EP0744508B1 - Device for forming a shear reinforcement for flat slabs - Google Patents

Device for forming a shear reinforcement for flat slabs Download PDF

Info

Publication number
EP0744508B1
EP0744508B1 EP95107129A EP95107129A EP0744508B1 EP 0744508 B1 EP0744508 B1 EP 0744508B1 EP 95107129 A EP95107129 A EP 95107129A EP 95107129 A EP95107129 A EP 95107129A EP 0744508 B1 EP0744508 B1 EP 0744508B1
Authority
EP
European Patent Office
Prior art keywords
shear reinforcement
head
profile
bar
support member
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.)
Expired - Lifetime
Application number
EP95107129A
Other languages
German (de)
French (fr)
Other versions
EP0744508A1 (en
Inventor
Klaus Dipl.-Ing Fröhlich
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.)
Leviat GmbH
Original Assignee
Halfen GmbH and Co KG
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 Halfen GmbH and Co KG filed Critical Halfen GmbH and Co KG
Priority to DE29521530U priority Critical patent/DE29521530U1/en
Priority to EP95107129A priority patent/EP0744508B1/en
Priority to DE59504223T priority patent/DE59504223D1/en
Priority to US08/644,523 priority patent/US6161352A/en
Publication of EP0744508A1 publication Critical patent/EP0744508A1/en
Application granted granted Critical
Publication of EP0744508B1 publication Critical patent/EP0744508B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645Shear reinforcements, e.g. shearheads for floor slabs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups

Definitions

  • the invention relates to a device for forming a Shear reinforcement for flat slabs in the preamble of the claim 1 specified genus.
  • EP 0 495 334 A1 describes shear reinforcement for flat slabs described as several shear reinforcement elements at least approximately perpendicular to the ceiling surface and reinforcing bars extending inside the flat slab having. These rebars are on theirs upper and lower ends each with a conically thickened Head and attached in groups at their upper ends welded on a spacer. This spacer lies on a bending reinforcement and has parallel to Flat ceiling plane angled areas with a predetermined Minimum length, so that the almost vertical course of the reinforcement bars that passed through the bending reinforcement are not lost until the concrete has hardened goes.
  • DE 27 27 159 B2 is a shear reinforcement for on concrete columns superimposed flat ceilings made of steel or prestressed concrete described in which perpendicular to the flat ceiling plane reinforcing bars welded onto a flat steel are.
  • the reinforcement bars can also be used with this version with the flat steel only as a prefabricated unit be used in the formwork of the flat slab, the lattice-shaped bending reinforcement subsequently under simultaneous Thread the reinforcing bars got to.
  • This shear reinforcement also has the rest disadvantages described.
  • WO93 / 12305 describes a reinforcement anchor for the Shear reinforcement of reinforced concrete slabs or beams.
  • This Reinforcement anchor has an elongated anchor shaft disc-shaped anchor heads at its ends.
  • a rebar a reinforcement layer or reinforced concrete slab or the beam is supported by a resilient wire bracket that forms a reinforcement holder.
  • An upper arm leg engages with a holding projection in a holding hole in the face of the anchor head.
  • a side bracket leg of the reinforcement holder encompasses the on the Inner surface of the anchor head and the anchor shaft Rebar.
  • the resilient wire bracket can align the reinforcement anchor not ensure orthogonal to the ceiling level, because the wire bracket can be rotated around the reinforcement bar. in the the other is the rigidity of such a wire bracket not suitable, the direction of the reinforcement anchor exactly to specify.
  • DE 34 11 591 C1 is a shear reinforcement element for Reinforced concrete structures described.
  • This shear reinforcement element has a plurality of reinforcing bar sections made of reinforcing steel, being arranged at both ends Anchors are provided.
  • the rebar sections are attached to a flexible connecting element, to which it is essentially orthogonal to its Longitudinal extension.
  • the connecting element in any case be so flexible that the rebar sections collapsible as well as in relation to their Order in zigzag, circular, rectangular or Like. Can be used.
  • such a flexible connecting element is not suitable the position of the shear reinforcement elements to be determined exactly, neither in their orthogonal alignment to the ceiling level with respect to their distance from each other, so additional measures are required to move the shear reinforcement elements during filling to prevent concrete.
  • DE-28 29 941 A1 is a reinforced concrete connection device described, by means of the finned steel pieces adjacent Building parts are interconnectable.
  • This connection device comprises a support element, which if necessary can be designed as a U-profile.
  • In the bottom of the U-profiles are coupling pieces that are used with the U-profile are to be connected non-positively. These coupling pieces serve to hammer head-like head parts of the concrete rib steel pieces record and thus a non-positive To create connection.
  • the coupling pieces provided on both sides of the support element are on the other side of the support element also a concrete rib steel piece with a hammer head Headboard attached.
  • the U-profile itself serves the creation of a defined cavity, which at Concreting should be left out.
  • the invention has for its object the device to form a shear reinforcement for flat slabs in the To develop the preamble of claim 1, that the connection of the shear reinforcement elements with the Holding element is possible at any time especially when inserted into the formwork, the Distance between two consecutive shear reinforcement elements according to the different requirements is selectable.
  • connection of the reinforcement elements with the holding element easy to produce by positive locking and at least until the final determination of the distances between neighboring reinforcement elements is detachable.
  • the device can be used on the construction site be completed by assembling the parts, whereby the reinforcement elements in the respective needs Way can be arranged.
  • Another advantage is there in that also as a material for the holding elements Plastic can be used, thereby preventing corrosion Protective measures can be omitted.
  • the shear reinforcement elements are in known form essentially the shape of a bolt, one on at least one end of its shaft Head.
  • a head doesn't just make a better one Transfer of forces between reinforcement and concrete, but also serves for attachment to the holding elements.
  • Such one Holding element is a rail on which several shear reinforcement elements are attachable, and preferably made of stainless Material is made, so that the rail is also a protective cover can form for the reinforcement elements.
  • the rail is designed as a C-profile, the lateral edges of the profile the head of the shear reinforcement element reach behind.
  • the head has a partially circular arc shape and flattened on two opposite sides is, the distance between the flats is smaller is the distance between the side edges of the C-profile.
  • the head can be inserted into the rail be that its flattenings in the longitudinal direction of the Rail run, and by rotating the reinforcement element the positive connection is formed around its longitudinal axis made for example in the manner of a bayonet catch. Additional fasteners such as No screws or clamps are required.
  • the rail formed as a U-profile, wherein the head of the shear reinforcement element by means of inwards deformed wall parts of the U-profile is held.
  • the concerned Wall parts are for ease of deformation through slits or notches in the lateral edges of the U-profile limited.
  • the U-profile can also be designed according to claim 2 be that shaped portions in its bottom region are provided, which reach under the edge of the head.
  • the distance between two successive curvatures in the longitudinal direction of the rail should correspond approximately to the diameter of the head, so that possibly a very dense sequence of Shear reinforcement elements are provided on a rail can.
  • the rails are not only loose on the reinforcing bars the top bending reinforcement of the flat slab, but without additional fasteners with the bending reinforcement are connectable, it is particularly useful in the side
  • the holding element 1 is a holding element 1 in the form of a designed as a C-profile rail 10 with arranged thereon Shear reinforcement elements 2 shown.
  • the holding element 1 can made of metallic materials or in a particularly preferred one Way made of plastic.
  • the shear reinforcement elements 2 are designed as bolts 3 with a shaft on the End of a head 4 is formed.
  • the Bolt 3 has a head 4 at each of its ends, so that Shear reinforcement element 2 designed completely the same at both ends is.
  • Fig. 3 embrace lateral edges 5 and 6 of the rail 10 the head 4 of the Thrust reinforcement element 2, so that the head 4 in the rail 10 is held.
  • Fig. 1 are in the longitudinal direction the rail 10 in the profile shape curvatures 8 and 9 arranged, with the curvatures 8 the base of the profile and the bulges 9 to the side edges 5 and 6 are located.
  • These bulges 8 serve for fixing the shear reinforcement elements 2 in the longitudinal direction the rail, for which purpose the head 4 of the bolt 3 corresponding depressions 11 and 12 are located so that the As soon as the bulges fit into the recesses the head 4 has the predetermined position in the rail 10 occupies.
  • the heads 4 of the bolts 3 are essentially circular and with two opposing flats 7 provided, these flattenings 7 parallel to each other run.
  • the width B of the head 4 between the flats 7 is slightly smaller than the distance A between the side Edges 5 and 6 so that the head 4 from the open Side of the C-profile can be used in the rail 10.
  • the head 4 with its flats 7 is aligned in such a way that the flats 7 in the longitudinal direction of the rail 10 run.
  • the bolt 3 rotated about its longitudinal axis so that the arcuate Portions of the head 4 orthogonal to the longitudinal direction of the Rail 10 are directed. In this position the Curvatures 9 in the depressions 11 at the edge of the head 4 and thus lock the shear reinforcement element 2 in the predetermined position on the holding element 1.
  • FIGS. 4 to 6 corresponds essentially to that of FIG. 1 to 3 has already been described, so that for the same parts the reference numerals with the previously described embodiment to match.
  • the arrangement is different the means for fixing the head 4 of the shear reinforcement elements 2, which in the embodiment of FIGS. 4 to 6 not on the side edges 5 and 6 of the rail 10 or are provided on the peripheral edge of the head 4, but in the form of arches 13 on the base of the rail 10 are trained.
  • These arches 13 are located directly next to the circumference of the head 4, so that the shear reinforcement element - seen in the longitudinal direction of the rail 10 - of two arches 13 each and of course secured against displacement by the curvature 8 is. In this way, only the rail 10 is required Protrusions or curvatures 8, 13 are provided.
  • the head 4 are no corresponding measures required.
  • FIGS. 7 to 9 shows a holding element 1, which consists of a bar 15, the Cross-section of a C-profile with side edges 17 and 18 includes.
  • the side edges 17 and 18 are regular Clearances transverse to the longitudinal direction of the rail 15 extending slots 16 arranged in the arranged on the head 4 Grip projections 14 and in this way Locking the shear reinforcement element 2 in the longitudinal direction cause the rail 15.
  • the material of the rail 15 it is preferably plastic, the material has sufficient elasticity to be able to temporary widening that is necessary to the protrusions 14 in the corresponding slots 16 in to go back to the original form.
  • the heads have 4 flats 7, so that the shear reinforcement elements 2 are attached the holding element 1 is possible in the same way as this has been described with reference to FIGS. 1 to 3.
  • a holding element 1 which consists of a Rail 20 with a U-profile and thus perpendicular to Base of the rail 20 extending side edges 21 and 22 exists.
  • the shear reinforcement elements 2 are with Provide heads 24, the end face of which is circular or square can be.
  • the heads 24 With their Bring the end face to the rail 20 and then Wall parts 23 of the lateral edges 21 and 22 deformed inward so that the head 24 is in firm contact hold on the base of the rail 20.
  • the base Arches 19 are provided, which are located directly next to the heads 24 are located and in this way determine their position exactly.
  • the axial length of the wall part to be deformed slots or in the side edges Notches are provided.
  • holes 25 are provided, for example for Implementation of reinforcing bars can serve.
  • the exemplary embodiment according to FIGS. 12 and 13 shows shear reinforcement elements 2 with heads 24, which on a rail 26th are attached with a U-profile.
  • the width is the Rail less than the diameter of the head 24, and that open end of the U-profile is the shear reinforcement elements 2 turned away.
  • Molded are formed in the bottom region of the rail 26 Sections 27 are provided, which are designed so that they reach behind the head 24 of the shear reinforcement element 2 and thus the head 24 against the bottom of the rail 26 to press.
  • In lateral edges 28 and 29 of the rail 26 openings 25 are provided, which are also for receiving of reinforcing bars.
  • FIG. 14 and 15 show an embodiment in which a rail 30 with a U-shaped profile in the bottom area downward curved portions 31 is provided between which openings 32 are formed.
  • the middle range between the downwardly pronounced sections 31 is closed superscript sections 33 angled so that in a sufficiently large opening in the bottom region of the rail 30 for receiving the head 24 of the shear reinforcement element 2 results.
  • the shear reinforcement element 2 is by the Opening 32 inserted from above until the head 24 on the bears pronounced sections 31, whereupon subsequently the superscript sections 33 to their original horizontal form can be traced back like this from the left part of FIG. 14 or the representation in Fig. 15 can be seen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Wire Processing (AREA)
  • Connection Of Plates (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Bildung einer Schubbewehrung für Flachdecken der im Oberbegriff des Anspruches 1 angegebenen Gattung.The invention relates to a device for forming a Shear reinforcement for flat slabs in the preamble of the claim 1 specified genus.

