EP0773324B1 - Device for the connection and transfer of shearing forces between two building elements separated by a joint - Google Patents

Abstract

The coupling device has a pin (5) which is driven into the end face of one component (1) and a cooperating sleeve (6) driven into the abutting end face of the second component (2). This fits over the projecting end of the pin when the components are brought together. The pin and the sleeve are each surrounded at the component end face by a perpendicular flange disc (8,9). Each has an integral plate (12,13) projecting into the component at right angles.

Description

The present invention relates to a device for Connect and absorb transverse forces from two separated by a joint Components, in particular made of concrete, according to the preamble of the claim 1.

Such devices are used to connect components of the Civil engineering such as roof panels, floor panels, ceilings, walls, beams, Columns, retaining walls or parts thereof with one another or with other components used. In most cases, these components are made of concrete, however, other materials are also conceivable. For this, the sleeve part in one of the components to be connected, the mandrel part in the component to be connected Component arranged such that the mandrel protrudes from the component in question and in the final state penetrates into the sleeve arranged in the other component. As a result, the transverse forces occurring between the components be transmitted. In addition to the possibility of transverse to the longitudinal axis considerable To absorb forces, the mandrel must be freely movable in the sleeve and remain so that the components are under the influence of different temperatures as well as as a result of shrinkage and creep influences expand and contract.

The main problem with such devices for connecting Components, for example made of concrete, are the very high local concrete pressures under the steel mandrel at the joint edge. Here there is a risk of Breaking out of the concrete at the edge of the joint, which poses an acute risk to the Strength of the mandrel construction can occur. To these concrete pressings To keep it within permissible limits would have to be the case with a simple mandrel-sleeve arrangement a large number of thorns for connecting two components and sleeves are arranged. Because the mandrels and sleeves are made of a corrosion-resistant Material, or from a corrosion-protected material Such a solution must be expensive, and the workload is great for laying these mandrels and sleeves.

One way to limit the concrete pressures within permissible limits hold, is that by placing a massive bearing body between the mandrel or the sleeve and the surrounding concrete the occurring Force is transferred to the concrete over a larger surface. Such Bearing bodies are shown, for example, in US-A-2 194 718. Because this one Bearing body shown were stiffened in particular, always occur on the pressure side local high concrete pressures, since the introduction of the force is not optimal is.

Corresponding massive bearing bodies are also in EP-B-0 032 105 shown, the elastically more flexible compared to the mandrel or the sleeve are, which reduces the peak values of the concrete pressure that occur and the lateral forces can be transferred more evenly.

The object of the invention is now the extremely high Pressing the material of the corresponding components under the mandrel and to further reduce the size of the sleeve at the joint edge.

According to the invention, this object is achieved by the in the marking of claim 1 specified features.

This configuration of the holder of the mandrel and the sleeve is a direct relief of the mandrel and the sleeve before entering the Component reached. This relief takes place via the one arranged at the edge of the joint flange - like disc, the force absorbed by this disc in the plate connected to the disc is transferred from and into this surrounding material, for example, is transferred into the concrete.

This arrangement according to the invention is used for power transmission a very large area of the surrounding material of the components, for example of the concrete, which makes it a much larger one Breaking resistance of the material of the components can be achieved.

A simple and inexpensive manufacture of the device will achieved by the flange-like disc and the plate of mandrel and sleeve assembly be formed from one piece, for example by folding a flat profile is reached.

The end region projecting into the component can advantageously of the plate have a bent part, thereby anchoring the plate in the component is improved.

To further improve the anchoring of the end region of the plate facing away from the flange-shaped disk and with the in the corresponding component projecting region of the sleeve or the mandrel connected be what can be achieved, for example, via a web.

An advantageous embodiment of the invention is that a symmetrically arranged with respect to the mandrel or the sleeve to the plate second plate is attached to the flange-shaped disc, which is advantageous Way has the same dimensions as the plate. This can help alternating force directions optimally absorbed on the same component are additionally avoided that the inventive according to a construction site Device can be incorrectly installed, for example, the The plate comes to rest on the "wrong" side of the mandrel or sleeve.

Further advantageous embodiments of the invention result from the further dependent claims.

Embodiments of the device according to the invention are explained in more detail below with reference to the accompanying drawing.

