WO2003006758A1 - Connector element and method for connecting a prefabricated concrete piece with a section of a building - Google Patents
Connector element and method for connecting a prefabricated concrete piece with a section of a building Download PDFInfo
- Publication number
- WO2003006758A1 WO2003006758A1 PCT/EP2002/005430 EP0205430W WO03006758A1 WO 2003006758 A1 WO2003006758 A1 WO 2003006758A1 EP 0205430 W EP0205430 W EP 0205430W WO 03006758 A1 WO03006758 A1 WO 03006758A1
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- WO
- WIPO (PCT)
- Prior art keywords
- connecting element
- section
- extending
- concrete
- cover
- Prior art date
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- 239000004567 concrete Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004873 anchoring Methods 0.000 claims abstract description 60
- 239000011178 precast concrete Substances 0.000 claims description 53
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 210000003323 beak Anatomy 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 238000012546 transfer Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007796 conventional method Methods 0.000 abstract 1
- 239000011150 reinforced concrete Substances 0.000 description 19
- 230000005540 biological transmission Effects 0.000 description 12
- 230000002787 reinforcement Effects 0.000 description 7
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
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- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000002517 constrictor effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
- E04B1/043—Connections specially adapted therefor
Definitions
- the invention relates to a connecting element which can be poured into a prefabricated concrete part and which serves to connect a prefabricated concrete part to a building section, in particular a further precast concrete part, and to a prefabricated concrete part with such a connecting element.
- the invention relates to a cover that can be attached to the connecting element. Furthermore, the invention relates to a method for connecting a prefabricated concrete part to a building section.
- the individual precast concrete parts must be designed using suitable reinforcement in such a way that they meet the requirements with regard to strength. Forces must also be transferred between individual precast concrete parts. This is done essentially by connecting elements, on the one hand a section for connection to a further precast concrete part and on the other hand one or more
- the support foot essentially has a plate which is provided with an opening. Through the opening, a connection to a sleeve can be made by means of a bolt done with internal thread, which is formed in the precast concrete to which the support is to be attached.
- a suitable recess in the concrete of the support makes the area above the opening in the plate accessible in such a way that the anchoring bolt can be tightened. Unavoidable tolerances can be compensated for by an eccentric arrangement of the opening and by a somewhat enlarged design of the opening.
- Such connecting elements which are referred to as support feet, can only transmit tensile forces which act in the direction of the support. Such a connection cannot be used for the transmission of transverse forces.
- wall shoes are known for the connection between a wall provided as a prefabricated concrete part and a building section, for example the foundation or a ceiling slab, as prior-use objects, which are designed in the same way as the column feet described above.
- a comparatively thick and therefore heavy base plate, which is connected to the foundation or the ceiling plate by means of an anchoring bolt, can introduce tensile forces from the wall into the section of the building to which the wall is attached.
- AT 374 531 discloses an anchoring construction that is concreted into a foundation in order to anchor a component to the foundation. Although the anchoring construction introduces shear force into the
- the invention is based on the idea of creating a connecting element that enables a shear-resistant connection between the concrete or reinforcement of the prefabricated part and a building section directly, ie without a large number of components.
- the connecting element according to the invention can be poured into a first precast concrete part and thereby serves to connect the first precast concrete part to a building section, in particular a second precast concrete part.
- This connection is formed, for example, by tightening an anchoring bolt in a connection direction in which tensile forces can be transmitted after tightening.
- the connecting element has at least one element which extends largely in the connecting direction and which defines a space which extends in the connecting direction, is open at the side or is closed. This element is used to form the connection with another section of the building.
- the element or elements that define the space described differ from housing-like elements that are known in the prior art for keeping a mounting space in the vicinity of the connecting element free when casting a connecting element in a prefabricated concrete part.
- the connection to a second prefabricated concrete part or another section of the building is formed directly, for example by placing an anchor plate on an upper edge of this element, on which an
- Anchoring bolt is tightened in such a way that the connection is made with another section of the building. Furthermore, at least one reinforcing steel, in particular welded on the connecting element, is provided for anchoring the connecting forces in the finished part.
- the advantages achieved with the connecting element designed according to the invention consist in particular in that the longitudinally extending element is used directly to establish the connection, for example by placing an anchor plate directly on this element. This means that welded cross struts, bars or the like can be dispensed with.
- the element that extends largely in the connection direction can be designed in a variety of ways.
- two largely straight and flat plates, for example parallel to one another, can be provided in the connecting element according to the invention in such a way that a space is defined between the plates that is open at the side, but can be used advantageously in the manner described below.
- a section of an L, V or U profile can be provided as the element extending in the connecting direction.
- the element is preferably provided with a square tube or rectangular shape as a hollow profile.
- the connecting element according to the invention is preferably combined with an anchoring bolt and an anchor plate which is of a suitable size for being placed across the opening at the upper opening of the hollow profile and resting on the edges of the profile.