In der EP 0 495 334 A1 ist eine Schubbewehrung für Flachdecken beschrieben, die als Schubbewehrungselemente mehrere mindestens annähernd senkrecht zur Deckenfläche verlaufende und sich im Innern der Flachdecke erstreckende Bewehrungsstäbe aufweist. Diese Bewehrungsstäbe sind an ihren oberen und unteren Enden mit je einem konisch verdickten Kopf versehen und an ihren oberen Enden gruppenweise an einem Distanzhalter angeschweißt. Dieser Distanzhalter liegt auf einer Biegebewehrung auf und hat parallel zur Flachdeckenebene abgewinkelte Bereiche mit einer vorbestimmten Mindestlänge, damit der annähernd senkrechte Verlauf der Bewehrungsstäbe, die durch die Biegebewehrung hindurchgeführt sind, bis zum Aushärten des Betons nicht verloren geht. Aufgrund der Schweißverbindung zwischen Distanzhalter und Bewehrungsstäben können diese Vorrichtungen nur als Einheit in der Schalung angebracht werden, so daß die Abstände der Bewehrungsstäbe an die Maschenweite der gitterförmigen Biegebewehrung angepaßt sein müssen, damit die Bewehrungsstäbe durch die Biegebewehrung hindurch von oben eingefädelt werden können. Auch muß die Länge der Bewehrungsstäbe auf die Höhenlage der Biegebewehrung innerhalb der Schalung abgestimmt sein. Mit dieser Schubbewehrung kann darum nicht unterschiedlichen bautechnischen Anforderungen individuell entsprochen werden. Es ist auch darum eine Vielzahl verschiedener Vorrichtungen zu fertigen und bereitzuhalten, weil die Schubbewehrungselemente, also die Bewehrungsstäbe, je nach Deckenkonstruktion und den Anforderungen an die Belastung in unterschiedlichen Abständen zueinander vorgesehen werden müssen. Infolge der Schweißverbindung sind aber diese Abstände bei jeder einzelnen Schubbewehrung festgelegt.EP 0 495 334 A1 describes shear reinforcement for flat slabs described as several shear reinforcement elements at least approximately perpendicular to the ceiling surface and reinforcing bars extending inside the flat slab having. These rebars are on theirs upper and lower ends each with a conically thickened Head and attached in groups at their upper ends welded on a spacer. This spacer lies on a bending reinforcement and has parallel to Flat ceiling plane angled areas with a predetermined Minimum length, so that the almost vertical course of the reinforcement bars that passed through the bending reinforcement are not lost until the concrete has hardened goes. Due to the welded connection between Spacers and rebars can use these devices can only be installed as a unit in the formwork, so that the distances of the reinforcing bars to the mesh size be adapted to the grid-shaped bending reinforcement so that the reinforcing bars through the bending reinforcement can be threaded through from above. The must also Length of the reinforcement bars to the height of the bending reinforcement be coordinated within the formwork. With this Shear reinforcement can therefore not have different structural Requirements are met individually. It is also why a variety of different devices too manufacture and keep ready because the shear reinforcement elements, i.e. the reinforcement bars, depending on the ceiling construction and the demands on the load in different Distances to each other must be provided. As a result of But these distances are welded to everyone individual shear reinforcement.

