaltung als mehrteiliges Kompositelement die Zugkräfte sicher über die einzelnen Bestandteile des Kompositelements übertragen kann, ist es erfindungswesentlich und besonders wichtig, dass der Anschluss des Verankerungsabschnitts an den Mittelabschnitt über das Wickelformelement erfolgt und dass das Wickelformelement an dem Mittelabschnitt zumindest mittelbar anliegt. Besonders vorteilhaft ist es in diesem Zusammenhang, dass das Wickelformelement an dem Mittelabschnitt spielfrei und/oder in formschlüssiger Weise und/oder flächig anliegt, wobei auch eine stoffschlüssige Verbindung beispielsweise durch ein Anschweißen des Wickelformelements an den Verankerungsabschnitt in Frage kommen kann. Wesentlich ist die unmittelbare Wirkverbindung von Wickelformelement und Mittelabschnitt, durch die die Zugkräfte unmittelbar und ohne Relativbewegung zwischen beiden Elementen übertragen werden. Je größer dabei die Anlagefläche zwischen Wickelformelement und Mittelabschnitt ist, umso besser lassen sich die Zugkräfte übertragen, die sich dann auf einen größeren Querschnitt verteilen.In order for the tensile or shear force reinforcement element to be able to safely transfer the tensile forces via the individual components of the composite element, despite being designed as a multi-part composite element, it is essential to the invention and particularly important that the anchoring section is connected to the central section via the coil form element and that the coil form element on the central section is at least indirectly applied. It is particularly advantageous in this context that the winding form element rests against the middle section without play and/or in a form-fitting manner and/or over the surface, with a material connection being possible, for example by welding the winding form element to the anchoring section. What is essential is the direct operative connection between the winding form element and the middle section, through which the tensile forces are transmitted directly and without relative movement between the two elements. The larger the contact surface between the winding form element and the middle section, the better the tensile forces can be transmitted, which are then distributed over a larger cross section.

In diesem Zusammenhang ist es vorteilhaft, wenn das Wickelformelement den schlaufenförmigen Mittelabschnitt zumindest teilweise im Scheitel- bzw. Umlenkbereich der Schlaufenform beaufschlagt, nämlich dort, wo der Verankerungsabschnitt am schlaufenförmigen Mittelabschnitt bei ungehinderter Zugbelastung angreifen würde. Denn dabei kann das Wickelformelement dafür sorgen, dass der Verankerungsabschnitt im passenden Bereich, nämlich dem Scheitel- bzw. Umlenkbereich des Mittelabschnittes an diesen angeschlossen wird und die auftretenden Kräfte sicher überträgt. Wenn das Wickelformelement aus einem bei der Herstellung des Mittelabschnitts ohnehin verwendeten Wickelformelement besteht, lässt sich in einfacher Weise die geforderte spielfreie und insbesondere flächige Anlage sicherstellen. Denn beim Wickeln der Fasern im nassem Zustand dient das Wickelformelement als ein Umlenkelement bzw. als Wickelkern, um - insbesondere zusammen mit einem weiteren Umlenkelement bzw. Wickelkern - die gewünschte Schlaufenform herzustellen. Verbleibt das Wickelformelement an den Fasern, so liegen die Fasern mit dem sie umgebenden Kunststoffmaterial des Mittelabschnitts flächig an dem Wickelformelement an, wobei der Mittelabschnitt beim nassen Umwickeln des Wickelformelements einen Haftverbund mit dem Wickelformelement eingeht, was zur Transportsicherung und als Verliersicherung ausreicht, um bei Transport, Einbau und Betonieren ein Entfernen bzw. Lösen des Mittelabschnitts von dem Wickelformelement zu verhindern.In this context, it is advantageous if the winding form element acts on the loop-shaped central section at least partially in the apex or deflection area of the loop form, namely where the anchoring section would act on the loop-shaped central section if the tensile load were unimpeded. This is because the winding form element can ensure that the anchoring section is connected to the middle section in the appropriate area, namely the apex or deflection area thereof, and reliably transmits the forces that occur. If the winding form element consists of a winding form element that is used in any case in the production of the middle section, the required backlash-free and, in particular, flat contact can be ensured in a simple manner. This is because when the fibers are wound in the wet state, the winding-forming element serves as a deflection element or as a winding core in order—in particular together with a further deflection element or winding core—to produce the desired loop shape. If the winding form element remains on the fibers, the fibers lie flat on the winding form element with the surrounding plastic material of the middle section where the middle section forms an adhesive bond with the wound form element when it is wet wrapped around it, which is sufficient to secure it during transport and as a safeguard against loss, to prevent the middle section from being removed or detached from the wound form element during transport, installation and concreting.

In diesem Zusammenhang ist es besonders vorteilhaft, wenn das Wickelformelement nicht nur bis zum Ende des Trocknungsvorgangs, sondern erfindungsgemäß auch bis zum Einbau und anschließenden Betonieren als Teil des Bauelements zur Wärmedämmung am Mittelabschnitt anliegt, wo es anschließend vom Material des zugehörigen Bauteils, also insbesondere vom Beton umschlossen wird.In this context, it is particularly advantageous if the wound form element rests not only until the end of the drying process, but according to the invention also until installation and subsequent concreting as part of the component for thermal insulation on the central section, where it is then separated from the material of the associated component, i.e. in particular from concrete is enclosed.

Für eine Vergleichmäßigung der Kraftübertragung ist es von besonderem Vorteil, wenn die Oberfläche des Wickelformelements im Anlagebereich an den Mittelabschnitt gleichmäßig und eben ausgebildet ist, wobei die Oberflächenebene an den gekrümmten Verlauf der Mittelabschnitt-Schlaufe im Scheitelbereich angepasst, also selbst ebenso gekrümmt ist. Die Oberflächenebene kann somit zum Beispiel die Form eines Segments einer Zylindermantelfläche aufweisen. Ebenso kann die Oberflächenebene aber auch bauchig ausgebildet sein, wodurch sie eher der Form eines Segments einer Torusmantelfläche entspricht.To equalize the power transmission, it is of particular advantage if the surface of the winding form element in the area of contact with the middle section is uniform and flat, with the surface plane being adapted to the curved course of the middle section loop in the apex area, i.e. being curved in the same way. The surface plane can thus have the shape of a segment of a cylinder jacket surface, for example. However, the surface plane can also be bulbous, whereby it corresponds more to the shape of a segment of a torus jacket surface.

Sofern vorliegend von Wickelformelement die Rede ist, so soll hierunter aber nicht nur ein Element verstanden werden, das an der tatsächlichen Herstellung des Mittelabschnitts beteiligt ist, sondern es sind natürlich auch solche Elemente möglich, die unabhängig vom Mittelabschnitt hergestellt sind und auch zu dessen Herstellung keinen Beitrag leisten. Wickelformelement meint in diesem Zusammenhang vor allem ein solches Element, das an den schlaufenförmigen Mittelabschnitt insbesondere hinsichtlich der Form im Anschluss- und Anlagebereich angepasst ist, um so eine besonders gute und zuverlässige Kraftübertragung sicherzustellen, ohne die das Kompositelement seine sonstigen Vorteile wie z.B. den modularen Aufbau aus unterschiedlichen Materialien und Formen nicht bieten könnte. Und ein Wickelformelement im Sinne der Erfindung ist außerdem ein solches Element, das unabhängig von seiner Form zum kraftübertragenden Anschluss eines Verankerungsabschnitts am Mittelabschnitt dient, wobei für den Verankerungsabschnitt die vorliegend beschriebenen und in den Zeichnungen dargestellten sehr unterschiedlichen Ausführungsformen möglich sind.If we are talking about a winding form element, this should not only be understood to mean an element that is involved in the actual production of the middle section, but also elements that are produced independently of the middle section and are not used for its production are of course also possible Make contribution. In this context, a winding element primarily means an element that is adapted to the loop-shaped middle section, particularly with regard to the shape in the connection and contact area, in order to ensure particularly good and reliable power transmission without compromising the other advantages of the composite element, such as the modular structure made of different materials and shapes could not offer. And a wound form element within the meaning of the invention is also such an element which, regardless of its shape, is used for the force-transmitting connection of an anchoring section to the middle section, the very different embodiments described here and illustrated in the drawings are possible for the anchoring section.