- the head of an anchoring bolt or a nut and, if appropriate, an optionally provided washer lie on the anchor plate.
- the anchoring bolt extends through an opening in the anchor plate into the sleeve of that section of the building, for example the foundation or a ceiling plate, with which the prefabricated concrete part provided with the connecting element according to the invention is to be connected.
- the anchoring bolt can also be part of a differently designed anchor in the first component, such as a welded construction. It can be seen that due to the comparatively large opening area of the hollow profile provided according to the invention, the precast concrete part provided with it can be moved comparatively extensively with respect to the part to which it is to be connected, as well as with respect to its cast-in sleeves and accordingly with respect to the anchoring bolt screwed therein and the anchor plate ,
- the reinforcing bars can be welded over a considerable length, namely the length of the hollow profile, to a certain extent along the surface lines of the hollow profile provided according to the invention, so that a reliable connection can be ensured here.
- no additional welding work is required on the connecting element according to the invention even after it has been poured into a precast concrete part.
- the hollow profile according to the invention can be made comparatively thin-walled, and thus leads to a material saving and a more cost-effective design than the comparatively thick ones known in the prior art Baseplates.
- a wall thickness of approximately 8 mm is currently preferred for the hollow profile.
- a hollow profile is preferred for the element extending in the connecting direction, to which at least one reinforcing steel extending in the axial direction of the hollow profile is preferably connected.
- the axial direction of the hollow profile is understood to mean the direction in which the cavity of the hollow profile extends.
- At least one reinforcing steel is attached to the hollow profile in this direction, preferably welded to it.
- the hollow profile is preferably open on its top and bottom and closed on its sides by the corresponding wall sections of the hollow profile.
- the cross-sectional shape of the hollow profile that is provided for the connecting element according to the invention is freely selectable, a hollow profile with a rectangular cross-section is preferred. It is further preferred that at all four corners of the rectangular hollow profile
- the reinforcing bars are provided. This embodiment has proven to be sufficiently stable for all applications.
- the reinforcing bars can be four individual, straight bars.
- the four reinforcing bars can be paired into two, preferably one-piece, U-shaped
- Stirrups can be summarized, which are welded to the hollow profile with the straight legs. Even individual reinforcing bars with hooks or end anchors are possible. Any longitudinal steel rods, smooth, ribbed or threaded, which are used for anchoring and which can form an anchoring mechanism are also conceivable.
- the connecting element is particularly well suited for use in prefabricated trusses or beams if the element extending in the connecting direction has an essentially U-shaped cross section. This enables the finished part to be placed directly on the building section, for example a console or a column head, through the lateral opening of the U-shaped element, so that no horizontal threading or plugging together of the components to be connected is required. At the same time, this ensures reliable transferability of shear forces that dominate normal beams in prefabricated trusses or beams.
- a connecting element which is particularly simple and economical to produce is obtained if the element extending in the connecting direction is formed by two individual elements, each with an L-shaped cross section, which are preferably connected to form a rectangular hollow profile, with reinforcing steel preferably being arranged in the region of the connection. This results in a very rigid connection, the reinforcing bars also serving as connecting rods of the element extending in the longitudinal direction.
- the reinforcing steel or bars are arranged offset inwards relative to the outer circumference of the element extending in the connecting direction. In this way, the space required for the connecting element in the finished part is reduced, which is particularly advantageous in narrow or highly reinforced components and facilitates the placing of the concrete at the edge of the component. The application of force is therefore less close to the edge, which results in more favorable load-bearing behavior in concrete.
- the connecting element according to the invention can be provided without an anchoring bolt and an anchoring plate that is directly combined therewith. In this case, it would have to be connected to a suitable precast element or another building section at the latest
- Anchor bolts and an anchor plate can be combined. However, it is preferred according to the invention that a combination of the connecting element according to the invention, an anchoring bolt, optionally supplemented by a nut, an anchor plate and optionally a washer is provided.
- a plurality of connecting elements can advantageously be combined with one another by connecting them to one another by means of one or more reinforcing steel brackets.
- the combination according to the invention enables a uniform distribution of the connecting and anchoring forces, which is particularly advantageous in the case of components with larger cross sections or high loads is.
- larger component areas can be covered with a single, light unit.
- the connecting reinforcing steel brackets are preferably fixedly attached, in particular welded, to the elements extending in the longitudinal direction. But also initially loosely arranged brackets 34 advantageously stabilize the mechanism in the hardened concrete. Downforce from eccentric application of force through the connecting element 10 itself is absorbed by both loose and welded brackets.
- the invention relates to a prefabricated concrete part with at least one connecting element in one of the embodiments described above.
- the advantages described for the connecting element can also be used for a precast concrete part that is directly provided with it.
- the advantages according to the invention also result for a connection between a prefabricated concrete part which has at least one connecting element according to the invention and another section of a building.