In der DE 27 27 159 B2 ist eine Schubbewehrung für auf Betonstützen aufgelagerte Flachdecken aus Stahl oder Spannbeton beschrieben, bei denen senkrecht zur Flachdeckenebene verlaufende Bewehrungsstäbe auf einem Flachstahl aufgeschweißt sind. Auch bei dieser Ausführung können die Bewehrungsstäbe mit dem Flachstahl nur als vorgefertigte Einheit in die Schalung der Flachdecke eingesetzt werden, wobei die gitterförmige Biegebewehrung nachträglich unter gleichzeitigem Hindurchfädeln der Bewehrungsstäbe eingelegt werden muß. Diese Schubbewehrung hat auch im übrigen die schon beschriebenen Nachteile.DE 27 27 159 B2 is a shear reinforcement for on concrete columns superimposed flat ceilings made of steel or prestressed concrete described in which perpendicular to the flat ceiling plane reinforcing bars welded onto a flat steel are. The reinforcement bars can also be used with this version with the flat steel only as a prefabricated unit be used in the formwork of the flat slab, the lattice-shaped bending reinforcement subsequently under simultaneous Thread the reinforcing bars got to. This shear reinforcement also has the rest disadvantages described.

Die WO93/12305 beschreibt einen Bewehrungsanker für die Schubbewehrung von Stahlbetonplatten oder Balken. Dieser Bewehrungsanker weist einen länglichen Ankerschaft mit scheibenförmigen Ankerköpfen an seinen Enden auf. Ein Bewehrungsstab einer Bewehrungslage oder Stahlbetonplatte oder des Balkens wird durch einen federnden Drahtbügel, der einen Bewehrungshalter bildet, gehalten. Ein oberer Bügelschenkel greift mit einem Haltevorsprung in eine Haltebohrung in der Stirnfläche des Ankerkopfes. Ein seitlicher Bügelschenkel des Bewehrungshalters umgreift den an der Innenfläche des Ankerkopfes und am Ankerschaft anliegenden Bewehrungsstab.WO93 / 12305 describes a reinforcement anchor for the Shear reinforcement of reinforced concrete slabs or beams. This Reinforcement anchor has an elongated anchor shaft disc-shaped anchor heads at its ends. A rebar a reinforcement layer or reinforced concrete slab or the beam is supported by a resilient wire bracket that forms a reinforcement holder. An upper arm leg engages with a holding projection in a holding hole in the face of the anchor head. A side bracket leg of the reinforcement holder encompasses the on the Inner surface of the anchor head and the anchor shaft Rebar.

Der federnde Drahtbügel kann eine Ausrichtung des Bewehrungsankers orthogonal zur Deckenebene nicht gewährleisten, da der Drahtbügel um den Bewehrungsstab drehbar ist. Im übrigen ist auch die Steifigkeit eines solchen Drahtbügels nicht geeignet, die Richtung des Bewehrungsankers exakt vorzugeben.The resilient wire bracket can align the reinforcement anchor not ensure orthogonal to the ceiling level, because the wire bracket can be rotated around the reinforcement bar. in the the other is the rigidity of such a wire bracket not suitable, the direction of the reinforcement anchor exactly to specify.

In der DE 34 11 591 C1 ist ein Schubbewehrungselement für Stahlbetonkonstruktionen beschrieben. Dieses Schubbewehrungselement weist eine Mehrzahl von Bewehrungsstababschnitten aus Betonstahl auf, wobei an beiden Enden angeordnete Verankerungen vorgesehen sind. Die Bewehrungsstababschnitte sind an einem flexiblen Verbindungselement befestigt, zu dem sie im wesentlichen orthogonal zu dessen Längserstreckung verlaufen. Dabei muß das Verbindungselement auf jeden Fall derart flexibel sein, daß die Bewehrungsstababschnitte zusammenlegbar sowie in bezug auf ihre Reihung in Zick-Zack-Form, Kreisform, Rechteckform oder dgl. einsetzbar sind.DE 34 11 591 C1 is a shear reinforcement element for Reinforced concrete structures described. This shear reinforcement element has a plurality of reinforcing bar sections made of reinforcing steel, being arranged at both ends Anchors are provided. The rebar sections are attached to a flexible connecting element, to which it is essentially orthogonal to its Longitudinal extension. The connecting element in any case be so flexible that the rebar sections collapsible as well as in relation to their Order in zigzag, circular, rectangular or Like. Can be used.

Ein derartiges flexibles Verbindungselement ist jedoch nicht geeignet, die Position der Schubbewehrungselemente exakt zu bestimmen, weder in ihrer orthogonalen Ausrichtung zur Deckenebene noch bezüglich ihres Abstandes zueinander, so daß zusätzliche Maßnahmen erforderlich sind, um ein Verschieben der Schubbewehrungselemente während des Einfüllens von Beton zu verhindern.However, such a flexible connecting element is not suitable the position of the shear reinforcement elements to be determined exactly, neither in their orthogonal alignment to the ceiling level with respect to their distance from each other, so additional measures are required to move the shear reinforcement elements during filling to prevent concrete.

In der DE-28 29 941 A1 ist eine Stahlbetonanschlußeinrichtung beschrieben, mittels der Rippenstahlstücke aneinandergrenzender Bauwerksteile miteinander verbindbar sind. Diese Anschlußeinrichtung umfaßt ein Tragelement, das gegebenenfalls als U-Profil ausgebildet sein kann. Im Boden des U-Profils sind Kupplungsstücke eingesetzt, die mit dem U-Profil kraftschlüssig zu verbinden sind. Diese Kupplungsstücke dienen dazu, hammerkopfartige Kopfteile der Betonrippenstahlstücke aufzunehmen und somit eine kraftschlüssige Verbindung zu schaffen. Da die Kupplungsstücke jeweils auf beiden Seiten des Tragelementes vorgesehen sind, wird auf der jeweils anderen Seite des Tragelementes ebenfalls ein Betonrippenstahlstück mit einem hammerkopfartigen Kopfteil befestigt. Das U-Profil selbst dient der Schaffung eines definierten Hohlraums, der beim Betonieren ausgespart werden soll.DE-28 29 941 A1 is a reinforced concrete connection device described, by means of the finned steel pieces adjacent Building parts are interconnectable. This connection device comprises a support element, which if necessary can be designed as a U-profile. In the bottom of the U-profiles are coupling pieces that are used with the U-profile are to be connected non-positively. These coupling pieces serve to hammer head-like head parts of the concrete rib steel pieces record and thus a non-positive To create connection. Because the coupling pieces provided on both sides of the support element are on the other side of the support element also a concrete rib steel piece with a hammer head Headboard attached. The U-profile itself serves the creation of a defined cavity, which at Concreting should be left out.

Der Erfindung liegt die Aufgabe zugrunde, die Vorrichtung zur Bildung einer Schubbewehrung für Flachdecken der im Oberbegriff des Anspruchs 1 genannten Gattung so auszubilden, daß die Verbindung der Schubbewehrungselemente mit dem Halteelement zu einem beliebigen Zeitpunkt möglich ist, insbesondere auch beim Einsetzen in die Schalung, wobei der Abstand zwischen zwei aufeinanderfolgenden Schubbewehrungselementen nach den unterschiedlichen Anforderungen wählbar ist. The invention has for its object the device to form a shear reinforcement for flat slabs in the To develop the preamble of claim 1, that the connection of the shear reinforcement elements with the Holding element is possible at any time especially when inserted into the formwork, the Distance between two consecutive shear reinforcement elements according to the different requirements is selectable.

Die Aufgabe wird mit den Merkmalen eines der Ansprüche 1, 2 oder 6 gelöst.The object is achieved with the features of one of claims 1, 2 or 6.