Eine besonders vorteilhafte Wirkverbindung ergibt sich dann, wenn das zwischen Verankerungsabschnitt und Mittelabschnitt angeordnete Wickelformelement nicht nur an dem Mittelabschnitt, sondern auch an dem Verankerungsabschnitt flächig anliegt.A particularly advantageous operative connection results when the coil form element arranged between the anchoring section and the middle section bears flat not only on the middle section but also on the anchoring section.

Für das Wickelformelement sind neben dem beschriebenen flächigen Anlagebereich für den Mittelabschnitt verschiedene Geometrien denkbar, die sich vor allem an den zusätzlichen Aufgaben orientieren: Wird das Wickelformelement auch vom Verankerungselement flächig beaufschlagt, so sollte das Wickelformelement im Anlagebereich an die Oberflächenform des Verankerungselements angepasst sein. Da Mittelabschnitt und Verankerungselement unter Zwischenfügung des Wickelformelements ineinandergreifen, ist beim Wickelformelement der Anlagebereich für das Verankerungselement auf der gegenüberliegenden Seite des Anlagebereichs für den Mittelabschnitt angeordnet.In addition to the described planar contact area for the middle section, various geometries are conceivable for the shaped winding element, which are primarily based on the additional tasks: If the shaped winding element is also acted upon by the anchoring element over a wide area, the shaped winding element should be adapted to the surface shape of the anchoring element in the contact area. Since the middle section and the anchoring element engage with one another with the interposition of the former, the contact area for the anchoring element is arranged on the opposite side of the contact area for the middle section in the case of the former.

Besteht das Verankerungselement zum Beispiel aus einem U-förmig gebogenen Bewehrungsstab mit kreisförmigem Querschnitt, so sollte der Anlagebereich ebenso gleichmäßig und eben ausgebildet und gekrümmt sein. Die Oberflächenebene weist dann die Form eines Segments einer Torusmantelfläche auf. Ist hingegen das Verankerungselement U-förmig gebogen, besteht aber aus einem Bewehrungsstab mit rechteckigem Querschnitt, so weist die Oberflächenebene die Form eines Segments einer Zylindermantelfläche auf.If the anchoring element consists, for example, of a U-shaped reinforcement rod with a circular cross-section, the contact area should also be designed evenly and evenly and be curved. The surface plane then has the shape of a segment of a torus envelope surface. If, on the other hand, the anchoring element is bent in a U-shape, but consists of a reinforcing bar with a rectangular cross section, then the surface plane has the shape of a segment of a cylindrical jacket surface.

Dadurch dass die Verankerungsabschnitte vorzugsweise aus Stahl, insbesondere Betonstahl bestehen, lassen sie sich in herkömmlicher Weise in den angrenzenden Bauteilen verankern, ohne dass dies - wie im Falle von faserverstärkten Kunststoffstäben - durch exotische Umformungen (in Form der erwähnten Querplatten, Schlaufen etc.) und hierdurch verursachte Einbauprobleme mit der Anschlussbewehrung erkauft werden müsste oder bei Verwendung profilierter Kunststoffstäbe durch Schäden im gegenseitigen Anlagebereich, welche durch die unterschiedlichen Temperaturdehnzahlen von Beton einerseits und Kunststoffstab andererseits hervorgerufen werden.Because the anchoring sections are preferably made of steel, in particular reinforcing steel, they can be anchored in the adjoining components in a conventional manner without - as in the case of fiber-reinforced plastic rods - by exotic forming (in the form of the mentioned transverse plates, loops, etc.) and Installation problems with the connection reinforcement caused by this would have to be paid for or, when using profiled plastic rods, due to damage in the mutual contact area, which the different coefficients of thermal expansion of concrete on the one hand and plastic rod on the other.

Auch lassen sich durch das erfindungsgemäße Bauelement mit den als Kompositelement ausgebildeten Zugbewehrungselementen die Einbauprobleme des Standes der Technik vermeiden, indem die Zugbewehrungselemente aus dem nur geringfügig gegenüber dem Isolierkörper vorstehenden schlaufenförmigen Mittelabschnitt und dem hieran angeschlossenen Verankerungsabschnitt bestehen. Dabei überlappt nur der Verankerungsabschnitt die Anschlussbewehrung, welcher dann so ausgebildet werden kann, dass einerseits Einbauprobleme wie z.B. Kollisionen mit der Anschlussbewehrung vermieden werden und dass andererseits die Verankerung im angrenzenden Bauteil optimiert wird.The installation problems of the prior art can also be avoided by the structural element according to the invention with the tension reinforcement elements designed as a composite element, in that the tension reinforcement elements consist of the loop-shaped central section protruding only slightly in relation to the insulating body and the anchoring section connected thereto. Only the anchoring section overlaps the connection reinforcement, which can then be designed in such a way that on the one hand installation problems such as collisions with the connection reinforcement are avoided and on the other hand the anchoring in the adjacent component is optimized.

Im Falle von Bewehrungsstäben aus Stahl erfolgt dabei die Verankerung in der Regel durch eine Rippung der Mantelfläche der Bewehrungsstäbe, wobei diese Rippung ganz einfach während des Herstellungsprozesses dieser Bewehrungselemente eingebracht werden kann. Hierbei empfiehlt es sich, dass der Verankerungsabschnitt der Zug- bzw. Querkraftbewehrungselemente aus einem insbesondere U-förmig gebogenen stabförmigen Verankerungselement besteht, dass das Verankerungselement in die Schlaufenform des Mittelabschnitts eingehakt ist und dass das Wickelformelement das U-förmig gebogene stabförmige Verankerungselement zumindest teilweise in dessen U-Scheitelbereich beaufschlagt, das heißt in dem Bereich der U-förmigen Biegung.In the case of reinforcing bars made of steel, the anchoring is usually carried out by ribbing the outer surface of the reinforcing bars, and this ribbing can be easily introduced during the manufacturing process of these reinforcing elements. It is recommended here that the anchoring section of the tensile or shear force reinforcement elements consists of a rod-shaped anchoring element bent in particular in a U-shape, that the anchoring element is hooked into the loop shape of the middle section and that the coiled-form element at least partially fixes the U-shaped bent rod-shaped anchoring element in its U-apex area applied, that is in the area of the U-shaped bend.

Die erfindungsgemäße Schlaufenform ist auch dahingehend vorteilhaft, dass jedes Bewehrungselement einen Mittelabschnitt mit zwei parallel zueinander verlaufenden Abschnitten aufweist, die für die Kraftübertragung mit herangezogen werden können. Denn der Mittelabschnitt weist zwei sich in Horizontalrichtung (bzw. im Falle des Querkraftbewehrungselements im Wesentlichen geneigt zur Horizontalen) im Wesentlichen parallel zueinander vorzugsweise nebeneinander und/oder übereinander erstreckende und über den Scheitelbereich miteinander verbundene Schlaufenteilabschnitte auf, die jeweils einen Teil der zu übertragenden Kraft aufnehmen. Dadurch lässt sich verglichen mit einem üblichen Bewehrungsstab die Kraftübertragung erhöhen - und bei gleichen Querschnitt von Bewehrungsstab einerseits und einzelnem Schlaufenabschnitt andererseits sogar verdoppeln. In einem Ausführungsbeispiel besteht eine Schlaufe aus etwa 50 Faserwicklungen. Nachdem jeder Schlaufenteilabschnitt diese 50 Faserwicklungen aufweist, erstrecken sich insgesamt 100 Faserabschnitte zwischen den beiden angrenzenden Bauteilen, wodurch ein solches Zugbewehrungselement natürlich entsprechend doppelt so viele Kräfte übertragen kann als ein einzelner Zugbewehrungsstab mit 50 Fasern.The loop shape according to the invention is also advantageous in that each reinforcement element has a central section with two sections running parallel to one another, which can also be used for force transmission. This is because the middle section has two loop subsections which extend in the horizontal direction (or in the case of the shear force reinforcement element essentially inclined to the horizontal) essentially parallel to one another, preferably next to one another and/or one above the other and are connected to one another via the apex region, each of which absorbs part of the force to be transmitted . As a result, the power transmission can be increased compared to a conventional reinforcing bar - and with the same cross-section of the reinforcing bar on the one hand and the individual loop section on the other even double. In one embodiment, a loop consists of about 50 fiber wraps. Since each loop section has these 50 filament wraps, a total of 100 filament sections extend between the two adjacent members, which of course means that such a tensile reinforcing element can correspondingly transmit twice as many forces as a single 50-filament tensile reinforcing bar.