- the connecting element according to the invention proves to be advantageous not only with regard to the simplicity of the construction or the balancing of tolerances, but also with regard to the transferability of transverse forces.
- the anchoring bolt can be used as a transverse force mandrel and can be designed accordingly.
- the possibility of using the anchoring bolt as a shear force mandrel exists in that the cavity of the hollow profile and / or an assembly cavity provided in the vicinity of the connecting element built into a prefabricated concrete element is filled according to the invention with concrete, in particular fast-curing cast concrete. This can work together
- L0 of concrete and anchoring element or bolt can be used for the transmission of transverse forces.
- a further aim provides a cover which has a filling opening for filling concrete and can preferably be fastened to the connecting element in such a way that the cavity covered thereby can be poured with concrete is.
- the liquid poured concrete exerts a certain pressure on the attached cover, so that according to the invention it is to be ensured by suitable measures, which are described in detail below, that the cover remains reliably on the precast concrete part 35, and the cavity can be safely shed.
- the cover according to the invention is preferably used in combination with a connecting element and / or a prefabricated concrete part, the cover represents an independent component which is described in the German utility model no. 201 08 341.8 as the priority document of this application and can in principle also be used in other areas.
- the assembly cavity above and the space provided in the element of the connecting element extending in the connecting direction can be cast in a simple manner after the connection of the prefabricated concrete part to a building section such that the connection can be used for the transmission of transverse forces.
- the potting also acts as a protection against corrosion.
- the cover plate or the formwork element can be fastened to the connecting element in an advantageous manner. This ensures that the
- the cover is designed for a particularly simple and clean casting of the assembly cavity by having at least one defined filling opening.
- the cover according to the invention simplifies this Pouring the assembly cavity considerably, in that it can be attached to the precast concrete element in any way, covering the cavity, and the defined filling opening always gives the possibility of pouring concrete for pouring the assembly cavity.
- the cover according to the invention can be reused as often as required and facilitates the clean formation of precast concrete parts and their connections to one another. Alternatively, the cover can also remain on the cavity which is now filled with solid concrete.
- the cover additionally has a filler spout or a filler beak on which the filler opening is formed.
- the cover according to the invention can be attached reliably and easily by at least one band-shaped or strip-shaped element which can cooperate, for example, with a section of a connecting element provided in a prefabricated concrete part.
- the band or strip-shaped element can be a cable tie, a wire or a sheet metal strip. These extend from a suitable element in the assembly cavity through an opening in the cover and can be tightened or bent on the outside of the cover in such a way that the cover is securely attached to the precast concrete part.
- a cable tie is provided is currently particularly preferred. This can be ensured in a particularly simple manner by the preferred embodiment in which the cover has at least one, for example, double-sided adhesive strip, by means of which the cover can be fastened in the vicinity of the assembly cavity.
- the cover has at least one resilient clip or clip with which the cover can be clamped to the inner edge of the mounting cavity.
- cover according to the invention can basically be seen independently of a connecting element which can be poured into a prefabricated concrete part, it is preferred to provide this in combination with such a connecting element.
- a particularly reliable attachment of the cover can take place in that a fastening section in the form of a thread is provided on the connecting element.
- This can be provided, for example, in an anchor plate of the connecting element, or a nut can be welded to one or more reinforcing bars provided for reinforcement on the connecting element.
- One or more screws can be screwed into the thread or threads in such a way that the cover is securely fastened.
- the cover according to the invention can in principle be provided independently of a prefabricated concrete part, and it can be used several times in order to make it possible to fill the assembly cavities of several precast concrete parts with concrete one after the other.
- the cover according to the invention is preferably provided in combination with a prefabricated concrete part, which offers the advantage that the cover with regard to its Dimensions can be adapted to the dimensions of the mounting cavity of a special precast concrete element in order to always guarantee reliable operation.
- a method for connecting a prefabricated concrete part to a building section is provided.
- the anchoring bolt perpendicular to its axis relative to the element extending in the connecting direction, it is achieved that a targeted transfer of transverse force can take place between the precast concrete part and the building section.
- the process is characterized by comparatively simple process steps.
- the anchoring bolt is fixed by filling a cavity defined in the prefabricated concrete part by the element extending in the connecting direction and / or in the vicinity of the
- Connection element provided mounting cavity with concrete. A particularly rigid and low-slip transverse force connection is achieved in this way. At the same time, the filling ensures corrosion protection of the steel or reinforcement components.
- an advantageous development of the invention can be to fix the anchoring bolt by means of holding elements, preferably wedges and / or set screws. In this way, a stable, but under certain circumstances also releasable connection can be established with simple means.
- Figure 1 is a perspective view of an embodiment of the connecting element according to the invention.
- FIG. 2 shows a perspective view of the connecting element according to the invention in an alternative embodiment
- FIG. 3 shows a cross section through the connecting element according to the invention shown in FIG. 1.