Die wesentlichen Vorteile der Erfindung sind darin zu sehen, daß die Verbindung der Bewehrungselemente mit dem Halteelement mittels Formschluß leicht herzustellen und mindestens bis zur endgültigen Festlegung der Abstände zwischen benachbarten Bewehrungselementen lösbar ist. Dadurch ist eine Anpassung an die individuellen Anforderungen möglich. Insbesondere kann die Vorrichtung auf der Baustelle durch Zusammenfügen der Teile fertiggestellt werden, wobei die Bewehrungselemente in der jeweils bedarfsgerechten Weise angeordnet werden können. Ein weiterer Vorteil besteht darin, daß als Material für die Halteelemente auch Kunststoff verwendet werden kann, wodurch korrosionsverhindernde Schutzmaßnahmen entfallen können.The main advantages of the invention can be seen in that the connection of the reinforcement elements with the holding element easy to produce by positive locking and at least until the final determination of the distances between neighboring reinforcement elements is detachable. Thereby adaptation to individual requirements is possible. In particular, the device can be used on the construction site be completed by assembling the parts, whereby the reinforcement elements in the respective needs Way can be arranged. Another advantage is there in that also as a material for the holding elements Plastic can be used, thereby preventing corrosion Protective measures can be omitted.

Die Schubbewehrungselemente haben in an sich bekannter Weise im wesentlichen die Form eines Bolzens, der an mindestens einem Ende seines Schaftes einen Kopf aufweist. Ein solcher Kopf ergibt nicht nur einen besseren Kräfteübergang zwischen Bewehrung und Beton, sondern dient auch zur Befestigung an den Halteelementen. Ein solches Halteelement ist eine Schiene, an der mehrere Schubbewehrungselemente befestigbar sind, und die vorzugsweise aus nicht rostendem Werkstoff besteht, so daß die Schiene zugleich eine Schutzabdeckung für die Bewehrungselemente bilden kann. Gemäß Anspruch 6 ist die Schiene als C-Profil ausgebildet, wobei die seitlichen Ränder des Profils den Kopf des Schubbewehrungselementes hintergreifen. Hierfür ist es vorteilhaft, daß der Kopf einen teilweise kreisbogenförmigen Umriß hat und an zwei gegenüberliegenden Seiten mit Abflachungen versehen ist, wobei der Abstand zwischen den Abflachungen geringer ist als der Abstand der seitlichen Ränder des C-Profils. Auf diese Weise kann der Kopf so in die Schiene eingesetzt werden, daß seine Abflachungen in Längsrichtung der Schiene verlaufen, und durch Drehung des Bewehrungselementes um seine Längsachse wird die formschlüssige Verbindung beispielsweise nach Art eines Bajonettverschlusses hergestellt. Zusätzliche Befestigungsmittel wie beispielsweise Schrauben oder Klammern sind hierfür nicht erforderlich.The shear reinforcement elements are in known form essentially the shape of a bolt, one on at least one end of its shaft Head. Such a head doesn't just make a better one Transfer of forces between reinforcement and concrete, but also serves for attachment to the holding elements. Such one Holding element is a rail on which several shear reinforcement elements are attachable, and preferably made of stainless Material is made, so that the rail is also a protective cover can form for the reinforcement elements. According to Claim 6, the rail is designed as a C-profile, the lateral edges of the profile the head of the shear reinforcement element reach behind. For this it is advantageous that the head has a partially circular arc shape and flattened on two opposite sides is, the distance between the flats is smaller is the distance between the side edges of the C-profile. In this way, the head can be inserted into the rail be that its flattenings in the longitudinal direction of the Rail run, and by rotating the reinforcement element the positive connection is formed around its longitudinal axis made for example in the manner of a bayonet catch. Additional fasteners such as No screws or clamps are required.

Gemäß Anspruch 1 ist die Schiene als U-Profil ausgebildet, wobei der Kopf des Schubbewehrungselementes mittels nach innen verformter Wandteile des U-Profils gehalten ist. Die betreffenden Wandteile sind zur Erleichterung der Verformung durch Schlitze oder Einkerbungen in seitlichen Rändern des U-Profils begrenzt. Das U-Profil kann gemäß Anspruch 2 auch so ausgeführt sein, daß in seinem Bodenbereich ausgeformte Abschnitte vorgesehen sind, die unter den Rand des Kopfes greifen. Dabei ist es je nach Ausgestaltung möglich, die Schubbewehrungselemente mit ihrem Kopf seitlich zwischen die ausgeformten Abschnitte und die Schiene einzuschieben. Es kann jedoch auch bei einer anderen Ausgestaltung ein Durchstecken des Bolzenschaftes durch eine zwischen den ausgeformten Abschnitten befindliche Öffnung erfolgen, so daß der Kopf auf den ausgeformten Abschnitten liegt.According to claim 1 is the rail formed as a U-profile, wherein the head of the shear reinforcement element by means of inwards deformed wall parts of the U-profile is held. The concerned Wall parts are for ease of deformation through slits or notches in the lateral edges of the U-profile limited. The U-profile can also be designed according to claim 2 be that shaped portions in its bottom region are provided, which reach under the edge of the head. Here Depending on the design, it is possible to use the shear reinforcement elements with her head laterally between the molded ones To insert sections and the rail. It can however, a push-through also in another configuration of the bolt shaft by a molded between the Sections located opening take place so that the head lies on the shaped sections.

Zusätzlich zu der Möglichkeit, den Kopf des Schubbewehrungselementes in dem Profil der Schiene einzuklemmen, besteht noch die Möglichkeit, das Profil mit nach innen gerichteten Nasen oder Wölbungen zu versehen, die vorzugsweise eine regelmäßige Anordnung aufweisen. Durch diese Nasen oder Wölbungen ist auch bei nicht ausreichender Klemmkraft zwischen Kopf und Profil eine Lagesicherung insbesondere gegen Längsverschiebung des Kopfes in der Schiene gegeben. Bei entsprechender Gestaltung wirken die Wölbungen bzw. Nasen als Rasten, wobei die Rastverbindung ein gewolltes Lösen des Schubbewehrungselementes von der Schiene, beispielsweise um eine Korrektur bezüglich der Positionierung durchzuführen, ermöglicht. Für eine solche Rastverbindung kann an der Stirnseite des Kopfes eine Vertiefung vorgesehen sein, in die eine an der Grundfläche des Profils angeordnete Wölbung greift. Der Abstand zweier aufeinanderfolgender Wölbungen in Längsrichtung der Schiene sollte etwa dem Durchmesser des Kopfes entsprechen, so daß gegebenenfalls eine sehr dichte Folge von Schubbewehrungselementen an einer Schiene vorgesehen werden kann. Eine andere Ausgestaltung zur Sicherung des Kopfes gegen Verschiebung in Längsrichtung der Schiene besteht darin, daß in den seitlichen Rändern Ausnehmungen vorgesehen sind, in die am Kopf des Bolzens angeformte Vorsprünge greifen.In addition to the possibility of the head of the shear reinforcement element pinching in the profile of the rail still the possibility of having the profile facing inwards To provide noses or arches, which are preferred have a regular arrangement. Through this Noses or arches are also insufficient Clamping force between the head and the profile is particularly important against longitudinal displacement of the head in the rail given. With an appropriate design, the bulges work or lugs as notches, the latching connection deliberate release of the shear reinforcement element from the Rail, for example to correct for the Carrying out positioning enables. For one Snap connection can be a recess on the front of the head be provided in the one on the base of the Profiled curvature grips. The distance between two successive curvatures in the longitudinal direction of the rail should correspond approximately to the diameter of the head, so that possibly a very dense sequence of Shear reinforcement elements are provided on a rail can. Another design for securing the head against displacement in the longitudinal direction of the rail in that recesses are provided in the lateral edges are in the projections formed on the head of the bolt to grab.

