WO2003008737A2

WO2003008737A2 - Device for joining precast concrete parts

Info

Publication number: WO2003008737A2
Application number: PCT/EP2002/007802
Authority: WO
Inventors: Matthias Kintscher
Original assignee: Pfeifer Holding Gmbh & Co. Kg
Priority date: 2001-07-18
Filing date: 2002-07-12
Publication date: 2003-01-30
Also published as: EP1407096B1; PL365207A1; EP1407096A2; DE50202728D1; PL212321B1; DK1407096T3; ATE292722T1; DE20111702U1; WO2003008737A3; ES2238596T3

Abstract

The invention relates to a device for joining precast concrete parts, consisting of at least one cable loop. One end of said loop is anchored in the precast concrete part and the other end, which is provided in the form of a loop, co-operates with a holding device which is arranged in or on the precast concrete part. This enables the cable loop to be elastically bent in a perpendicular manner during the production process and to be released for joining purposes. According to the invention, at least one fixing element holds the joining cable loop.

Description

"Device for joining precast concrete parts"

The invention relates to a device for connecting prefabricated concrete parts consisting of at least one rope loop arranged at one end, which is anchored at one end in the prefabricated concrete part and the other, loop-like end cooperates with a holding device inserted into the prefabricated concrete part or arranged on the prefabricated concrete part, around the Bend the cable loop elastically approximately at a right angle during the manufacture of the precast concrete element and release it for the bond.

Such devices are also referred to as storage devices. Safekeeping devices for safekeeping at least one Elastically deformable holder and devices for connecting prefabricated concrete parts, on which at least one rope loop is provided, which is anchored at one end in the prefabricated concrete part and the other end of which forms the rope loop, are known. Such a storage device is known for example from DE-B2-16 84 254. The storage device disclosed in this document has a storage box with a component-side opening, a stop and at least one convex wall, the rope loop to be stored entering the storage box through the opening from the component to be held and following the convex effect of the storage box through the Stop is held in position.

EP 0 819 203 B1 discloses a device for storing at least one elastically deformable holder and a method for concreting in sections using elastically deformable holders as a concreting end. With this solution, the wire rope loop is fixed in a molded part which has positioning means. These positioning means are locked at an angle-stiffness with respect to the bending plane, the bending stop counteracting bending forces occurring at least parallel to the surface of the component to be held.

From WO 98/03751 a device for connecting prefabricated concrete parts is known. The solution is given in that the holding part is designed as an elongated box with a substantially uniform cross section, the essentially flat box bottom having holding elements which hold the bent rope loop in the box, but allow the rope loop to disengage from the holding position.

After moving the precast concrete parts, the rope loop should at the same time offer the possibility of parts to connect to the face. To do this, it must be ensured that the rope loop is in the use position (erected) and remains in this position even when connecting to other components. For this purpose, the rope loop may have to interact with the rope loop of another component or with connecting reinforcement. It may also be necessary to arrange additional reinforcement between at least two rope loops before casting with concrete or other pouring agents. In order to meet static requirements, it must be ensured that the rope loops remain in the upright position both before and during the casting and especially afterwards. If this is not guaranteed, later damage or structural damage cannot be ruled out, since the static requirements are not met due to the lack of perfect overlap of the rope loops. The rope loop can also be a differently designed, for example flexible, connecting element. In the present description, the term belt loop is used predominantly for this purpose.

The solutions known to date from the prior art ensure that the rope loops are held in an angled state during the manufacture of the precast concrete part or during transport to the construction site. A solution for maintaining or maintaining the erected position after setting up the precast concrete part for connection to other components is not known.

It is therefore an object of the invention to provide a solution which ensures that the rope loop or a flexible connecting element is held securely in the opened position after the concrete part has been erected.

According to the invention, this object is achieved by the features specified in claim 1. Advantageous further training are the subject of the subclaims.