- FIG. 4 shows a perspective view of two interconnected precast concrete parts with the connecting element according to the invention in the installed state
- Fig. 10 each a side view (a) and one
- Fig. 12 each a side view (a) and one
- 13 shows a perspective view of a section of a prefabricated concrete part with the cover to be fastened thereon in a first embodiment
- 14 shows a perspective view of a section of a prefabricated concrete part with the cover to be fastened thereon in a second embodiment
- FIG. 15 shows a perspective view of a section of a prefabricated concrete part with the cover to be fastened thereon in a third embodiment
- Fig. 16 is a perspective view of a portion of a prefabricated concrete part with that to be attached
- FIG. 17 shows a perspective view of a section of a prefabricated concrete part with the cover to be fastened thereon in a fifth embodiment.
- the connecting element 10 which in the present embodiment is designed as a wall shoe, essentially consists of a section of a hollow profile 12 and - in the embodiment shown - four reinforcing bars 14 each provided at the corners of the hollow profile.
- the reinforcing bars 14 are known, ribbed reinforcing bars which, depending on the application, have a length to be determined for the transmission of the forces to be transmitted.
- the reinforcing steels are welded to the corners of the hollow profile 12, which has an approximately rectangular cross section, via fillet welds 16, which can be better seen in FIG. 3. The fillet welds are over most of the length of the Hollow profile 12 formed.
- hollow profile 12 it should also be noted that, depending on the embodiment, it can have a length of, for example, 80, 95, 120 or 135 mm — viewed in the axial direction, that is to say in the direction of extension of the reinforcing steels 14. However, it is understood that that
- Hollow profile can also have other dimensions depending on the application. Dimensions of 120 or 140 mm are currently provided for the longer side of the rectangular cross-section and dimensions of 60 or 70 mm for the shorter side of the rectangular cross-section.
- the hollow profile can be made comparatively thin-walled, with a wall thickness of 8 mm currently being preferred.
- the reinforcing steels preferably have a length of the order of one meter.
- FIG. 2 An alternative embodiment is shown in FIG. 2.
- the respective reinforcing bars 14 can be shortened to a length of approximately 70% of the reinforcing bars 14 according to the embodiment in FIG. 1.
- Reinforcing bars 14 combined into U-shaped brackets.
- the upper, free end of each reinforcing steel 14 shown continues after a largely right-angled turn into a short transverse web, which leads to a further reinforcing steel 14.
- the crossbar merges into this reinforcing steel 14 after a largely right-angled turn.
- These largely U-shaped brackets, the free legs of which, as shown in FIG. 2, are welded to the hollow profile 12, can be formed in one piece by twice bending a suitably long reinforcing steel.
- both the two reinforcing bars 14 arranged on the short side of the hollow section 12 can be combined in this way to form a U-shaped bracket, or that this is done for the two reinforcing bars arranged on a common long side of the hollow section 12, as is the case with is shown in Fig. 2.
- the connection between the reinforcing bars 14 and the hollow profile 12 can be seen. This is preferably done by welding, in particular by fillet welds 16. However, it should be mentioned that the connection can also be made in any other way, provided the required strength is guaranteed.
- the hollow profile is preferably produced by thermoforming and accordingly has rounded corners.
- the connecting element 10 is concreted into a prefabricated concrete part 18, which is provided, for example, as a wall. Accordingly, the connecting element 10 according to the invention is located on the lower edge of the
- Precast concrete part 18 serves to connect the precast concrete part 18 to a further section 20 of the building, which can be a foundation or a ceiling slab. At the required points, 20 sleeves are concreted into this section of the building
- Anchor bolt 22 can be screwed. In the exemplary embodiment shown, it is tightened by a nut 24 which is screwed onto the anchoring bolt 22 and rests on a so-called anchor plate 28 via a washer 26. He can just as well
- Anchoring bolts 22 can be concreted or glued in the building section 20 with an anchor and protrude from the surface in order to then cooperate with the connecting element 10 as intended.
- the anchor plate 28 has a size such that it rests on the upper edge of the hollow profile with a certain protrusion on both sides.
- the anchor plate 28 extends in the direction of the shorter side of the rectangular cross section of the hollow profile 12. This configuration allows the hollow profile and so that the precast concrete 18, in which the connecting element 10 is concreted, move to a large extent with respect to the anchor plate 28 and thus with respect to the building section 20. This allows tolerances to be compensated for without the existing restrictions.
- the top and bottom of the hollow profile 12 will usually be fully open for this purpose. However, it is not excluded and also allows the advantages according to the invention to be realized if the top and bottom are at least partially closed.
- FIG. 4 it can also be seen how an assembly cavity 30 is provided on a prefabricated concrete part 18, which is provided with the connecting element 10 according to the invention, which can be cast after the connection between the prefabricated concrete part 18 with the building section 20, so that the Cavity of the hollow profile is filled, and transverse forces can be transmitted between the anchoring bolt 22 and the concrete filled into the cavity, as will be described in more detail later.