Damit die Schienen nicht nur lose auf den Bewehrungsstäben der oberen Biegebewehrung der Flachdecke aufliegen, sondern ohne zusätzliche Befestigungsmittel mit der Biegebewehrung verbindbar sind, ist es besonders zweckmäßig, in den seitlichen Rändern des U-Profils Öffnungen vorzusehen, die beispielsweise in regelmäßigen Abständen angeordnet sein können, durch die die Bewehrungsstäbe der Biegebewehrung hindurchgeführt werden. So that the rails are not only loose on the reinforcing bars the top bending reinforcement of the flat slab, but without additional fasteners with the bending reinforcement are connectable, it is particularly useful in the side To provide openings around the edges of the U-profile for example, be arranged at regular intervals through which the reinforcing bars of the bending reinforcement be passed through.

Ausführungsbeispiele der erfindungsgemäßen Vorrichtung sind nachstehend anhand der Zeichnung näher erläutert. In der Zeichnung zeigt:

Fig. 1
einen Längsschnitt durch eine Schiene mit Schubbewehrungselementen,
Fig. 2
die Ansicht in Richtung des Pfeiles II in Fig. 1,
Fig. 3
einen Schnitt entlang der Linie III-III in Fig. 1,
Fig. 4 bis 6
eine Ausführungsvariante zu Fig. 1 bis 3,
Fig. 7 bis 9
eine weitere Ausführungsvariante zu Fig. 1 bis 3,
Fig. 10
eine Seitenansicht einer Schiene mit Schubbewehrungselementen,
Fig. 11
einen Schnitt entlang der Linie XI-XI in Fig. 10,
Fig. 12 und 13
eine Ausführungsvariante zu Fig. 10 und 11,
Fig. 14 und 15
eine weitere Ausführungsvariante zu Fig. 10 und 11.
Embodiments of the device according to the invention are explained below with reference to the drawing. The drawing shows:
Fig. 1
a longitudinal section through a rail with shear reinforcement elements,
Fig. 2
the view in the direction of arrow II in Fig. 1,
Fig. 3
2 shows a section along the line III-III in FIG. 1,
4 to 6
an embodiment of Fig. 1 to 3,
7 to 9
a further embodiment variant to FIGS. 1 to 3,
Fig. 10
a side view of a rail with shear reinforcement elements,
Fig. 11
10 shows a section along the line XI-XI in FIG. 10,
12 and 13
10 and 11,
14 and 15
a further embodiment variant to FIGS. 10 and 11.

In den Fig. 1 bis 3 ist ein Halteelement 1 in Form einer als C-Profil ausgeführten Schiene 10 mit daran angeordneten Schubbewehrungselementen 2 gezeigt. Das Halteelement 1 kann aus metallischen Werkstoffen oder in besonders bevorzugter Weise aus Kunststoff bestehen. Die Schubbewehrungselemente 2 sind als Bolzen 3 mit einem Schaft ausgeführt, an dessen Ende ein Kopf 4 angeformt ist. Vorzugsweise besitzt der Bolzen 3 an jedem seiner Enden einen Kopf 4, so daß das Schubbewehrungselement 2 an beiden Enden völlig gleich gestaltet ist. Wie aus Fig. 3 ersichtlich ist, umgreifen seitliche Ränder 5 und 6 der Schiene 10 den Kopf 4 des Schubbewehrungselementes 2, so daß der Kopf 4 in der Schiene 10 gehalten ist.1 to 3 is a holding element 1 in the form of a designed as a C-profile rail 10 with arranged thereon Shear reinforcement elements 2 shown. The holding element 1 can made of metallic materials or in a particularly preferred one Way made of plastic. The shear reinforcement elements 2 are designed as bolts 3 with a shaft on the End of a head 4 is formed. Preferably, the Bolt 3 has a head 4 at each of its ends, so that Shear reinforcement element 2 designed completely the same at both ends is. As can be seen from Fig. 3, embrace lateral edges 5 and 6 of the rail 10 the head 4 of the Thrust reinforcement element 2, so that the head 4 in the rail 10 is held.

Wie insbesondere in Fig. 1 dargestellt ist, sind in Längsrichtung der Schiene 10 in die Profilform gerichtete Wölbungen 8 und 9 angeordnet, wobei sich die Wölbungen 8 an der Grundfläche des Profils und die Wölbungen 9 an den seitlichen Rändern 5 und 6 befinden. Diese Wölbungen 8 dienen zur Fixierung der Schubbewehrungselemente 2 in Längsrichtung der Schiene, wozu sich an dem Kopf 4 des Bolzens 3 entsprechende Vertiefungen 11 und 12 befinden, so daß die Wölbungen formschlüssig in die Vertiefungen greifen, sobald der Kopf 4 die vorbestimmte Lage in der Schiene 10 einnimmt. Wie insbesondere aus Fig. 2 deutlich wird, sind die Köpfe 4 der Bolzen 3 im wesentlichen kreisförmig ausgeführt und mit zwei gegenüberliegenden Abflachungen 7 versehen, wobei diese Abflachungen 7 parallel zueinander verlaufen.As shown in particular in Fig. 1, are in the longitudinal direction the rail 10 in the profile shape curvatures 8 and 9 arranged, with the curvatures 8 the base of the profile and the bulges 9 to the side edges 5 and 6 are located. These bulges 8 serve for fixing the shear reinforcement elements 2 in the longitudinal direction the rail, for which purpose the head 4 of the bolt 3 corresponding depressions 11 and 12 are located so that the As soon as the bulges fit into the recesses the head 4 has the predetermined position in the rail 10 occupies. As is particularly clear from Fig. 2, are the heads 4 of the bolts 3 are essentially circular and with two opposing flats 7 provided, these flattenings 7 parallel to each other run.

Die Breite B des Kopfes 4 zwischen den Abflachungen 7 ist geringfügig kleiner als der Abstand A zwischen den seitlichen Rändern 5 und 6, so daß der Kopf 4 von der offenen Seite des C-Profils in die Schiene 10 einsetzbar ist. Hierzu wird der Kopf 4 mit seinen Abflachungen 7 derart ausgerichtet, daß die Abflachungen 7 in Längsrichtung der Schiene 10 verlaufen. Sobald der Kopf 4 mit seiner Stirnfläche an der Grundfläche der Schiene 10 anliegt, wird der Bolzen 3 um seine Längsachse gedreht, so daß die bogenförmigen Abschnitte des Kopfes 4 orthogonal zur Längsrichtung der Schiene 10 gerichtet sind. In dieser Stellung greifen die Wölbungen 9 in die Vertiefungen 11 am Rand des Kopfes 4 ein und verrasten damit das Schubbewehrungselement 2 in der vorbestimmten Stellung an dem Halteelement 1.The width B of the head 4 between the flats 7 is slightly smaller than the distance A between the side Edges 5 and 6 so that the head 4 from the open Side of the C-profile can be used in the rail 10. For this the head 4 with its flats 7 is aligned in such a way that the flats 7 in the longitudinal direction of the rail 10 run. As soon as the head 4 with its end face bears on the base of the rail 10, the bolt 3 rotated about its longitudinal axis so that the arcuate Portions of the head 4 orthogonal to the longitudinal direction of the Rail 10 are directed. In this position the Curvatures 9 in the depressions 11 at the edge of the head 4 and thus lock the shear reinforcement element 2 in the predetermined position on the holding element 1.