Fig. 1 eine Ansicht auf Dorn und Hülse mit flanschartiger Scheibe und Platte im in die Bauteile eingesetzten Zustand;

Fig. 2 eine Draufsicht auf die in Fig. 1 dargestellten Dorn und Hülse mit Scheibe und Platte;

Fig. 3 eine räumliche Darstellung eines einfachen Aufbaus von flanschartiger Scheibe und Platte für einen Dorn;

Fig. 4 eine räumliche Darstellung von flanschartiger Scheibe und Platte für einen Dorn, wobei die Platte am der flanschförmigen Scheibe abgewandten Endbereich mit dem Dorn verbunden ist;

Fig. 5 bis Fig. 7 je eine räumliche Darstellung von flanschartiger Scheibe und Platte für einen Dorn mit verschiedenen Verankerungselementen;

Fig. 8 eine Ansicht auf in die Bauteile eingesetzte Dorn und Hülse mit symmetrisch zur Platte angeordneten zweiten Platten; und

Fig. 9 eine räumliche Darstellung der in Fig. 8 gezeigten erfindungsgemässen Vorrichtung.

It shows

Figure 1 is a view of mandrel and sleeve with flange-like disc and plate in the state used in the components.

Fig. 2 is a plan view of the mandrel and sleeve shown in Fig. 1 with washer and plate;

Figure 3 is a spatial representation of a simple structure of flange-like disc and plate for a mandrel.

4 shows a spatial representation of the flange-like disk and plate for a mandrel, the plate being connected to the mandrel at the end region facing away from the flange-shaped disk;

5 to 7 each show a spatial representation of a flange-like disk and plate for a mandrel with different anchoring elements;

8 is a view of the mandrel and sleeve inserted into the components with second plates arranged symmetrically to the plate; and

FIG. 9 shows a spatial representation of the device according to the invention shown in FIG. 8.

1 and 2 each show a section of a first component 1 and a second component 2. Components 1 and 2, for example consist of concrete, are separated by a joint 3. in the An end region 4 of a mandrel 5 is embedded in the first component 1. In the second Component 2 is a substantially tubular sleeve 6, in which the other end region 7 of the mandrel 5 penetrates. Through this connection the Both components 1 and 2 can be in the longitudinal axis direction of the mandrel 5 or the sleeve 6 move relative to each other, for example for recording of thermal expansion while being fixed across the mandrel 5 or the sleeve 6 are held.

In each case on the edge regions of the components 1 forming the joint 3 and 2, a flange-like disk 8 and 9 is arranged. These flange-like Disks 8 and 9 are each perpendicular to mandrel 5 and sleeve 7. Die flange-like disc 8 is penetrated by the mandrel 5 and is fixed with it connected, which is done for example by welding. The flange-like Disk 9 is in turn penetrated by the sleeve 6 and is with this also firmly connected.

Assuming that the second component 2 is a support element and the first component 1 is a bridge element, which acts on the concrete of the component 2 reaction force to be transmitted from the sleeve 6 in Fig. 1 in the direction of arrow B, while that to be transferred to the concrete of component 1 Reactive force of the mandrel 5 acts in the direction of arrow A. Accordingly, in Fig. 1 for the sleeve 6, the pressure-loaded side 11 below, while for the mandrel 5 is the pressure loaded side 10 above.

There is one on each of the two flange-like disks 8 and 9 Plate 12 or 13 attached, which protrudes into the respective component 1 or 2. The two plates 12 and 13 are aligned parallel to the mandrel 5 and the sleeve 6. The plates 12 and 13 come in the respective component 1 and 2 respectively lie that they are the pressure-loaded side 10 of the mandrel 5 or the pressure-loaded Side 11 of the sleeve 6 are opposite. The plates 12 and 13 are each spaced from the mandrel 5 or the sleeve 6.

With this arrangement, the flange-like disc 8 Peak load that occurs at the joint-side edge of component 1 is added and advantageously on the concrete of the component via the plate 12 1 transferred. This will cause excessive local concrete pressures of component 1 avoided in particular in the joint-side edge area. In the¶ In the same way, the peak load is transmitted on the joint side Edge of the component 2 on the flange-like disc 9 on the plate 13 and from this to the concrete. This can increase the risk of breakouts Concrete on the edge of the joint can be avoided.