- a certain window 30 is left out in an area above the hollow profile 12, which window is formed in that a styrofoam recess body is arranged in this area when the precast concrete 18 is concreted.
- Recess body can be removed without residue after the concrete has hardened by placing it in a suitable, thin Separating film is welded. Such a recess body is optionally provided together with the connecting element according to the invention. In the assembled state, the recess 30 allows the nut 24 to be tightened using a suitable tool.
- FIGS. 5 to 10 each show a side view and a cross section of an embodiment of the connecting element 10 according to the invention and a combination 36 of the respective connecting elements 10, which are installed in a reinforced concrete prefabricated support 18.
- FIG. 5 shows four connecting elements 10, which are each installed in the corners in the foot area of a reinforced concrete prefabricated support 18. Similar to FIGS. 1 to 4, the connecting elements each have a hollow profile 12, to each of which two reinforced concrete bars 14 are firmly attached via fillet welds 16. The rods 14 are arranged on the outside of the hollow profile 12 such that they are approximately flush with the adjacent side surface of the hollow profile. Therefore can
- Reinforcing steel brackets 34 which each connect four connecting elements to form a connecting unit 36, as can be seen in FIG. 5, lie flush against the outer surface of the hollow profiles 12 and of the reinforced concrete bars 14.
- the reinforcing steel brackets 34 thus enclose the four connecting elements 10 and are firmly connected to them, for example by welding.
- Loose brackets 34 achieve the same load-bearing behavior in the concrete when it has hardened.
- laterally acting output forces are absorbed by the connecting element 10 with an eccentric force application of the reinforcing steel 14 with respect to the anchoring bolt 22.
- connecting unit 36 consisting of several connecting elements 10 favorable carrying behavior achieved with little work or installation effort.
- the arrangement of four connecting elements in the component corners for example instead of a central, correspondingly enlarged connecting element, not only ensures an improved or more uniform distribution of the stresses, but also increases the bending and shear load carrying capacity of the component.
- material costs and weight can be saved compared to a central, correspondingly enlarged connecting element.
- the unit 36 can be installed without any problems, since it is not necessary to provide and align four individual elements 10, but rather the unit 36 as a whole can be installed quickly.
- the arrangement of the assembly opening 30 is also shown by way of example, which is no longer shown in the further figures for the sake of clarity.
- Fig. 6 shows an alternative embodiment, which differs from
- Fig. 5 differs primarily in that the reinforcing bars 14 are arranged offset inwards relative to the outer edges of the reinforced concrete prefabricated column. This ensures that there is more space available outside of the component, which is often required for anchoring the longitudinal reinforcement of the precast reinforced concrete column.
- the increased concrete cover in the overlap area of the anchoring steels with the additional reinforcement reduces the splitting effect and in particular the risk of cracking in the concrete.
- FIG. 7 shows a further alternative embodiment, which differs from FIG. 5 primarily in that the hollow profiles 12 are essentially round. Round tubes are particularly economical to manufacture, so that the overall construction 10 is inexpensive.
- FIG. 8 shows yet another alternative embodiment, which differs from FIG. 5 primarily in that the elements that extend in the longitudinal direction are each formed by two individual elements 12 ′′ each having an L-shaped cross section, which are rectangular Are connected hollow profile, wherein reinforcing bars 14 are arranged in the region of the connection.
- reinforcing bars 14 are arranged in the region of the connection.
- FIG. 9 a shows a further alternative embodiment of the anchoring detail in a side view and in FIG. B in a cross section of the anchoring, in which the connecting elements 10 are arranged in the side surfaces of the concrete support 18 and do not come to rest in the corners.
- the four connecting elements 10 are enclosed by reinforcing steel brackets 34.
- the assembly cavities 30 are located above the hollow profiles 12.
- the arrangement of connecting elements 10 in the side faces of the concrete support 18 instead of in the corners makes these assembly cavities 30 particularly easy to close and cast, in particular in combination with the cover plate according to the invention, which is described in more detail below , Due to the arrangement in the side surfaces, a completely symmetrical arrangement of the anchoring rods 14 on the hollow profile 12 is also possible, which results in output forces from eccentricity of the load
- FIG. 10 shows an arrangement of the connecting elements 10, which is particularly geared towards being able to increasingly absorb a moment with respect to a bending axis of the support 18.
- This arrangement is also advantageous if, for example, there is no access to one on the narrow side of the support 18 Mounting cavity 30 is feasible because this support is adjacent to a wall, for example.
- the symmetrical arrangement of the anchoring rods 14 on the hollow profile 12 is possible.
- FIGS. 11 and 12 each show a side view and a top view of embodiments of the connecting element 10 according to the invention, which are installed in a reinforced concrete precast beam 18.
- the entire connecting element 10 is also installed in the longitudinal direction of the rod-shaped prefabricated concrete part 18. However, since it is a bar, the entire arrangement can be seen horizontally.