With the invention, a device for connecting prefabricated concrete parts, consisting of at least one rope loop arranged at one end, which is anchored at one end in the prefabricated concrete part, and the other, loop-like end with a inserted into the prefabricated concrete part or on the holding device arranged in the prefabricated concrete part cooperates to elastically bend the rope loop during the manufacture of the precast element and to release it for the bond, which is characterized in that the rope loop is arranged in the upright position of the bond by at least one fixing means. With the help of this arrangement it is ensured that after the rope loop has been brought into the upright position, it is actually held in this position, since the fixing means of the rope loop prevents bending back. The design of the fixing means of the rope loop can be quite different, it only has to be ensured that the fixing means keeps the rope loop in the upright position both after the assembly of the precast concrete element and during the grouting of the space between two precast concrete elements. According to the invention, several variants of the design of the fixing agent are proposed. The fixing means can be supported on or in the holding device or can be arranged in this. For example, provision is made to provide the fixing means accordingly in the production of the holding device. However, it is also possible for the fixing means to be implemented separately from the design of the holding device. The fixative is held, for example, by a recess in the precast concrete part. An embodiment of the fixation means is also part of the invention, in which, for example, the fixation means serves to hold two overlapping rope loops together in their upright position To connect position, for example by a clip or a rope loop or wire knot and so on.

In an advantageous development of the device according to the invention, it is provided that the fixing means is indicated by at least one notch in the holding device, which is arranged on or above the inlet opening of the rope loop in the holding device such that at least one side of the rope loop in the upright Position engages in this notch.

This notch is advantageously formed on the angled upper frame part (C-profile-like) of the holding device. This ensures that, in addition to being fixed in the notch, a certain leverage is required to remove the rope loop from this notch.

According to a further aspect of the securing device according to the invention, it is provided that the fixing means is indicated by at least one part arranged in the holding device, which is arranged on or in the side part of the U- (or C-) -shaped holding device in such a way that after the Alignment of the rope loop in the erected position is foldable, erectable or bendable and thereby blocks the rope loop in this position.

A development of the device according to the invention provides that guides are formed in the side parts of the holding device, into which a stop can be introduced as a fixing means, the rope loop being guaranteed in the upright position by the interaction of the guide and stop. The stop can be provided as a sheet metal or as a round material. The guides correspond to the shape of the chosen fixation element. It has also been found that it is advantageous if the holding device is designed in such a way that, after the rope loop has been erected, a stop or a shaped plate can be inserted into the holding device (which is open at the top) in a force-fitting and / or positive manner, the stop or the shaped plate then blocks the rope loop in the upright position. It is particularly advantageous if this stop is made of a material with resilient properties, so that the stop is simply clamped into the holding device from above when the rope loop has been brought into the upright position.

As a further possibility for forming a stop, it is provided that it is simply clipped onto the upper frame part of the holding device, which is open at the top, by means of known fastening means, such as clip elements.

According to a development of the device according to the invention, it is provided that a nose with a predetermined bending point is arranged on the holding device in such a way that it is arranged on the angled upper frame part of the holding device in such a way that the nose blocks the rope loop in the upright position when folded down.

It is further provided that a clamp as a fixing means connects at least two overlapping cable lugs of precast concrete parts arranged adjacent to one another after the assembly thereof in a non-positive and / or positive manner. It is advantageous if this clamp is clamped onto the cable loops in the upright position as a fixing means for fixing the upright position of the cable loops. This measure ensures that the two rope loops are connected to one another in a statically secure manner both during the casting process and after the casting compound has set. Equal to a bracket is one here (Wire) loop and the like.

In a preferred embodiment of the invention it is provided that a retaining clip is provided as the fixing means, which can be clamped into an opening or recess of the prefabricated concrete part or into a gap between the precast concrete parts and thus defines the upright position of the rope loop. In this embodiment of the invention, the fixing means is not supported on the holding device, but is fastened in the gap, the recess or a bore and so on by suitable means, for example by corresponding clamping flanks. The simple clamping arrangement offers the advantage of very quick assembly. Another variant according to the invention provides that a threaded sleeve is embedded in the precast concrete part, into which the holding clamp is then screwed. Although the preparation effort for ^'the precast concrete part is larger so that it can accommodate the fixing means, however, this proposal according to the invention realized a safe, immovable position of the fixation means and thereby a secure fixation of the rope loop in the upright position.

The device according to the invention can be designed in a wide variety of materials. It is only necessary to ensure that the material is resistant to concrete in liquid and set form. For example, the holding device can be made of sheet metal, plastic or even concrete.