Depending on the dimensions and the size of the forces to be transmitted can mandrel 5 and sleeve 6, flange-like disks 8 and 9, plates 12 and 13 and their distance from the mandrel 5 or sleeve 6 are dimensioned accordingly.

To better anchor the plates 12 and 13 in the concrete Components 1 and 2 each have the end region projecting into component 1 and 2, respectively the plates 12 and 13 a bent part 14 and 15 respectively.

Fig. 3 shows a simple and inexpensive to manufacture embodiment a mandrel 5 with flange-like disc 8 and plate 12, flange-like Disk 8 and plate 12 in a simple manner by a single fold Flat profile is reached.

In the embodiment shown in Fig. 4, the flange is Disk 8 and the plate 12 formed in the same manner as in Fig. 3, wherein the end region of the plate 12 is angled again, as a result of which a web 16 is formed, which, like the flange-like disk 8, is penetrated by the mandrel 5 becomes. With this configuration, a good anchoring is particularly the Plate 12 reached in the concrete of the component.

The embodiments shown in FIGS. 5 to 7 show the same structure as the embodiment of FIG. 3, consisting of flange-like disc 8, plate 12 and mandrel 5, with additional anchoring elements 17 are provided, which in the embodiment according to Fig. 5 are designed as reinforcing bars 18 which are firmly connected to the plate 12 are, in the embodiment according to FIG. 6 from anchoring bolts 19 exist, which are fixed vertically on the plate 12 and in the 7 are formed from reinforcement brackets 20 which are each attached to the plate 12 and to the flange-like disk 8. With These precautions will be better anchored in the concrete of each Component reached.

Of course, all of the embodiments shown in FIGS. 3 to 7 are can also be used in an identical manner for the design of the sleeve 6.

8 and 9 is a further embodiment of the inventive Device shown. As with the previously described Embodiments is a mandrel 5 and a sleeve 6 in the first component 1 or in the second component 2, both of which are separated by a joint 3. The mandrel 5 penetrates into the sleeve 6. Mandrel and sleeve have one flange-like disc 8 or 9, on each of which, as previously described, a plate 12 or 13 is attached. The plate 12 and the plate 13 are each via a web 16 with the rear region of the mandrel 5 or Sleeve 6 connected.

With respect to the mandrel axis or sleeve axis is symmetrical to Plate 12 and 13 each have a second plate 21 and 22 on the flange Disk 8 or 9 attached. The one facing away from the flange-like disk 8 or 9 End region of this second plate 21 or 22 is also over a Web 23 connected to the mandrel 5 or the sleeve 6. The flange-like disc 8, the plate 12, web 16, second plate 21 and web 23 can in simple and cost-effective way through appropriate turns from a flat profile getting produced. The same applies to the arrangement on the sleeve side.

Due to the symmetrical arrangement of a second plate 21 or 22 for plate 12 or 13 the risk is low, especially during assembly work, that the devices according to the invention "wrong" in the corresponding Component are arranged, which is particularly the case with the previous exemplary embodiments could take place, which of course their intended mode of action would be lost.

As can be seen in particular from FIG. 9, the plate 12 and 13 and the second plates 21 and 22 on the lateral edges, respectively a recess 24 on that of the corresponding flange Disc 8 and 9 each have the same distance. In these recesses 24 each come the base webs 25 of an anchoring bracket 26 to lie, which are held by clamping action and in the concrete Condition a firm connection is created.

When creating components from concrete, the sleeve elements attached to the appropriate formwork walls. This is at the flange-like disc 9 attached a fastening device 27, which in Form of a flat profile is formed, with holes, for example Attachment to the formwork wall is equipped with nails. The front one and the rear opening of the sleeve 6 can be closed by covers so that concrete or cement milk is avoided in the inner part the sleeve arrives. The component 2 can then be concreted. After this When the concrete is set, component 2 is stripped. The adjacent one Part 1 will be created in a subsequent stage. According to the Shell the associated mandrels 5 of the mandrel elements into the concreted-in sleeves 6 of the sleeve elements inserted, including the corresponding covers the sleeve can be removed. At the same time there is usually joint insulation created, after which laying the reinforcement and concreting the Component 1 takes place.

So that during concreting in the mandrel elements or No air is trapped in the sleeve members, can be in the plates 12th and 13 and openings 28 can be provided in the second plates 21 and 22.