- Fig. 11 shows two connecting elements 10, each of which is installed on the underside of a reinforced concrete precast beam 18, which is generally the bending tension side.
- the connecting elements have a piece of a U-profile 12 ', to which four reinforced concrete bars 14 are welded via fillet welds 16 in a manner similar to that described above.
- the U-profiles are installed in the beam 18 such that their opening faces the underside of the beam, so that the inside of the U-profiles 12 'is freely accessible from the outside or below.
- a particularly simple and safe assembly of the reinforced concrete prefabricated beam 18 on the construction site is obtained by simply placing the beam 18 on a support section, for example a bracket of the structure, in the vertical direction, which is indicated by an arrow in FIG.
- FIG. 12 shows an alternative embodiment, which differs from FIG. 11 in that one or more connecting elements 10 are provided which have a closed hollow profile 12.
- the one or more connecting elements 10 can be enclosed in the hollow profile area by brackets 34 if the transfer of lateral force in the beam 18 makes it statically necessary.
- the assembly cavity 30 is then located to the side of the hollow profile 12 and also to the side of the first bracket 34, so that there is no static disadvantage here.
- the reinforcing bars 14 with fillet welds 16 can be arranged asymmetrically, but also also symmetrically.
- the anchoring bolt 22 must either be retrofitted by the
- the connecting element 10 is likewise arranged in the region of the underside of the beam, but at a distance from it. This arrangement is particularly preferred if increased demands are placed on the corrosion and / or fire protection of the reinforced concrete precast beam 18.
- the closed cross section of the hollow profile 12 allows the beam to be more effectively secured against lifting off.
- FIG. 13 shows a lower corner of a prefabricated concrete part 18, for example that of FIG. 1, in which a Mounting cavity 30 is provided in order to be able to tighten a fastening nut 24 of a connecting element 10 in the precast concrete part 18.
- the mounting cavity is an approximately cuboid recess with a rectangular front opening. This opening is to be poured with concrete after the fastening nut 24 has been tightened in order to form a continuous smooth concrete surface overall, together with the remaining surface of the precast concrete element 18.
- the cover 38 In order to facilitate pouring with concrete and to enable this in a clean manner without extensive rework being necessary, the cover 38 according to the invention, largely rectangular and somewhat larger than the opening of the cavity 30, is provided. This is attached essentially in the direction of the arrows A to the opening of the mounting cavity 30 in such a way that it is covered.
- the cover 38 is fastened by means of a fastening screw 40, which is inserted through an opening 42 in the cover 38 and is screwed into a thread 44, which in the case shown is formed in the anchor plate 28 of the connecting element 10.
- the position of the opening 42 is thus matched to that of the thread 44.
- the cover 38 is reliably attached to the precast concrete element, and the pressure of the filled concrete cannot release it from the precast concrete element.
- cover 38 it is also conceivable for the cover 38 to be attached, in particular nailed, to the precast concrete element by means of wire pins.
- respective openings can be provided, for example, in the corners of the cover 38 in order to insert wire pins through the openings into the
- the cover 38 could also be on its surface facing the precast concrete part 18, in particular in its edge areas, can be provided with double-sided adhesive strips in order to attach the cover 38 to the edge areas in the vicinity of the assembly cavity 30.
- the cover 38 has a defined filling opening 48 at the upper edge. In the embodiment shown, this is with a filler nozzle 50, which is in the
- the filler opening 48 remains between the concrete surface and the edge of the filler spout 50, through which the poured concrete can be poured in safely and in a reproducible manner.
- the cover 38 can be made of sheet metal, a rigid plastic or any other suitable material.
- the cover 38 is preferably attached in such a way that it can be removed from the cavity filled with concrete even after it has hardened (cf. in particular FIGS. 13, 14, 16 and 17).
- the connecting element 10 has a plurality of reinforcing bars 14 which, in the embodiment shown, are attached in the four corners of the connecting element 10.
- a nut 54 is welded to each of the two front reinforcing bars 14 in order to enable a sufficiently long screw 40 to be screwed in.
- only one of the nuts 54 can be provided, and the existing nuts can be on other sections of the Connecting element or the precast concrete part 18 as well as by measures other than welding.
- FIG. 15 shows an embodiment of the cover according to the invention, which is held in the assembly cavity by a plurality of resilient clips 56.
- two such clips are provided on each of the four sides of the cover 38, which are located in the vicinity of the corner regions.
- the clips 56 can be provided in one piece on the cover plate 38 made of metal or plastic.
- the brackets initially extend a little outside the edge starting from the cover 38 and then, after forming a kink, to a certain extent roof-shaped again in the direction of the cover. This section, which is angled toward the inside of the cover 38, facilitates the insertion of the clips, which are formed around the entire circumference, into the mounting cavity 30.
- the clips 56 are deflected a little during insertion and then rest resiliently against the inside surface of the mounting cavity 30, so that this too
- the cover 38 is held securely in the mounting cavity.