Die Schlaufenform der Mittelabschnitte lässt sich aber nicht nur vorteilhaft zum Anschluss an U-förmig gebogene Verankerungselemente verwenden, sondern auch zur Festlegung eines relativ zum Mittelabschnitt seitlich, das heißt quer zur Längserstreckung des Mittelabschnitts vorstehenden Endverankerungselements, das ebenfalls als Verankerungsabschnitt fungieren kann. Dieses Endverankerungselement ist insbesondere einstückig an das Wickelformelement angeschlossen und dient im Wesentlichen dazu, die Oberfläche des Mittelabschnitts im Scheitelbereich durch seitlich vorstehende Teilbereiche zu vergrößern und auch ohne zusätzliche stabförmige Bewehrungselemente eine Verankerung des Zug- oder Querkraftbewehrungselements im zugehörigen Bauteil zu ermöglichen, wie dies durch die Verankerungsplatten des Standes der Technik an sich bekannt ist. Wichtig ist hierbei, dass dieses Endverankerungselement eine Struktur bildet, die auftretende Zugbelastungen aufgrund ihrer Geometrie formschlüssig abfängt und sich hierbei im Beton des angrenzenden Bauteils abstützt.The loop shape of the middle sections can not only be used advantageously for connection to U-shaped anchoring elements, but also for fixing an end anchoring element that protrudes laterally relative to the middle section, i.e. transversely to the longitudinal extent of the middle section, and which can also function as an anchoring section. This end anchoring element is in particular connected in one piece to the winding form element and essentially serves to enlarge the surface of the central section in the apex area by means of laterally protruding sub-areas and also to enable anchoring of the tension or shear force reinforcement element in the associated component without additional rod-shaped reinforcement elements, as is shown by the Anchoring plates of the prior art is known per se. It is important here that this end anchoring element forms a structure which, due to its geometry, absorbs occurring tensile loads in a form-fitting manner and is supported in the concrete of the adjacent component.

Dabei weist das Endverankerungselement zweckmäßigerweise zur besseren Verankerung und Zugkraftübertragung auf das Bauteil einen parallel zum Isolierkörper orientierten Querschnitt auf, der größer ist als der Querschnitt des Mittelabschnitts und hierbei seitlich vorstehende Endverankerungsabschnitte bildet, um so wie bei den bekannten Verankerungsplatten die Verankerung des Zug- oder Querkraftbewehrungselements im Bauteil zu verbessern, indem zum einen die Oberfläche des Bewehrungselements und somit die Kraftübertragungsfläche vergrößert wird und indem zum anderen Teilbereiche des Bewehrungselements gebildet werden, die vom Bauteil hintergriffen werden und mit diesem einen Formschluss eingehen.For better anchoring and tensile force transmission to the component, the end anchoring element expediently has a cross section oriented parallel to the insulating body, which is larger than the cross section of the middle section and forms laterally protruding end anchoring sections in order to anchor the tensile or shear force reinforcement element, as in the known anchoring plates in the component by, on the one hand, increasing the surface area of the reinforcement element and thus the force transmission area and, on the other hand, by forming partial areas of the reinforcement element which the component engages behind and form a form fit with.

Dabei kann sich in Abweichung von einer ebenen Plattenform die seitlich vorstehende Außenform der Endverankerungsabschnitte mit größer werdendem Abstand vom Isolierkörper gegenüber dem Mittelabschnitt vergrößern und beispielsweise tannenbaumähnlich ausgebildet sein. Hierdurch lässt sich die Verankerung der Zugstäbe bzw. Zugbewehrungselemente im zugehörigen Betonbauteil verbessern und damit deren Einbindelänge deutlich reduzieren.Here, in deviation from a flat plate shape, the laterally protruding outer shape of the end anchoring sections can increase with increasing distance from the insulating body compared to the central section and can be designed like a fir tree, for example. As a result, the anchoring of the tension rods or tension reinforcement elements in the associated concrete component can be improved and their binding length can thus be significantly reduced.

Vor allem die Endverankerungselemente, aber auch die stabförmigen Verankerungselemente können ebenso wie der Mittelabschnitt aus glasfaserverstärktem Kunststoffmaterial bestehen. Bezüglich der Endverankerungselemente ist es darüber hinaus auch möglich, diese aus Beton herzustellen, wobei in diesem Zusammenhang unter Beton jegliche Form eines aushärtenden und/oder abbindfähigen Baustoffs verstanden werden soll, insbesondere ein zementhaltiger, faserbewehrter Baustoff wie Beton, wie hochfester oder ultra-hochfester Beton oder wie hochfester oder ultra-hochfester Mörtel, ein Kunstharzgemisch oder ein Reaktionsharzgemisch.In particular, the end anchoring elements, but also the rod-shaped anchoring elements, like the middle section, can consist of glass fiber reinforced plastic material. With regard to the end anchoring elements, it is also possible to produce them from concrete, in which case concrete should be understood to mean any form of a hardening and/or setting building material, in particular a cementitious, fiber-reinforced building material such as concrete, such as high-strength or ultra-high-strength concrete or such as high-strength or ultra-high-strength mortar, a synthetic resin mixture or a reaction resin mixture.

Zweckmäßigerweise ist der Verankerungsabschnitt der Bewehrungselemente an einem freien Ende des zugehörigen Mittelabschnitts festgelegt. Ist in diesem Fall der Verankerungsabschnitt der Bewehrungselemente fluchtend zu diesem sich im eingebauten Zustand des Bauelementes im Wesentlichen horizontal erstreckenden Mittelabschnitt angeordnet, so ergibt sich hierdurch eine Hintereinanderanordnung bzw. Reihenschaltung der unterschiedlichen Teile der Bewehrungselemente, wobei jeder Teil dort angeordnet wird, wofür er die günstigsten Materialeigenschaften aufweist.The anchoring section of the reinforcement elements is expediently fixed at a free end of the associated central section. If, in this case, the anchoring section of the reinforcement elements is arranged in alignment with this central section, which extends essentially horizontally when the component is installed, this results in the different parts of the reinforcement elements being arranged one behind the other or in series, with each part being arranged where it is most favorable has material properties.

Was die Materialien des mehrteiligen Kompositelements, also des Zug- oder Querkraftbewehrungselementes betrifft, so ist es bevorzugt, dass der Verankerungsabschnitt aus Betonstahl besteht, der eine Temperaturdehnzahl, also eine Wärmedehnung in der Größenordnung der Temperaturdehnzahl bzw. Wärmedehnung von Beton aufweist und somit zerstörungsfrei entsprechenden temperaturbedingten Verformungen bzw. Dehnungen des Betons folgen kann. Des Weiteren ist es bevorzugt, dass der Mittelabschnitt des Zug- oder Querkraftbewehrungselements aus faserverstärktem und insbesondere glasfaserverstärktem Kunststoffmaterial besteht, das zum einen in Zugkraftrichtung ausreichend belastbar ist und zum anderen eine schlechte Wärmeleitfähigkeit aufweist, die im Bereich des Isolierkörpers angestrebt ist. Es sei darauf hingewiesen, dass die Formulierung "faserverstärktes Kunststoffmaterial" auch solche Faserbewehrungen, insbesondere Glasfaserbewehrungen umfasst, deren Faseranteil, insbesondere Glasfaseranteil höher als 85 Gew.-% ist, so dass das Gewicht des zusätzlich zu den Fasern verwendeten Matrixmaterials, wie Kunstharz weniger als 15 % verglichen mit dem Gewicht dieses Bewehrungselements beträgt.As far as the materials of the multi-part composite element are concerned, i.e. the tensile or shear force reinforcement element, it is preferred that the anchoring section consists of reinforcing steel, which has a thermal expansion coefficient, i.e. thermal expansion, in the order of magnitude of the thermal expansion coefficient or thermal expansion of concrete and thus non-destructively corresponding temperature-related Deformations or expansions of the concrete can follow. Furthermore, it is preferred that the middle section of the tensile or transverse force reinforcement element consists of fiber-reinforced and in particular glass-fiber-reinforced plastic material, which on the one hand can be sufficiently loaded in the direction of tensile force is and on the other hand has a poor thermal conductivity, which is desirable in the area of the insulating body. It should be noted that the wording "fibre-reinforced plastic material" also includes fiber reinforcements, in particular glass fiber reinforcements, whose fiber content, in particular glass fiber content, is higher than 85% by weight, so that the weight of the matrix material used in addition to the fibers, such as synthetic resin, is less than 15% compared to the weight of this reinforcement element.