Das in den Fig. 4 bis 6 beschriebene Ausführungsbeispiel entspricht im wesentlichen demjenigen, das zu den Fig. 1 bis 3 bereits beschrieben wurde, so daß für gleiche Teile die Bezugszeichen mit dem zuvor beschriebenen Ausführungsbeispiel übereinstimmen. Unterschiedlich ist die Anordnung der Mittel zur Fixierung des Kopfes 4 der Schubbewehrungselemente 2, die im Ausführungsbeispiel der Fig. 4 bis 6 nicht an den seitlichen Rändern 5 und 6 der Schiene 10 bzw. am Umfangsrand des Kopfes 4 vorgesehen sind, sondern in Form von Wölbungen 13 an der Grundfläche der Schiene 10 ausgebildet sind. Diese Wölbungen 13 befinden sich direkt neben dem Kreisumfang des Kopfes 4, so daß das Schubbewehrungselement - in Längsrichtung der Schiene 10 gesehen - von jeweils zwei Wölbungen 13 und zusätzlich selbstverständlich durch die Wölbung 8 gegen Verschiebung gesichert ist. Auf diese Weise braucht lediglich die Schiene 10 mit Vorsprüngen bzw. Wölbungen 8, 13 versehen werden. Am Umfangsrand des Kopfes 4 sind keine entsprechenden Maßnahmen erforderlich.The embodiment described in FIGS. 4 to 6 corresponds essentially to that of FIG. 1 to 3 has already been described, so that for the same parts the reference numerals with the previously described embodiment to match. The arrangement is different the means for fixing the head 4 of the shear reinforcement elements 2, which in the embodiment of FIGS. 4 to 6 not on the side edges 5 and 6 of the rail 10 or are provided on the peripheral edge of the head 4, but in the form of arches 13 on the base of the rail 10 are trained. These arches 13 are located directly next to the circumference of the head 4, so that the shear reinforcement element - seen in the longitudinal direction of the rail 10 - of two arches 13 each and of course secured against displacement by the curvature 8 is. In this way, only the rail 10 is required Protrusions or curvatures 8, 13 are provided. On the perimeter the head 4 are no corresponding measures required.

Die in Fig. 7 bis 9 dargestellte Ausführungsvariante zeigt ein Halteelement 1, das aus einer Leiste 15 besteht, deren Querschnitt ein C-Profil mit seitlichen Rändern 17 und 18 umfaßt. In den seitlichen Rändern 17 und 18 sind in regelmäßigen Abständen quer zur Längsrichtung der Schiene 15 verlaufende Schlitze 16 angeordnet, in die am Kopf 4 angeordnete Vorsprünge 14 greifen und auf diese Weise eine Arretierung des Schubbewehrungselementes 2 in Längsrichtung der Schiene 15 bewirken. Bei dem Material der Schiene 15 handelt es sich vorzugsweise um Kunststoff, wobei das Material eine ausreichende Elastizität besitzt, um nach dem vorübergehenden Aufweiten, das notwendig ist, um die Vorsprünge 14 in die entsprechenden Schlitze 16 zu bringen, in die Ausgangsform zurückzugehen. Auch bei dem Ausführungsbeispiel der Fig. 7 bis 9 besitzen die Köpfe 4 Abflachungen 7, damit eine Befestigung der Schubbewehrungselemente 2 an dem Halteelement 1 auf die gleiche Weise möglich ist, wie dies zu den Fig. 1 bis 3 beschrieben wurde.The embodiment shown in FIGS. 7 to 9 shows a holding element 1, which consists of a bar 15, the Cross-section of a C-profile with side edges 17 and 18 includes. In the side edges 17 and 18 are regular Clearances transverse to the longitudinal direction of the rail 15 extending slots 16 arranged in the arranged on the head 4 Grip projections 14 and in this way Locking the shear reinforcement element 2 in the longitudinal direction cause the rail 15. In the material of the rail 15 it is preferably plastic, the material has sufficient elasticity to be able to temporary widening that is necessary to the protrusions 14 in the corresponding slots 16 in to go back to the original form. Even in the embodiment 7 to 9, the heads have 4 flats 7, so that the shear reinforcement elements 2 are attached the holding element 1 is possible in the same way as this has been described with reference to FIGS. 1 to 3.

Die Fig. 10 und 11 zeigen ein Halteelement 1, das aus einer Schiene 20 mit einem U-Profil und somit rechtwinklig zur Grundfläche der Schiene 20 verlaufenden seitlichen Rändern 21 und 22 besteht. Die Schubbewehrungselemente 2 sind mit Köpfen 24 versehen, deren Stirnfläche kreisförmig oder quadratisch sein kann. Zum Befestigen der Schubbewehrungselemente 2 an dem Halteelement 1 werden die Köpfe 24 mit ihrer Stirnfläche zur Anlage an der Schiene 20 gebracht und anschließend Wandteile 23 der seitlichen Ränder 21 und 22 nach innen verformt, so daß sie den Kopf 24 in fester Anlage an der Grundfläche der Schiene 20 halten. Um die Schubbewehrungselemente 2 gegen Verschieben in Längsrichtung der Schiene 20 zu sichern, sind an der Grundfläche Wölbungen 19 vorgesehen, die sich direkt neben den Köpfen 24 befinden und auf diese Weise deren Position exakt festlegen. Um die axiale Länge des zu verformenden Wandteils festzulegen, können in den seitlichen Rändern Schlitze oder Kerben vorgesehen werden. In den seitlichen Rändern 21 und 22 sind Bohrungen 25 vorgesehen, die beispielsweise zur Durchführung von Bewehrungsstäben dienen können.10 and 11 show a holding element 1, which consists of a Rail 20 with a U-profile and thus perpendicular to Base of the rail 20 extending side edges 21 and 22 exists. The shear reinforcement elements 2 are with Provide heads 24, the end face of which is circular or square can be. For fastening the shear reinforcement elements 2 on the holding element 1, the heads 24 with their Bring the end face to the rail 20 and then Wall parts 23 of the lateral edges 21 and 22 deformed inward so that the head 24 is in firm contact hold on the base of the rail 20. To the Shear reinforcement elements 2 against displacement in the longitudinal direction to secure the rail 20 are on the base Arches 19 are provided, which are located directly next to the heads 24 are located and in this way determine their position exactly. The axial length of the wall part to be deformed slots or in the side edges Notches are provided. In the side edges 21 and 22 holes 25 are provided, for example for Implementation of reinforcing bars can serve.

Das Ausführungsbeispiel gemäß Fig. 12 und 13 zeigt Schubbewehrungselemente 2 mit Köpfen 24, die an einer Schiene 26 mit U-Profil befestigt sind. Dabei ist die Breite der Schiene geringer als der Durchmesser des Kopfes 24, und das offene Ende des U-Profils ist den Schubbewehrungselementen 2 abgewandt. Im Bodenbereich der Schiene 26 sind ausgeformte Abschnitte 27 vorgesehen, die so gestaltet sind, daß sie hinter den Kopf 24 des Schubbewehrungselementes 2 greifen und somit den Kopf 24 gegen den Boden der Schiene 26 drücken. In seitlichen Rändern 28 und 29 der Schiene 26 sind Öffnungen 25 vorgesehen, die ebenfalls zur Aufnahme von Bewehrungsstäben dienen.The exemplary embodiment according to FIGS. 12 and 13 shows shear reinforcement elements 2 with heads 24, which on a rail 26th are attached with a U-profile. The width is the Rail less than the diameter of the head 24, and that open end of the U-profile is the shear reinforcement elements 2 turned away. Molded are formed in the bottom region of the rail 26 Sections 27 are provided, which are designed so that they reach behind the head 24 of the shear reinforcement element 2 and thus the head 24 against the bottom of the rail 26 to press. In lateral edges 28 and 29 of the rail 26 openings 25 are provided, which are also for receiving of reinforcing bars.