- Anchoring bolt 22 of the connecting element 10 is looped, and its ends are guided to the outside through an opening 42 formed in the cover 38.
- the cable tie can be tightened by means of a suitable, snap-in fastening element 62, so that the cover 38, held by the anchoring bolt 22 and the cable tie 58, remains securely on the mounting cavity.
- a sheet metal strip 64 is advantageous clamped by means of the fastening nut 24 of the connecting element 10 and extends through an opening 42 formed in this case in the form of a slot in the cover 38.
- the cover is arranged on the mounting cavity 30 in the direction of arrows A, through the sheet metal strip 64. Subsequently, as indicated in the figure, the end of the sheet metal strip protruding to the outside is angled downward, for example, in order to hold the cover 38 securely on the assembly cavity.
- Precast concrete 18 is concreted in such a way that an assembly cavity 30 remains in the area of the connecting element, which is formed, for example, by a removable recess body made of polystyrene. After the concrete has hardened, the precast concrete part 18 is attached to it
- the building section 20 can then represent a wall or a support.
- the anchoring bolt 22 is to be arranged horizontally accordingly.
- the application according to FIG. 11 is particularly advantageous, when the beam is lowered from the top to the bottom when the beam is being installed, and thus the anchoring bolt 22 is inserted into the U-profile 12 ′′ not axially but perpendicular to the longitudinal axis.
- An anchoring bolt 22 is provided in the building section 20, onto which the precast concrete part 18 is placed in such a way that it is located in the connecting element 10, more precisely in its hollow profile 12, in Connection direction extends.
- An anchor plate 28 is then placed on the anchoring bolt 22 in such a way that it rests on the hollow profile 12.
- the nut can be tightened from the outside via the assembly cavity 30 using a conventional tool.
- the interior of the hollow profile 12 and the assembly cavity 30 are filled with concrete in order to fix the anchoring bolt perpendicular to its axis relative to the hollow profile 12.
- a cover 30 is placed flush against the surface of the precast concrete part 18 in order to cover the assembly cavity 30.
- the covers can be held on the precast concrete element in different ways, for example by means of screws 40 which are attached to reinforcing bars 14 of the
- connection elements 10 engage welded nuts 54.
- the cover 38 has a filler nozzle 50, through which the concrete is introduced in such a clean manner that the interior of the hollow profile 12 and the assembly cavity 30 are completely filled.
- Precast reinforced concrete is a positive locking of the anchoring bolt 22 perpendicular to its axis relative to the hollow section 12 or the reinforced concrete part 18 is achieved.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK02748706T DK1387910T3 (en) | 2001-05-17 | 2002-05-16 | Connecting element and method for connecting a concrete component to a building structure |
EP02748706A EP1387910B1 (en) | 2001-05-17 | 2002-05-16 | Connector element and method for connecting a prefabricated concrete piece with a section of a building |
DE50213219T DE50213219D1 (en) | 2001-05-17 | 2002-05-16 | CONNECTING ELEMENT AND METHOD FOR CONNECTING A CONCRETE PREPARED PART WITH A BUILDING SECTION |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20108341.8 | 2001-05-17 | ||
DE20108339.6 | 2001-05-17 | ||
DE20108341U DE20108341U1 (en) | 2001-05-17 | 2001-05-17 | cover |
DE20108339U DE20108339U1 (en) | 2001-05-17 | 2001-05-17 | Connecting element and precast concrete with one connecting element |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003006758A1 true WO2003006758A1 (en) | 2003-01-23 |
Family
ID=26056996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/005430 WO2003006758A1 (en) | 2001-05-17 | 2002-05-16 | Connector element and method for connecting a prefabricated concrete piece with a section of a building |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1387910B1 (en) |
AT (1) | ATE421006T1 (en) |
DE (1) | DE50213219D1 (en) |
DK (1) | DK1387910T3 (en) |
ES (1) | ES2318026T3 (en) |
PL (1) | PL209884B1 (en) |
WO (1) | WO2003006758A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006131396A1 (en) * | 2005-06-10 | 2006-12-14 | D.L.C. S.R.L. | Walls made with prefabricated elements with vertical holes |