Da der Betonstahl der endständigen Verankerungsabschnitte aus Korrosionsschutzgründen eine Mindestbetonüberdeckung einhalten muss, dürfen sich die Verankerungsabschnitte nicht bis an den Isolierkörper heran erstrecken, um eine Korrosion der Verankerungsabschnitte zu vermeiden. Aus diesem Grunde ist es zweckmäßigerweise vorgesehen, dass der Anschlussbereich im eingebauten Zustand einen horizontalen Abstand vom Isolierkörper aufweist, der zumindest einmal und höchstens fünfmal so groß ist wie der Durchmesser dM des Mittelabschnitts. Dadurch kann die Festlegung des Verankerungsabschnitts am Mittelabschnitt außerhalb des Isolierkörpers in einem Bereich erfolgen, der durch die erforderliche Mindestbetonüberdeckung vor Korrosion geschützt ist.Since the reinforcing steel of the terminal anchoring sections must have a minimum concrete cover for reasons of corrosion protection, the anchoring sections must not extend as far as the insulating body in order to avoid corrosion of the anchoring sections. For this reason, it is expediently provided that the connection area, when installed, has a horizontal distance from the insulating body which is at least once and at most five times as great as the diameter d M of the middle section. As a result, the anchoring section can be fixed to the middle section outside of the insulating body in an area that is protected from corrosion by the required minimum concrete covering.

Die Beabstandung des Anschlussbereiches vom Isolierkörper hat jedoch noch einen weiteren wesentlichen Effekt und Vorteil: Zweckmäßigerweise ist der Mittelabschnitt auf seiner radialen Außenseite zumindest im Bereich zwischen Isolierkörper und Anschlussbereich im Wesentlichen glattwandig ausgebildet. Dadurch wird ein übermäßiger Verbund zwischen dem Mittelabschnitt und dem den Mittelabschnitt umgebenden Material des angrenzenden Bauteils vermieden und eine Pufferzone gebildet, die dafür sorgt, dass sich die Biegesteifigkeit der Bewehrungselemente beim Verlassen des Isolierkörpers und beim Eintritt in das angrenzende Bauteil nicht abrupt, sondern nur allmählich ändert. Denn ein abrupter Steifigkeitssprung würde zu hohen Belastungen im Bewehrungselement sowie an der Vorderkante des angrenzenden Bauteils führen: Einerseits können die zu hohen Belastungen eine Delamination des aus faserverstärktem Kunststoffmaterial bestehenden Bewehrungselements hervorrufen; andererseits kann das Baumaterial an der Vorderkante des angrenzenden Bauteils abplatzen, was wiederum die erforderliche Mindestbetonüberdeckung zerstört bzw. reduziert und somit den Korrosionsschutz für das Bewehrungselement aufheben würde.However, the distance between the connecting area and the insulating body has another significant effect and advantage: the middle section is expediently designed with essentially smooth walls on its radial outside, at least in the area between the insulating body and the connecting area. This avoids an excessive bond between the central section and the material of the adjacent component surrounding the central section, and forms a buffer zone which ensures that the flexural rigidity of the reinforcement elements does not change abruptly when leaving the insulating body and entering the adjacent component, but only gradually changes. Because an abrupt jump in rigidity would lead to high loads in the reinforcement element and on the front edge of the adjacent component: On the one hand, the excessive loads can cause delamination of the reinforcement element made of fiber-reinforced plastic material; on the other hand, the building material can flake off at the front edge of the adjoining component, which in turn destroys or reduces the required minimum concrete cover and thus would nullify the corrosion protection for the reinforcement element.

Der im Wesentlichen glattwandige Mittelabschnitt dient somit dazu, eine fugennahe Verankerung des Bewehrungselements im angrenzenden Bauteil zu verhindern, so dass die Verankerung erst im Anschlussbereich sowie dem in Axialrichtung nachfolgenden Bereich des Bewehrungselements, nämlich des Verankerungsabschnittes erfolgt. Indem man den Anschlussbereich vom fugennahen Randbereich bzw. vom Isolierkörper weg in das angrenzende Bauteil verlegt, vergrößert man die Länge der Abschnitte des Bewehrungselements mit reduzierter Biegesteifigkeit. Dadurch sind die so eingespannten Bewehrungselemente insgesamt biegeweicher und deutlich besser in der Lage, temperaturbedingten Relativbewegungen zwischen den angrenzenden Bauteilen in Quer- bzw. Schubrichtung zu folgen. Diese Erhöhung der Biege- bzw. Schubweichheit vermeidet eine zu schnelle bzw. starke Ermüdung der Bewehrungselemente.The essentially smooth-walled central section thus serves to prevent the reinforcement element from being anchored near the joint in the adjoining component, so that anchoring takes place only in the connection area and in the area of the reinforcement element following in the axial direction, namely the anchoring section. By moving the connection area away from the edge area near the joint or from the insulating body into the adjoining component, the length of the sections of the reinforcement element with reduced bending stiffness is increased. As a result, the reinforcement elements clamped in this way are more flexible overall and are significantly better able to follow temperature-related relative movements between the adjacent components in the transverse or shear direction. This increase in bending and shearing flexibility prevents the reinforcement elements from fatigue too quickly or severely.

Während im Stand der Technik Anweisungen dahingehend zu finden sind, dass die freie, d.h. nicht radial abgestützte Länge eines aus faserverstärktem Kunststoffmaterial bestehenden Zugbewehrungselementes zwischen den beiden Einspannstellen möglichst kurz bemessen sein muss, um die Gesamtdehnung des Zugbewehrungselementes in Axialrichtung möglichst klein zu halten, nimmt der Gegenstand der vorliegenden Erfindung eine solche Erhöhung der axialen Dehnung absichtlich in Kauf, indem die Einspannstellen vom Isolierkörper weg in die angrenzenden Bauteile verschoben sind, um dadurch die Zugbewehrungselemente biegeweicher zu gestalten, was in vorteilhafter Weise die gewünschte Reduzierung der Materialermüdung zur Folge hat.While instructions can be found in the prior art to the effect that the free, i.e. not radially supported, length of a tensile reinforcement element made of fiber-reinforced plastic material between the two clamping points must be as short as possible in order to keep the total expansion of the tensile reinforcement element in the axial direction as small as possible The subject of the present invention accepts such an increase in axial expansion intentionally, in that the clamping points are shifted away from the insulating body into the adjacent components, in order to make the tensile reinforcement elements more flexible, which advantageously results in the desired reduction in material fatigue.