Depending on the application, as already described above the mandrel elements and the sleeve elements were dimensioned accordingly be. This also applies to the flange-like disks and the plates. Mandrel and sleeve can be practically any matched Have cross section, the mandrel can have a hollow cross section or have a hybrid cross-section of several materials. The choice of materials also takes place depending on the application, being more advantageous Way corrosion-resistant steels are used.

With this device according to the invention, a secure connection can be made and absorption of transverse forces from two components can be achieved. Here, because of the favorable introduction of force, the components can be less Thickness, in particular the plate 12 or 13 can each very be arranged close to the surface of the corresponding component. Because of The greater the break resistance of the concrete can also be the number of the inventive Devices are reduced.

Claims (13)

1. Device for joining together and receiving transverse forces from two structural parts, especially made of concrete, separated by a joint, which each < comprise> a bolt, one of whose two ends is embedded in the first structural part, and one comprises a sheath embedded in the second structural part, in which sheath the other of the two ends of the bolt penetrates, one flange-like disk each being disposed in each case on the bolt and on the sheath in the vicinity of the joint, which disks are directed essentially at a right angle to the bolt and sheath, and which are at least partially embedded in the respective structural parts, characterised in that each flange-like disk (8, 9) is provided with at least one plate (12 or respectively 13), which projects into the respective structural part (1 or respectively 2), and in that the flange-like disk (8; 9) is directed in the respective structural part (1: 2) such that the plate (12: 13) installed thereon is situated in each case on the side of the bolt (5). or respectively of the sheath (6), which is opposite the side under load (10 or respectively 11) of the bolt (5) or respectively of the sheath (6), during the transmission of the reaction forces (A; B) to the corresponding structural part (1; 2).
2. Device according to claim 1, characterised in that the plate (12 or respectively 13) is disposed parallel to the bolt (5), or respectively to the sheath (6), and is spaced apart from the bolt (5), or respectively from the sheath (6).
3. Device according to claim 1 or 2. characterised in that the flange-like disk (8; 9) and the plate (12: 13) consist of a piece forming an angle.
4. Device according to one of the claims 1 to 3. characterised in that the end area of the plate (12: 13) projecting into the structural part (1; 2) has a bent part (14).
5. Device according to one of the claims 1 to 4. characterised in that the end area of the plate (12: 13) remote from the flange-shaped disk (8; 9) is connected via a crosspiece (16) to the area of the bolt (5), or respectively of the sheath (6), projecting in each case into the respective structural part (1: 2).
6. Device according to one of the claim 1 to 5, characterised in that the plate (12; 13) is provided with additional anchoring elements (17).
7. Device according to one of the claims 1 to 6, characterised in that with respect to the bolt (5) or the sheath (6) in relation to the plate (12 or respectively 13) a symmetrically disposed second plate (21 or respectively 22), is installed on the flange-shaped disk (8 or respectively 9), which second plate has essentially the same dimensions as the plate (12 or respectively 13).
8. Device according to claim 7, characterised in that the plate (12; 13), the flange-shaped disk (8; 9) and the second plate (21; 22) are made from one piece by means of bends.
9. Device according to claim 8, characterised in that formed through further bends of the even piece are the crosspieces (16: 23), by means of which the plate (12; 13) and the second plate (21: 22) are connected to the bolt (5), or respectively to the sheath (6). in the end area remote from the flange-shaped disk (8; 9).
10. Device according to one of the claims 7 to 9, characterised in that the plate (12; 13) and the second plate (21: 22) are provided on the lateral edges with one recess (24) each. which have essentially an equally large spacing from the flange-shaped disk (8: 9), in which recesses (24) in each case one of two basic crosspieces (25) of an anchoring bow (26) can be inserted, which basic crosspieces run perpendicular to the plate (12; 13) and to the second plate (21; 22).
11. Device according to one of the claims 1 to 10, characterised in that the plate (12; 13) and. if applicable, the second plate (21: 22) are provided with at least one aperture (28).
12. Device according to one of the claims 1 to 11. characterised in that disposed on the flange-shaped disk (9), which is installed on the sheath (6), is a fastening device (27) in the form of a flat bar
13. Device according to one of the claims 1 to 12, characterised in that at least the sheath end (6) remote from the flange-shaped disk (9) is provided with a covering which can be put on.

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