GB2442061A (en) * | 2006-09-19 | 2008-03-26 | Waycon Precast Ltd | Pre-cast concrete panel with connector |
ITMI20091317A1 (en) * | 2009-07-24 | 2011-01-25 | B B Bonelli Building S R L | PREFABRICATED WALL ELEMENT |
ITPD20100190A1 (en) * | 2010-06-17 | 2011-12-18 | Aldo Rappo | JUNCTION DEVICE BETWEEN ARMORED PANELS FOR BUILDING, AND BETWEEN PANELS AND FOUNDATIONS OR FLOORS, AND STRUCTURE OF PREFABRICATED ARMORED PANEL RESPONSIBLE FOR USE WITH THIS DEVICE |
WO2020193248A1 (en) * | 2019-03-25 | 2020-10-01 | Progress Holding A.G. | Connection device for frictionally connecting at least two concrete finished parts |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2280080A (en) * | 1939-11-13 | 1942-04-21 | Nicholas A Predan | Concrete insert |
FR1554807A (en) * | 1967-04-14 | 1969-01-24 | ||
AT374531B (en) | 1981-05-21 | 1984-05-10 | Koss Kurt | DEVICE FOR TENSILE CONNECTION OF TWO COMPONENTS |
FR2682141A1 (en) * | 1991-10-04 | 1993-04-09 | Sogea | Method for producing a construction joint between two prefabricated elements of a piece of construction work, a construction joint relating thereto, and piece of construction work including such a joint |
EP0779399A1 (en) * | 1995-12-14 | 1997-06-18 | The Burke Group | Concrete structure having load transferring insert and method for making same |
US6058672A (en) * | 1998-06-03 | 2000-05-09 | Mcclellan; Robert B. | Construction of wall panel and panel structure |
DE20108341U1 (en) | 2001-05-17 | 2001-08-02 | Pfeifer Seil- und Hebetechnik GmbH, 87700 Memmingen | cover |
-
2002
- 2002-05-16 DE DE50213219T patent/DE50213219D1/en not_active Expired - Lifetime
- 2002-05-16 WO PCT/EP2002/005430 patent/WO2003006758A1/en not_active Application Discontinuation
- 2002-05-16 ES ES02748706T patent/ES2318026T3/en not_active Expired - Lifetime
- 2002-05-16 EP EP02748706A patent/EP1387910B1/en not_active Expired - Lifetime
- 2002-05-16 DK DK02748706T patent/DK1387910T3/en active
- 2002-05-16 AT AT02748706T patent/ATE421006T1/en active
- 2002-05-16 PL PL366895A patent/PL209884B1/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2280080A (en) * | 1939-11-13 | 1942-04-21 | Nicholas A Predan | Concrete insert |
FR1554807A (en) * | 1967-04-14 | 1969-01-24 | ||
AT374531B (en) | 1981-05-21 | 1984-05-10 | Koss Kurt | DEVICE FOR TENSILE CONNECTION OF TWO COMPONENTS |
FR2682141A1 (en) * | 1991-10-04 | 1993-04-09 | Sogea | Method for producing a construction joint between two prefabricated elements of a piece of construction work, a construction joint relating thereto, and piece of construction work including such a joint |
EP0779399A1 (en) * | 1995-12-14 | 1997-06-18 | The Burke Group | Concrete structure having load transferring insert and method for making same |
US6058672A (en) * | 1998-06-03 | 2000-05-09 | Mcclellan; Robert B. | Construction of wall panel and panel structure |
DE20108341U1 (en) | 2001-05-17 | 2001-08-02 | Pfeifer Seil- und Hebetechnik GmbH, 87700 Memmingen | cover |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006131396A1 (en) * | 2005-06-10 | 2006-12-14 | D.L.C. S.R.L. | Walls made with prefabricated elements with vertical holes |
GB2442061A (en) * | 2006-09-19 | 2008-03-26 | Waycon Precast Ltd | Pre-cast concrete panel with connector |
GB2442061B (en) * | 2006-09-19 | 2011-03-02 | Waycon Precast Ltd | Precast concrete panels |
ITMI20091317A1 (en) * | 2009-07-24 | 2011-01-25 | B B Bonelli Building S R L | PREFABRICATED WALL ELEMENT |
EP2278083A1 (en) * | 2009-07-24 | 2011-01-26 | B.B. Bonelli Building s.r.l. | Prefabricated wall element |
US8307601B2 (en) | 2009-07-24 | 2012-11-13 | B.B. Bonelli Building S.R.L. | Prefabricated wall element |
ITPD20100190A1 (en) * | 2010-06-17 | 2011-12-18 | Aldo Rappo | JUNCTION DEVICE BETWEEN ARMORED PANELS FOR BUILDING, AND BETWEEN PANELS AND FOUNDATIONS OR FLOORS, AND STRUCTURE OF PREFABRICATED ARMORED PANEL RESPONSIBLE FOR USE WITH THIS DEVICE |
WO2020193248A1 (en) * | 2019-03-25 | 2020-10-01 | Progress Holding A.G. | Connection device for frictionally connecting at least two concrete finished parts |
Also Published As
Publication number | Publication date |
---|---|
PL209884B1 (en) | 2011-11-30 |
DE50213219D1 (en) | 2009-03-05 |
EP1387910B1 (en) | 2009-01-14 |
PL366895A1 (en) | 2005-02-07 |
ATE421006T1 (en) | 2009-01-15 |
DK1387910T3 (en) | 2009-04-14 |
EP1387910A1 (en) | 2004-02-11 |
ES2318026T3 (en) | 2009-05-01 |
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