Mit anderen Worten: Wäre - wie im Stand der Technik üblich - ein aus einem Kunststoffmaterial bestehendes Zugbewehrungselement mit einer gerippten Mantelfläche versehen und unmittelbar in ein angrenzendes Betonbauteil eingesetzt und dort verankert, so würde sich der Bereich mit reduzierter Biegesteifigkeit auf die Abmessungen des Isolierkörpers beschränken. Es ist offensichtlich, dass ein solches zu biegesteifes Zugbewehrungselement nicht in der Lage sein wird, den üblichen temperaturbedingten Relativbewegungen der beiden angrenzenden Bauteile in ausreichendem Maße zu folgen. Gleichzeitig würde das Zugbewehrungselement im Übergangsbereich zwischen Isolierkörper und angrenzendem Bauteil durch den abrupten Übergang zwischen den unterschiedlichen umgebenden Materialien einen Steifigkeitssprung aufweisen, der zu übermäßigen und ggf. mit Zerstörungen einhergehenden Belastungen des Zugbewehrungselements wie auch des Materials des angrenzenden Bauteils führen würde.In other words: If - as is usual in the prior art - a tensile reinforcement element consisting of a plastic material was provided with a ribbed outer surface and inserted directly into an adjacent concrete component and anchored there, the area with reduced bending stiffness would be limited to the dimensions of the insulating body. It is obvious that such a too rigid tensile reinforcement element will not be able to follow the usual temperature-related relative movements of the two adjacent components to a sufficient extent. At the same time, the tensile reinforcement element in the transition area between the insulating body and the adjacent component would be damaged by the abrupt transition between the different Surrounding materials have a jump in stiffness, which would lead to excessive stresses, possibly associated with destruction, on the tensile reinforcement element and the material of the adjacent component.

Das erfindungsgemäße Bauelement zur Wärmedämmung weist zweckmäßigerweise zusätzlich zu den Zugbewehrungselementen zur Druckkraft- und/oder Querkraftübertragung zwischen den angrenzenden Bauteilen - wie es auch aus dem einschlägigen Stand der Technik bekannt und wie es bei derartigen Bauelementen zur Wärmedämmung üblich ist - Druckelemente und/oder Querkraftelemente auf.The component for thermal insulation according to the invention expediently has pressure elements and/or transverse force elements in addition to the tensile reinforcement elements for the transmission of compressive force and/or shear force between the adjacent components - as is also known from the relevant prior art and as is usual with such structural elements for thermal insulation .

Soweit vorliegend bezüglich des Materials der angrenzenden Bauteile, also insbesondere des Gebäudes und des vorkragenden Außenteils von Beton die Rede ist, so soll hierunter jegliche Form eines aushärtenden und/oder abbindfähigen Baustoffs verstanden werden, insbesondere ein zementhaltiger, faserbewehrter Baustoff wie Beton, wie hochfester oder ultra-hochfester Beton oder wie hochfester oder ultra-hochfester Mörtel, ein Kunstharzgemisch oder ein Reaktionsharzgemisch.Insofar as the material of the adjoining components, i.e. in particular the building and the projecting outer part of concrete, is mentioned here, this should be understood to mean any form of a hardening and/or setting building material, in particular a cementitious, fiber-reinforced building material such as concrete, such as high-strength or ultra high performance concrete or such as high performance or ultra high performance mortar, a synthetic resin mix or a reaction resin mix.

Weitere Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnungen; hierbei zeigen

Figur 1
ein erfindungsgemäßes Bauelement zur Wärmedämmung in schematischer und teilweise geschnittener Seitenansicht
Figur 2
das Bauelement aus Figur 1 in perspektivischer Seitenansicht;
Figur 3
das Bauelement aus Figur 1 in schematischer und teilweise geschnittener Draufsicht;
Figur 3a
ein Detail von Figur 3;
Figur 4
ein alternatives erfindungsgemäßes Bauelement zur Wärmedämmung in schematischer und teilweise geschnittener Seitenansicht;
Figur 5
das Bauelement aus Figur 4 in perspektivischer Seitenansicht;
Figur 6
das Bauelement aus Figur 4 in schematischer und teilweise geschnittener Draufsicht;
Figur 7
ein weiteres alternatives erfindungsgemäßes Bauelement zur Wärmedämmung in schematischer und teilweise geschnittener Seitenansicht;
Figur 8
das Bauelement aus Figur 7 in perspektivischer Seitenansicht;
Figur 9
das Bauelement aus Figur 7 in schematischer und teilweise geschnittener Draufsicht.
Figur 10
ein weiteres alternatives erfindungsgemäßes Bauelement zur Wärmedämmung in schematischer und teilweise geschnittener Seitenansicht;
Figur 11
das Bauelement aus Figur 10 in perspektivischer Seitenansicht;
Figur 12
das Bauelement aus Figur 10 in schematischer und teilweise geschnittener Draufsicht.
Further features and advantages of the present invention result from the following description of exemplary embodiments with reference to the drawings; show here
figure 1
a component according to the invention for thermal insulation in a schematic and partially sectioned side view
figure 2
the component off figure 1 in perspective side view;
figure 3
the component off figure 1 in a schematic and partially sectioned plan view;
Figure 3a
a detail of figure 3 ;
figure 4
an alternative inventive component for thermal insulation in a schematic and partially sectioned side view;
figure 5
the component off figure 4 in perspective side view;
figure 6
the component off figure 4 in a schematic and partially sectioned plan view;
figure 7
another alternative component according to the invention for thermal insulation in a schematic and partially sectioned side view;
figure 8
the component off figure 7 in perspective side view;
figure 9
the component off figure 7 in a schematic and partially sectioned plan view.
figure 10
another alternative component according to the invention for thermal insulation in a schematic and partially sectioned side view;
figure 11
the component off figure 10 in perspective side view;
figure 12
the component off figure 10 in a schematic and partially sectioned plan view.

Die Figuren 1, 2 und 3 zeigen in Seitenansicht, perspektivischer Seitenansicht und Draufsicht ein Bauelement zur Wärmedämmung 1 mit einem quaderförmigen Isolierkörper 2, der dazu vorgesehen ist, in einer zwischen zwei Betonbauteilen, nämlich einem Balkon A und einer Gebäudedecke B belassenen Bauteilfuge angeordnet zu werden und diese beiden Betonbauteile A, B voneinander in wärmegedämmter Art zu beabstanden. Der Isolierkörper 2 ist aus mehreren Teilen (nicht dargestellt) zusammengesetzt, um den Einbau von Bewehrungselementen in Form von Zugstäben 3, in Form von Querkraftstäben 4 und in Form von Druckelementen 5 zu ermöglichen. Die Anordnung der Bewehrungselemente erfolgt in der im Stand der Technik bekannten und üblichen Art und Weise, nämlich indem im oberen Bereich des Isolierkörpers 2 die Zugbewehrungselemente 3 angeordnet sind, die sich im eingebauten Zustand in horizontaler Richtung erstrecken und zur Zugkraftübertragung zwischen den beiden an das Bauelement zur Wärmedämmung angeschlossenen Bauteilen A, B dienen und hierzu in diesen Bauteilen verankert werden.The Figures 1, 2 and 3 show a side view, perspective side view and top view of a component for thermal insulation 1 with a cuboid insulating body 2, which is intended to be arranged in a component joint left between two concrete components, namely a balcony A and a building ceiling B, and these two concrete components A, B spaced apart from each other in a thermally insulated manner. The insulating body 2 is composed of several parts (not shown) in order to allow the installation of reinforcement elements in the form of tension rods 3 , in the form of transverse force rods 4 and in the form of pressure elements 5 . The reinforcement elements are arranged in the manner known and customary in the prior art, namely by arranging the tensile reinforcement elements 3 in the upper region of the insulating body 2, which extend in the horizontal direction when installed and for the transmission of tensile forces between the two to the component serve for thermal insulation connected components A, B and are anchored in these components for this purpose.

Im unteren Bereich, der sogenannten Druckzone des Isolierkörpers 2 werden die Druckelemente 5 angeordnet und zwar ebenso mit im Wesentlichen horizontaler Erstreckungsrichtung, wobei sie jedoch im gezeigten Ausführungsbeispiel im Wesentlichen nicht gegenüber dem Isolierkörper 2 vorstehen. Schließlich sind noch in der üblichen Art und Weise Querkraftstäbe 4 vorgehen, die im Bereich des Isolierkörpers 2 geneigt zur Horizontalen verlaufen und den von den Bewehrungselementen des Bauelements zur Wärmedämmung aufzunehmenden Belastungen entsprechend von der Zugzone auf der einen Seite des Isolierkörpers schräg nach unten in die Druckzone auf der anderen Seite des Isolierkörpers verlaufen, um dort vertikal in Richtung der Zugzonen nach oben abgewinkelt und anschließend nach einer weiteren Abwinklung parallel zu den Zugbewehrungselementen zu verlaufen.In the lower region, the so-called pressure zone of the insulating body 2, the pressure elements 5 are arranged, also with a substantially horizontal direction of extension, although in the exemplary embodiment shown they do not essentially protrude in relation to the insulating body 2. Finally, shear force rods 4 are to be used in the usual manner, which run inclined to the horizontal in the area of the insulating body 2 and from the reinforcement elements The loads to be absorbed by the component for thermal insulation run diagonally downwards from the tension zone on one side of the insulating body into the compression zone on the other side of the insulating body, where it bends vertically upwards in the direction of the tensile zones and then, after a further bend, parallel to the tensile reinforcement elements to get lost.