Die Fig. 14 und 15 zeigen eine Ausführungsform, bei der eine Schiene 30 mit U-förmigem Profil im Bodenbereich mit nach unten gewölbten Abschnitten 31 versehen ist, zwischen denen Öffnungen 32 gebildet sind. Der mittlere Bereich zwischen den nach unten ausgeprägten Abschnitten 31 ist zu hochgestellten Abschnitten 33 abgewinkelt, so daß sich in dem Bodenbereich der Schiene 30 eine ausreichend große Öffnung zur Aufnahme des Kopfes 24 des Schubbewehrungselementes 2 ergibt. Das Schubbewehrungselement 2 wird durch die Öffnung 32 von oben eingeführt bis der Kopf 24 auf den nach unten ausgeprägten Abschnitten 31 aufliegt, woraufhin anschließend die hochgestellten Abschnitte 33 in ihre ursprüngliche waagrechte Form zurückgeführt werden, wie dies aus dem linken Teil der Fig. 14 oder der Darstellung in Fig. 15 ersichtlich ist.14 and 15 show an embodiment in which a rail 30 with a U-shaped profile in the bottom area downward curved portions 31 is provided between which openings 32 are formed. The middle range between the downwardly pronounced sections 31 is closed superscript sections 33 angled so that in a sufficiently large opening in the bottom region of the rail 30 for receiving the head 24 of the shear reinforcement element 2 results. The shear reinforcement element 2 is by the Opening 32 inserted from above until the head 24 on the bears pronounced sections 31, whereupon subsequently the superscript sections 33 to their original horizontal form can be traced back like this from the left part of FIG. 14 or the representation in Fig. 15 can be seen.

Claims (11)

  1. Device for forming a shear reinforcement for flat slabs, with at least one elongated shear reinforcement member (2), which is to be positioned with its longitudinal axis at an angle to the plane of the slab, the shear reinforcement member (2) being essentially in the form of a bolt (3), which comprises a head (4, 24) at at least one end of its shaft and the shear reinforcement member (2) is to be connected in form-locking manner to a support member (1, 40) lying at right angles to its longitudinal axis, characterised in that the support member (1) is a bar (10, 15, 20, 30, 50), to which a plurality of shear reinforcement members (2) can be fastened and the bolt (3) and the support member (1; 40) can be fitted together, the bar (20) being constructed as a U-profile and the head (24) of the shear reinforcement member (2) being held by means of inwardly deformed wall parts of the side edges (21, 22) of the U-profile.
  2. Device for forming a shear reinforcement for flat slabs, with at least one elongated shear reinforcement member (2), which is to be positioned with its longitudinal axis at an angle to the plane of the slab, the shear reinforcement member (2) having essentially the shape of a bolt (3), which comprises a head (4, 24) at at least one end of its shaft, and the shear reinforcement member (2) is to be connected in a form-locking manner to a support member (1, 40) lying at right angles to its longitudinal axis, characterised in that the support member (1) is a bar (10, 15, 20, 30, 50), to which a plurality of shear reinforcement members (2) can be fastened and the bolts (3) and the support member (1; 40) can be fitted together, the bar (26, 30) being constructed as a U-profile and shaped sections (27, 31) being provided in the base region of the U-profile, which sections engage below the edge of the head (24), in which case surfaces are provided in particular on the U-profile, against which the end face of the head (24) bears.
  3. Device according to Claim 1, characterised in that the wall parts (23) provided for deformation are defined by slots or notches in the side edges (21, 22) of the U-profile.
  4. Device according to Claim 2, characterised in that the surfaces for the abutment of the head (24) are formed by sections (33) at the U-profile of the bar (30) deformed after the assembly of the shear reinforcement member (2).
  5. Device according to one of the preceding Claims, characterised in that openings (25), preferably at regular intervals, are provided in the side edges (21, 22, 28, 29) of the U-profile of the bar (20, 26).
  6. Device for forming a shear reinforcement for flat slabs, with at least one elongated shear reinforcement member (2), which is to be positioned with its longitudinal axis at an angle to the plane of the slab, the shear reinforcement member (2) having essentially the shape of a bolt (3), which comprises a head (4, 24) at at least one end of its shaft, and the shear reinforcement member (2) is to be connected in a form-locking manner to a support member (1, 40) lying at right angles to its longitudinal axis, characterised in that the support member (1) is a bar (10, 15, 20, 30, 50), to which a plurality of shear reinforcement members (2) may be fastened and the bolts (3) and the support member (1; 40) can be fitted together and the bar (10, 15) is constructed as a C-profile, the side edges (5, 6, 127, 18) of the profile engaging behind the head (4) of the shear reinforcement member (2).
  7. Device according to Claim 6, characterised in that the head (4) has a contour partly in the form of a circular arc and is provided on two opposite sides with flat portions (7), the width (B) between the flat portions (7) being less than the distance (A) between the side edges (5, 6; 17, 18) of the C-profile.
  8. Device according to one of Claims 6 or 7, characterised in that provided in the side edges (17, 18) are recesses (16), in which engage projections (14) integrally formed on the head (4) of the bolt (3).
  9. Device according to one of Claims 1 or 6, characterised in that the bar (10; 20) is provided with lugs or bulges (8, 9, 13, 19) directed into the profile, the lugs or bulges (8, 9, 13, 19) preferably having a regular arrangement.
  10. Device according to Claim 9, characterised in that provided on the end face of the head (4) is a recess (12), in which a lug or bulge (8) located on the bottom surface of the profile of the bar (10) engages.
  11. Device according to one of the preceding Claims, characterised in that the bar consists of non-corroding material, for example of synthetic material.
EP95107129A 1995-05-11 1995-05-11 Device for forming a shear reinforcement for flat slabs Expired - Lifetime EP0744508B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE29521530U DE29521530U1 (en) 1995-05-11 1995-05-11 Device for forming shear reinforcement for flat slabs
EP95107129A EP0744508B1 (en) 1995-05-11 1995-05-11 Device for forming a shear reinforcement for flat slabs
DE59504223T DE59504223D1 (en) 1995-05-11 1995-05-11 Device for forming shear reinforcement for flat slabs
US08/644,523 US6161352A (en) 1995-05-11 1996-05-10 Shear reinforcement system for a slab floor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95107129A EP0744508B1 (en) 1995-05-11 1995-05-11 Device for forming a shear reinforcement for flat slabs

Publications (2)

Publication Number Publication Date
EP0744508A1 EP0744508A1 (en) 1996-11-27
EP0744508B1 true EP0744508B1 (en) 1998-11-11

Family

ID=8219245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107129A Expired - Lifetime EP0744508B1 (en) 1995-05-11 1995-05-11 Device for forming a shear reinforcement for flat slabs

Country Status (3)

Country Link
US (1) US6161352A (en)
EP (1) EP0744508B1 (en)
DE (2) DE29521530U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH696204A5 (en) 2003-02-10 2007-02-15 Ankaba Ag Apparatus for shear reinforcement.

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023695A1 (en) * 1995-12-21 1997-07-03 Deha Ankersysteme Gmbh & Co. Kg Dowel support for bent-up reinforcement bars and process for the production thereof
DE29612053U1 (en) * 1996-07-11 1996-10-31 Eisenhofer, André, Dipl.-Ing., 86150 Augsburg Reinforcement device
DE59805834D1 (en) 1997-07-26 2002-11-07 Deha Ankersysteme Dowel bar for shear reinforcement
DE19813565A1 (en) * 1998-03-27 1999-09-30 Schoeck Bauteile Gmbh Thrust reinforcement dowel, particularly for force transmission in the connecting area of supports to flat ceilings or floor plates
DE29805713U1 (en) 1998-03-28 1998-08-20 Rojek, Richard, Prof. Dr.-Ing., 86316 Friedberg Device for the sliding arrangement of components
DE29809739U1 (en) * 1998-06-03 1999-10-21 Schoeck Bauteile Gmbh Shear reinforcement component
US6672015B2 (en) * 1999-02-25 2004-01-06 Menard Soltraitement Concrete pile made of such a concrete and method for drilling a hole adapted for receiving the improved concrete pile in a weak ground
DE29903737U1 (en) 1999-03-02 1999-08-12 Schöck Bauteile GmbH, 76534 Baden-Baden Shear reinforcement component
US6820390B2 (en) * 2001-02-06 2004-11-23 Todd M. Schulze Weldment plate spacer support
KR100423757B1 (en) * 2001-05-04 2004-03-22 원대연 Prestressed composite truss girder and construction method of the same
US8495846B2 (en) * 2003-07-30 2013-07-30 Leonid G. Bravinski Formwork assembly for fabricating composite structures including floor and roof structures
DE102004056036A1 (en) * 2004-11-19 2006-06-01 Deutsche Kahneisen Gesellschaft Mbh Fastening element for anchor provided with an anchor head
DE102005008748A1 (en) * 2005-02-25 2006-08-31 Schöck Bauteile GmbH Structural reinforcement element for force transfer at flat roofs and floors has several cap bolts fixed in concrete or plastics profiled rail forming the connector element
US20100050565A1 (en) * 2008-08-29 2010-03-04 Venkata Rangarao Vemuri Flat strip slab system
EP2488708B1 (en) * 2009-10-14 2013-07-03 Hy-Ten Limited Component for use in the production of a concrete floor plate
FI124471B (en) * 2011-05-23 2014-09-15 Peikko Group Oy Shear reinforcement system for casting into tiles
EP3048211B1 (en) 2015-01-24 2020-11-18 HALFEN GmbH Thrust reinforcement device
US10161096B2 (en) * 2016-05-31 2018-12-25 Soletanche Freyssinet Ground reinforcing device
JP6792775B2 (en) * 2017-09-19 2020-12-02 株式会社小野工業所 Reinforcing bar
US11959270B1 (en) 2021-04-16 2024-04-16 Morse Distribution, Inc. Stud rail systems and methods for use in reinforced concrete structures
DE202023101939U1 (en) 2023-04-17 2023-06-30 Reinhold Elsässer Device for inserting into panel-shaped elements