Wesentlich für die vorliegende Erfindung sind nun die Zugbewehrungselemente 3, die als mehrteiliges Kompositelement aufgebaut sind und einen schlaufenförmigen Mittelabschnitt 3a aus faserverstärktem Kunststoff sowie an dessen einem Ende einen Verankerungsabschnitt 3b in Form eines U-förmig gebogenen Stabmaterials sowie an dessen anderem Ende einen Verankerungsabschnitt in Form eines Endverankerungselements 3c aufweisen. Der Mittelabschnitt 3a erstreckt sich im Bereich des Isolierkörpers 2 in horizontaler Richtung und steht beidseits des Isolierkörpers 2 etwas in horizontaler Richtung vor und wird mit diesem vorstehenden Bereich im eingebauten Zustand im Bereich der angrenzenden Bauteile A, B angeordnet.Essential for the present invention are the tensile reinforcement elements 3, which are constructed as a multi-part composite element and have a loop-shaped central section 3a made of fiber-reinforced plastic and an anchoring section 3b in the form of a U-shaped rod material at one end and an anchoring section at the other end have an end anchoring element 3c. The middle section 3a extends horizontally in the area of the insulating body 2 and protrudes somewhat horizontally on both sides of the insulating body 2 and is arranged with this protruding area in the area of the adjoining components A, B in the installed state.

Mittelabschnitt 3a und Verankerungsabschnitt 3b überlappen sich jeweils in einem Anschlussbereich 3h unter Zwischenfügung eines Wickelformelements 3i. Dieses Wickelformelement dient dazu, beim Herstellen des aus faserverstärktem Kunststoff bestehenden schlaufenförmigen Mittelabschnitts 3a eine Richtungsänderung der Fasern zu ermöglichen und einen Scheitelbereich 3k auszubilden, indem es die Form darstellt, um die die nassen Fasern herumgewickelt werden. Verwendet man zwei solcher Wickelformelemente 3i, so kann man insgesamt die Schlaufenform erhalten, bestehend aus zwei sich im Wesentlichen parallel zueinander erstreckenden und an ihren Enden über jeweils einen Scheitelbereich 3k miteinander verbundenen Schlaufenteilabschnitten 3g. Indem das Wickelformelement auch noch nach dem Herstellen und dem Trocknen des schlaufenförmigen Mittelabschnitts in den Scheitelbereichen verbleibt, liegt es auch im eingebauten Zustand flächig an dem zugeordneten Scheitelbereich des Mittelabschnitts an und gewährleistet hierbei eine spielfreie Zugkraftübertragung zwischen Verankerungsabschnitt 3b und Mittelabschnitt 3a.Central section 3a and anchoring section 3b each overlap in a connection area 3h with the interposition of a winding form element 3i. This winding former serves to allow the fibers to change direction when the loop-shaped central portion 3a made of fiber reinforced plastic is formed, and to form a crest portion 3k by constituting the shape around which the wet fibers are wound. If two such winding form elements 3i are used, the overall loop shape can be obtained, consisting of two loop sections 3g which extend essentially parallel to one another and are connected to one another at their ends via a respective apex region 3k. Since the winding form element remains in the apex areas after the production and drying of the loop-shaped middle section, it also lies flat against the associated apex area of the middle section when installed and ensures play-free transmission of tensile forces between anchoring section 3b and middle section 3a.

Diese spielfreie Verbindung zwischen Verankerungsabschnitt und Mittelabschnitt unter Zwischenfügung eines Wickelformelements besteht sich nicht nur im Anschlussbereich 3h, in welchem sich der Mittelabschnitt 3a und der aus U-förmig gebogenem Stabmaterial bestehende Verankerungsabschnitt 3b überlappen, sondern auch im gegenüberliegenden Anschlussbereich 3h, wo sich Mittelabschnitt 3a und ein als Verankerungsabschnitt fungierendes Endverankerungselement 3c überlappen.This play-free connection between the anchoring section and middle section with the interposition of a winding form element not only exists in the connection area 3h, in which the middle section 3a and the anchoring section 3b consisting of rod material bent into a U-shape overlap, but also in the opposite connection area 3h, where middle section 3a and overlap an end anchoring element 3c acting as an anchoring section.

Was das Endverankerungselement 3c betrifft, so weist dieses einen inneren Bereich auf, der als Wickelformelement 3i fungiert, während er seitlich vorstehende Endverankerungsabschnitte 3m aufweist. Hierdurch lässt sich die Verankerung der Zugstäbe bzw. Zugbewehrungselemente 3 im zugehörigen Betonbauteil und damit deren Einbindelänge deutlich reduzieren.As for the end anchoring member 3c, it has an inner portion functioning as a coil-forming member 3i while having laterally protruding end anchoring portions 3m. As a result, the anchoring of the tension rods or tension reinforcement elements 3 in the associated concrete component and thus their binding length can be significantly reduced.

Das aus U-förmig gebogenem Stabmaterial bestehende Verankerungselement 3b ist ebenso wie der Mittelabschnitt 3a in Horizontalrichtung orientiert angeordnet, jedoch mit zueinander um 90° versetzter Scheitelachse des Scheitelbereichs 3k einerseits und der U-Basis des U-förmig gebogenen Stabmaterials andererseits. Dadurch können beide Elemente zueinander verschränkt fluchtend zueinander ineinander gesteckt werden.The anchoring element 3b consisting of rod material bent in a U-shape is arranged oriented in the horizontal direction, just like the middle section 3a, but with the apex axis of the apex region 3k offset by 90° on the one hand and the U-base of the rod material bent in a U-shape on the other hand. As a result, both elements can be plugged into one another in a crossed, aligned manner with one another.

Wie man aus Figur 1 ersehen kann, erstreckt sich der Mittelabschnitt 3a mit seinem Kunststoffmaterial etwas über den Isolierkörper hinaus und ermöglicht es somit dem aus Betonstahl bestehenden Verankerungsabschnitt 3b, an diesen Mittelabschnitt 3a in einem Bereich angeschlossen zu werden, der noch nicht korrosionsgefährdet ist. Dadurch lassen sich wesentliche Vorteile erzielen: Im Bereich des Isolierkörpers kann das besonders vorteilhafte Kunststoffmaterial des Mittelabschnitts verwendet werden, das sich vor allem durch im Vergleich zu Edelstahl günstigere Kosten und eine besonders schlechte Wärmeleitfähigkeit auszeichnet. Und im Bereich außerhalb des Isolierkörpers können schließlich im Bereich der Bauteile die Verankerungsabschnitte aus Betonstahl bestehen, welcher ähnliche Temperaturdehnzahlen wie der ihn umgebende Bauteil-Beton aufweist und somit eine optimale Verbindung mit dem Beton eingehen kann, durch den die Zugkraft vom Beton in das Zugbewehrungselement und umgekehrt übertragen werden kann, ohne dass es zu den ansonsten auftretenden Zerstörungen aufgrund zu großer Relativbewegungen kommt.how to get out figure 1 As can be seen, the middle section 3a with its plastic material extends somewhat beyond the insulating body and thus enables the anchoring section 3b made of reinforcing steel to be connected to this middle section 3a in an area which is not yet at risk of corrosion. Significant advantages can be achieved in this way: In the area of the insulating body, the particularly advantageous plastic material of the central section can be used, which is characterized above all by lower costs and particularly poor thermal conductivity compared to high-grade steel. And in the area outside of the insulating body, the anchoring sections can finally consist of reinforcing steel in the area of the components, which has similar thermal expansion coefficients to the component concrete surrounding it and can therefore form an optimal connection with the concrete, through which the tensile force from the concrete into the tensile reinforcement element and the opposite can be transferred without causing the destruction that would otherwise occur due to excessive relative movements.

Eine alternative Ausführungsform der vorliegenden Erfindung ist in den Figuren 4, 5 und 6 dargestellt, in welchen dieselben Gegenstände bzw. Bauteile wie in den Figuren 1 - 3 mit denselben Bezugszeichen versehen sind. In den Figuren 4 - 6 ist ein Bauelement 11 zur Wärmedämmung zu erkennen, das bis auf ein Detail baugleich mit dem Bauelement zur Wärmedämmung aus den Figuren 1 - 3 ist: Lediglich anstelle des Endverankerungselements 3c ist nun ein alternatives Endverankerungselement 3c' dargestellt, das zur besseren Verankerung und Zugkraftübertragung auf das Bauteil B eine sich mit größer werdendem Abstand vom Isolierkörper vergrößernde seitlich vorstehende Außenform aufweist, die letztlich tannenbaumähnlich ausgebildet ist und seitlich vorstehende Endverankerungsabschnitte 3m' aufweist. Hierdurch lässt sich die Verankerung der Zugstäbe bzw. Zugbewehrungselemente 3 im zugehörigen Betonbauteil und damit deren Einbindelänge deutlich reduzieren. Auch das Endverankerungselement 3c' weist in seinem inneren bzw. mittleren vom schlaufenförmigen Mittelabschnitt 3a beaufschlagten Bereich jeweils ein Wickelformelement 3i auf.An alternate embodiment of the present invention is disclosed in US Pat Figures 4, 5 and 6 shown, in which the same objects or components as in the Figures 1 - 3 are provided with the same reference numbers. In the Figures 4 - 6 a component 11 for thermal insulation can be seen, which is identical to the component for thermal insulation from the except for one detail Figures 1 - 3 Instead of the end anchoring element 3c, an alternative end anchoring element 3c' is now shown which, for better anchoring and transmission of tensile forces to the component B, has a laterally protruding outer shape that increases with increasing distance from the insulating body, which is ultimately designed like a Christmas tree and has laterally protruding end anchoring sections 3m ' having. As a result, the anchoring of the tension rods or tension reinforcement elements 3 in the associated concrete component and thus their binding length can be significantly reduced. The end anchoring element 3c′ also has a winding form element 3i in its inner or central region acted upon by the loop-shaped central section 3a.

In den Figuren 7, 8 und 9 ist ein weiteres alternatives Bauelement 21 zur Wärmedämmung dargestellt, bei dem wiederum dieselben Gegenstände und Bauteile wie in den vor genannten Zeichnungen mit denselben Bezugszeichen aufgeführt sind. Der einzige Unterschied des Bauelements 21 gegenüber dem Bauelement 11 besteht darin, dass beide Endverankerungselemente 3c' gleich ausgebildet sind, also das Zugbewehrungselement 3 gar keine U-förmig gebogenen Stahlstäbe besitzt.In the Figures 7, 8 and 9 1 shows another alternative thermal insulation element 21, in which again the same objects and components as in the aforementioned drawings are listed with the same reference numbers. The only difference between the component 21 and the component 11 is that both end anchoring elements 3c' are of the same design, ie the tensile reinforcement element 3 does not have any U-shaped bent steel rods.

Die Figuren 10, 11 und 12 zeigen schließlich noch ein alternatives Bauelement 31 zur Wärmedämmung, bei dem dieselben Gegenstände und Bauteile wie in den vor genannten Zeichnungen mit denselben Bezugszeichen wie insbesondere in den Figuren 1 bis 3 aufgeführt sind. Der einzige Unterschied des Bauelements 31 gegenüber dem Bauelement 1 aus den Figuren 1 bis 3 besteht darin, dass hier nicht nur die Zugbewehrungselemente 3 als Kompositelement ausgebildet sind, sondern auch ein Querkraftelement 14. Dieses besteht aus einem Mittelabschnitt 14a aus einem schlaufenförmigen faserverstärkten Kunststoffelement und einem Verankerungsabschnitt in Form eines Endverankerungselements 14c.The Figures 10, 11 and 12 finally show an alternative component 31 for thermal insulation, in which the same objects and components as in the drawings mentioned before with the same reference numerals as in particular in the Figures 1 to 3 are listed. The only difference between the component 31 and the component 1 from the Figures 1 to 3 consists in the fact that not only the tensile reinforcement elements 3 are designed as a composite element, but also a transverse force element 14. This consists of a central section 14a made of a loop-shaped, fiber-reinforced plastic element and an anchor portion in the form of an end anchor member 14c.

Wie man insbesondere aus Figur 10 erkennt, ist der Querkraftelement-Mittelabschnitt 14a wie der Zugbewehrungselement-Mittelabschnitt 3a aus Endlosfasern gewickelt unter Zuhilfenahme eines Wickelformelements 14i, das dazu dient, beim Herstellen des schlaufenförmigen Mittelabschnitts 14a eine Richtungsänderung der Fasern zu ermöglichen und einen Scheitelbereich 14k auszubilden, indem es die Form darstellt, um die die nassen Fasern herumgewickelt werden. Verwendet man zwei solcher Wickelformelemente 14i, so kann man insgesamt die Schlaufenform erhalten, bestehend aus zwei sich im Wesentlichen parallel zueinander erstreckenden und an ihren Enden über jeweils einen Scheitelbereich 14k miteinander verbundenen Schlaufenteilabschnitten 14g.How to look in particular figure 10 recognizes, the transverse force element middle section 14a, like the tension reinforcement element middle section 3a, is wound from endless fibers with the aid of a winding form element 14i, which serves to enable the fibers to change direction when the loop-shaped middle section 14a is produced and to form a crest region 14k by representing the shape around which the wet fibers are wrapped. If two such winding form elements 14i are used, the overall loop shape can be obtained, consisting of two loop sections 14g which extend essentially parallel to one another and are connected to one another at their ends via a respective apex region 14k.

Zusammengefasst bietet die vorliegende Erfindung den Vorteil, ein Bauelement zur Wärmedämmung zur Verfügung zu stellen, das Zug- und/oder Querkraftbewehrungselemente in Form von mehrteiligen Kompositelementen aufweist, die aus einem Mittelabschnitt aus schlaufenförmigem faserverstärkten Kunststoffmaterial einerseits und zumindest einem zusätzlichen Verankerungsabschnitt besteht. Hierdurch lassen sich die verschiedenen Materialien genau entsprechend ihrer Eigenschaften und Vorteile einsetzen, was im Stand der Technik bisher so nicht möglich war. Dies wird erfindungsgemäß dadurch ermöglicht, dass der Verankerungsabschnitt über ein Wickelformelement an den Mittelabschnitt angeschlossen ist und das Wickelformelement an dem Mittelabschnitt insbesondere flächig anliegt, um so die erforderliche Zugkraftübertragung zur Verfügung stellen zu können.In summary, the present invention offers the advantage of providing a component for thermal insulation that has tensile and/or shear force reinforcement elements in the form of multi-part composite elements, which consist of a central section made of loop-shaped, fiber-reinforced plastic material on the one hand and at least one additional anchoring section. As a result, the different materials can be used precisely according to their properties and advantages, which was previously not possible in the prior art. According to the invention, this is made possible in that the anchoring section is connected to the middle section via a shaped winding element and the shaped winding element bears particularly flat against the middle section in order to be able to provide the required transmission of tensile force.