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE198603C (en) *
FR356657A (en) * 1905-07-18 1905-12-06 John French Golding Metal framework intended for use in concrete parts and for other uses
US928475A (en) * 1908-08-03 1909-07-20 John T Simpson Means for reinforcing concrete constructions.
US1090545A (en) * 1910-01-27 1914-03-17 Frank N Kneas Hanger-socket.
US1245414A (en) * 1917-04-12 1917-11-06 Widmer Engineering Company Metal insert for concrete ceilings.
US1502766A (en) * 1921-02-05 1924-07-29 Concrete Steel Company Insert for concrete construction
US1726286A (en) * 1924-06-04 1929-08-27 George A Bennet Holder for anchor bolts and the like
US1761800A (en) * 1928-03-28 1930-06-03 Carl G Preis Concrete anchor
US1922479A (en) * 1929-07-10 1933-08-15 Pliny N Joslin Adjustable concrete insert
US1898668A (en) * 1931-06-25 1933-02-21 Mcclintic Marshall Corp Floor construction or the like
US3283458A (en) * 1958-02-25 1966-11-08 Gersovitz Benjamin Shear reinforcement in reinforced concrete floor systems
AT279123B (en) * 1963-12-17 1970-02-25 Hufnagl Walter Means for connecting at least two longitudinal bars
DE1484236A1 (en) * 1964-03-24 1969-01-09 Hufnagl Walter Connecting element for reinforcement bars
US3841046A (en) * 1973-02-21 1974-10-15 Ind Services Inc Wall form
US3982363A (en) * 1974-10-18 1976-09-28 Ddk Investments, Ltd. Frangible insert
DE2727159C3 (en) 1977-06-16 1980-05-08 7000 Stuttgart Shear reinforcement for flat slabs made of reinforced or prestressed concrete on concrete supports
DE2829941C3 (en) * 1978-07-05 1981-03-12 Deutsche Kahneisen Gesellschaft West Gmbh, 1000 Berlin Device for connecting steel reinforcement
KR840007929A (en) * 1983-03-28 1984-12-11 클라우드 메이어 Fixing method of concrete structure and supporting sleeve and connecting sleeve for it
DE3411591C1 (en) * 1984-03-29 1985-06-13 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Shear reinforcement element for reinforced concrete structures
DE3423284A1 (en) * 1984-06-23 1986-01-02 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Process for installing steel connecting plates into a prefabricated reinforced concrete compound unit, and spring element for carrying out the process
US4888922A (en) * 1988-08-15 1989-12-26 Richmond Screw Anchor Co., Inc. Setting hoist anchors in poured concrete structures
US5174910A (en) * 1990-09-20 1992-12-29 Pita Enrique A Mold for forming pilot anchor holes in concrete
CH683545A5 (en) 1991-01-18 1994-03-31 Thomas Moesch Shear reinforcement for flat slabs.
DE4140468A1 (en) * 1991-12-09 1993-06-17 Deha Ankersysteme REINFORCEMENT ANCHOR WITH REINFORCING BRACKET FOR THE REINFORCING REINFORCEMENT OF STEEL CONCRETE PANELS OR BEAMS
DE4315900C1 (en) * 1993-05-12 1994-07-21 Andrae Hans Peter Reinforcement anchors for concrete slabs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH696204A5 (en) 2003-02-10 2007-02-15 Ankaba Ag Apparatus for shear reinforcement.

Also Published As

Publication number Publication date
DE59504223D1 (en) 1998-12-17
US6161352A (en) 2000-12-19
EP0744508A1 (en) 1996-11-27
DE29521530U1 (en) 1997-07-10

Similar Documents

Publication Publication Date Title
EP0744508B1 (en) Device for forming a shear reinforcement for flat slabs
CH674864A5 (en)
DE3736553A1 (en) WALL CONNECTOR
EP0275033B1 (en) Anchoring apparatus
EP0443441B1 (en) Fence
DE3224986C2 (en) Device for attaching assembly parts to a concrete wall
EP0410079B1 (en) Connecting casing for linked concrete slabs
AT390816B (en) TENSIONING ELEMENT FOR THE POWERFUL CONNECTION OF PRECAST CONCRETE PARTS, IN PARTICULAR FINISHED CEILING PANELS
EP1601842B1 (en) Reinforcing elements and reinforced concrete or prestressed concrete parts produced by means of the same
EP0927796B1 (en) Form panel and system
EP0108222A2 (en) Supporting structure
CH678204A5 (en)
EP0410335B1 (en) Reinforcing member for the formation of support frames in tunnelling
EP4208613A1 (en) Frame formwork element and frame formwork system, and use of a strip in a frame formwork system
EP0353560A1 (en) Spacer for concrete reinforcements
EP0412445A2 (en) Rail to be embedded in concrete girders or same
DE9016795U1 (en) Fastening clamp for roof tiles or panels and tile covering of a building roof equipped with fastening clamps
EP3921490A1 (en) Mounting system for mounting an anchoring device and method for mounting an anchoring device on a partial construction made of concrete
DE102018106675A1 (en) An element
DE4315900C1 (en) Reinforcement anchors for concrete slabs
EP0947641B1 (en) Apparatus for slidingly positioning building elements
DE2314191A1 (en) FORMWORK FOR A CORNER CAP OF A BRIDGE, METHOD FOR MANUFACTURING THE CORNER CAP AND BRIDGE PROVIDED WITH THIS CORNER CAP
CH703670B1 (en) Abschalplattenhalter.
EP0121101B1 (en) Roof structure for covering
DE1559530A1 (en) Wall construction, especially reinforcement unit

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

17P Request for examination filed

Effective date: 19951201

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB IT LI NL

17Q First examination report despatched

Effective date: 19970130

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HALFEN GMBH & CO. KOMMANDITGESELLSCHAFT

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB IT LI NL

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

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19981111

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59504223

Country of ref document: DE

Date of ref document: 19981217

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN P. & C. S.N.C.

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990218

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

Ref country code: LI

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

Effective date: 19990531

Ref country code: CH

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

Effective date: 19990531

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
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: HALFEN GMBH

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20140521

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20140527

Year of fee payment: 20

Ref country code: NL

Payment date: 20140521

Year of fee payment: 20

Ref country code: DE

Payment date: 20140521

Year of fee payment: 20

Ref country code: IT

Payment date: 20140529

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20140523

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59504223

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59504223

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V4

Effective date: 20150511

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20150510

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20150510