BezugszeichenlisteReference List

  • 1 - Bauelement zur Wärmedämmung1 - Building element for thermal insulation
  • 2 - Isolierkörper2 - insulating body
  • 3 - Zugbewehrungselement3 - tension reinforcement element
  • 3a - Mittelabschnitt3a - middle section
  • 3b - Verankerungsabschnitt3b - anchoring section
  • 3c - Endverankerungselement (ebenso 3c`)3c - end anchoring element (also 3c`)
  • 3d - Verankerungselement3d - anchor element
  • 3g - Schlaufenteilabschnitte3g - loop sections
  • 3h - Anschlussbereich3h - connection area
  • 3i - Wickelformelement3i - winding form element
  • 3k - Scheitelbereich3k - vertex area
  • 3m - Endverankerungsabschnitte (ebenso 3m')3m - end anchor sections (also 3m')
  • 4 -Querkraftstab4 -shear bar
  • 5 - Druckelement5 - pressure element
  • 11 - Bauelement zur Wärmedämmung11 - Building element for thermal insulation
  • 14 - Querkraftbewehrungselement14 - Shear reinforcement element
  • 14a - Mittelabschnitt14a - middle section
  • 14c - Endverankerungselement14c - end anchoring element
  • 14g - Schlaufenteilabschnitte14g - loop sections
  • 14h - Anschlussbereich14h - connection area
  • 14i - Wickelformelement14i - winding form element
  • 14k - Scheitelbereich14k - vertex area
  • 21 - Bauelement zur Wärmedämmung21 - Building element for thermal insulation
  • 31 - Bauelement zur Wärmedämmung31 - Building element for thermal insulation
  • A - BetonbauteilA - concrete member
  • B - BetonbauteilB - concrete member

Claims (14)

  1. Structural element for heat insulation between two components, in particular between a building (A) and a projecting outer part (B), consisting of an insulating body (2) that is to be arranged between the two components and of reinforcing elements (3, 14), which, in the installed state of the structural element (10), extend substantially horizontally and transversely to the substantially horizontal longitudinal extent of the insulating body through the latter and in each case project in the horizontal direction with respect to the insulating body and can thereby be connected to one of the two structural elements, which preferably consist of concrete, the reinforcing elements (3, 14) having, at least in the region of the insulating body (2), a loop-shaped central portion (3a, 14a) that projects with respect to the insulating body (2) and consists at least partially of plastics material reinforced with endless fibres wound in a loop shape, wherein the reinforcing elements (3, 14) are in the form of multi-part composite elements which, in addition to the central portion (3a, 14a), have in a region outside the insulating body (2) at least one anchoring portion (3b, 3c, 3c', 14c) with geometrical and/or material properties that differ at least partially from the central portion (3a, 14a), characterised in that the anchoring portion (3b, 3c, 3c', 14c) is connected to the central portion in a connection region, which is spaced from the insulating body, via a wind forming element (3i, 14i), and in that the wind forming element (3i, 14i) abuts the central portion.
  2. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the wind forming element (3i, 14i) abuts the central portion without play and/or in a form-fitting manner and/or with a flat surface.
  3. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the wind forming element (3i, 14i) is a lost wind forming element used in the manufacture of the central portion (3a, 14a).
  4. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the wind forming element (3i, 14i) is arranged between the anchoring portion (3b) and the central portion (3a, 14a) and in that the wind forming element abuts with a flat surface both the central portion and the anchoring portion.
  5. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the wind forming element (3i, 14i) acts upon the loop-shaped central portion (3a, 14a) at least partially in the apex region (3k, 14k) of the loop shape.
  6. Structural element for heat insulation according to at least claim 5,
    characterised in that
    the central portion (3a, 14a) has two loop parts (3g, 14g) extending substantially parallel to one another in the horizontal direction, preferably next to one another and/or above one another, and connected to one another via the apex region (3k, 14k).
  7. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the anchoring portion (3b) of the reinforcement elements (3) consists of a rod-shaped anchoring element (3d), in particular bent into a U-shape, and in that the anchoring element (3d) engages in the loop shape of the central portion (3a).
  8. Structural element for heat insulation according to at least claim 7,
    characterised in that
    the wind forming element (3i, 14i) acts on the U-shaped bent rod-shaped anchoring element (3d) at least partially in its U-apex region.
  9. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the anchoring portion that is connected to the central portion via the wind forming element (3i, 14i) consists of an end anchoring element (3c, 3c', 14c) projecting laterally relative to the central portion (3a, 14a).
  10. Structural element for heat insulation according to at least claim 9,
    characterised in that
    the end anchoring element (3c, 3c', 14c) is connected to, in particular is integral with, the wind forming element (3i).
  11. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the reinforcement elements consist of tensile reinforcement elements (3) and/or of transverse force elements (14).
  12. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the anchoring portion (3b, 14b) of the reinforcing members (3, 14) is connected to and aligned with one or both free ends of the central portion (3a, 14a) which extends substantially horizontally when the structural element (1, 11, 21, 31) is in the installed state.
  13. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the anchoring portion (3b) of the tensile reinforcement elements (3) is made of steel, in particular reinforcing steel, of glass-fibre reinforced plastic material or of concrete.
  14. Structural element for heat insulation according to at least claim 1,
    characterised in that
    the structural element for heat insulation (1, 11, 21, 31) has, in addition to the tensile reinforcement elements (3), compression elements (5) and/or transverse force elements (4, 14).
EP18207451.8A 2018-11-21 2018-11-21 Structural element for heat insulation Active EP3656937B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18207451.8A EP3656937B1 (en) 2018-11-21 2018-11-21 Structural element for heat insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18207451.8A EP3656937B1 (en) 2018-11-21 2018-11-21 Structural element for heat insulation

Publications (3)

Publication Number Publication Date
EP3656937A1 EP3656937A1 (en) 2020-05-27
EP3656937C0 EP3656937C0 (en) 2023-06-07
EP3656937B1 true EP3656937B1 (en) 2023-06-07

Family

ID=64426711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18207451.8A Active EP3656937B1 (en) 2018-11-21 2018-11-21 Structural element for heat insulation

Country Status (1)

Country Link
EP (1) EP3656937B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT510798B1 (en) 2010-11-30 2012-12-15 Avi Alpenlaendische Vered DEVICE FOR CONNECTING STEEL CONCRETE SHEETS TO A WALL OR CEILING CONSTRUCTION OF STEEL CONCRETE
DE202012101574U1 (en) 2012-04-27 2012-06-12 Johann Moissl Device for attaching overhanging attachments to buildings
EP2821558B1 (en) * 2013-07-03 2017-09-20 F.J. Aschwanden AG Component for the thermally insulated connection of two building sections

Also Published As

Publication number Publication date
EP3656937C0 (en) 2023-06-07
EP3656937A1 (en) 2020-05-27

Similar Documents

Publication Publication Date Title
EP1924751B1 (en) Reinforcing body made of fibre-reinforced plastic
EP3272958B1 (en) Structural element for heat insulation
EP1929109B1 (en) Tower construction
EP2486196B1 (en) Method and device for subsequently attaching a protruding outer part to an existing load-bearing building part
EP2610410A2 (en) Construction element for heat insulation
EP2824249B1 (en) Thermally insulating component
EP0499590A1 (en) Insulating connecting element for balcony floors and the use thereoff
EP3336269B1 (en) Structural element for heat insulation
DE4102332A1 (en) Balcony mounting - has fibre-reinforced plastic absorbing tension load and passing through insulating body
EP3656937B1 (en) Structural element for heat insulation
DE102006021781B4 (en) element wall
EP2516761B1 (en) Device for connecting two components separated by a gap and for absorbing transverse forces that occur between the components
EP0947640B1 (en) Reinforcement with high adherence
EP0841439B1 (en) Connector element for cantilever slab
EP1887155B1 (en) Thermal insulation element
WO1985005394A1 (en) Reinforcement element based on steel parts for prestressed concrete constructions and prefabricated prestressed concrete elements
DE19519613C2 (en) Cantilever and / or joint element for reinforced building constructions
EP1528169B1 (en) Assembly for subsequent fixing of construction components on a building part
DE102016113558A1 (en) Component for thermal insulation
DE102016113559A1 (en) Component for thermal insulation
EP1457619A1 (en) Reinforcing element for concrete constructions
EP3444409B1 (en) Structural element for heat insulation
EP3467220B1 (en) Building section and method for producing same
DE19652736B4 (en) Component for thermal insulation
EP0826845B1 (en) Device for taking up tension forces

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20201120

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20221208

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1575415

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230615

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018012294

Country of ref document: DE

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SCHOECK BAUTEILE GMBH

U01 Request for unitary effect filed

Effective date: 20230706

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI

Effective date: 20230719

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230907

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

U20 Renewal fee paid [unitary effect]

Year of fee payment: 6

Effective date: 20230922

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502018012294

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20240308

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231130