In a development of the solution according to the invention it is provided that the holding device is designed such that it can accommodate two or more rope loops. For this purpose, a corresponding number of entry openings and a corresponding number of fixing means are formed on the holding device. This embodiment is both Formation of the holding device in box form as well as possible when the holding device is designed in rail form.

With the previously described options for executing the device according to the invention, it is ensured that the rope loop or a flexible connecting element arranged in place of the rope loop is held in the upright position in this position after the assembly of the concrete part and the erection of the rope loop or the connecting element. The static requirements to be met are thus met. There is certainty that the rope loop remains in this upright position even during the casting of the space between at least two precast concrete parts.

The invention is explained in more detail below with the aid of exemplary embodiments and drawings. Show it:

Fig. 1 shows a plan view of a device with an embodiment of the solution according to the invention;

FIG. 2 shows a perspective illustration of the embodiment according to FIG. 1;

3a, b and c are perspective views of further embodiments of the invention,

4a and b further embodiments of the invention,

Fig. 5 shows a detail of a junction of two precast concrete parts according to the invention and 6a, b and c in a perspective view (Fig. 6a), and in two sectional drawings (Fig. 6b, c) a further embodiment of the invention.

1 shows a plan view of a device for connecting prefabricated concrete parts, only the part of the holding device 1 which is located above the inlet opening 4 for the cable loop 2 into the holding device 1 being shown here. Reference number 5 denotes the upper frame part of the holding device, which is box-shaped in the embodiment shown in FIG. 1. The upper frame part 5 is angled towards the inside in the direction of the open U. The reference symbol 3 denotes the notch, which is arranged at or above the inlet opening 4 for the cable loop 2 in the holding device 1. the rope loop 2 engages in this notch 3 when it is in the upright position; in FIG. 1 an embodiment with two notches 3 is shown.

FIG. 2 shows a perspective illustration of the embodiment according to FIG. 1. In this embodiment, the holding device 1 is shown in a box-shaped configuration. The rope loop 2 is in the upright position, in which it engages in the notch 3 at least with one side of the loop. In an enlarged detail, to the right of the illustration according to FIG. 2, it is shown how the rope loop 2 engages in the notch 3.

3a shows a perspective view of a further embodiment of the invention. In this embodiment, the means for fixing is indicated by at least one part 6 arranged in the holding device. This part 6 is included for example as a section of the side part 7 cut out there on three sides in such a way that it can be opened by bending and thereby blocks the rope loop 2 in the upright position. Of course, it is possible to form this part 6 from both side parts 7 of the holding device 1. For a better representation, an enlarged section is shown in FIG. 3b, which illustrates how part 6 fixes the rope loop 2. 3c shows an embodiment of the holding device 1, in which guides 8 are formed in or on the side parts 7 of the holding device 1, into which a stop 9 can be inserted as a fixing element when the cable loop 2 has been brought into the upright position. The rope loop 2 is blocked by the interaction of the guide 8 and the stop 9.

4a shows an embodiment of the device according to the invention, in which the holding device 1 is designed such that, after the rope loop 2 has been erected, a further stop 10 can be inserted into the holding device 1, which is open at the top. The further stop 10 can be designed as a clamp, as a sheet metal or securing strip. It is also possible to provide the further stop 10 with clamping lugs which produce a positive or non-positive connection with the upper frame part 5. It is also possible to provide the stop 10 with fastening devices, such as clip connections, so that the further stop 10 is finally clipped onto the upper frame part 5 after the rope loop 2 has been erected. 4b shows a section of the holding device 1 according to the invention. Here, the side part 7 is shown with an upper frame part 5 arranged thereon, on which a nose 11 is arranged. This nose 11 has a predetermined bending position advantageously at the junction with the upper frame part 5. After the rope loop 2 has been erected, this nose 11 is bent downward, so that the rope loop 2 is blocked in the upright position. 5 shows a section of a connection point between two precast concrete parts with overlapping rope loops 2, which are held in the upright position by means of a clamp 12 as a fixing means.

Similar to the embodiment according to FIG. 5, FIGS. 6a, b and c show an embodiment of the fixing means in such a way that it is not supported on the holding device 1, 1 '. The fixing means is realized here as a holding clip 13 which is clamped in the gap 14 between two prefabricated concrete parts 15, 15 '. For this purpose, the holding clamp 13 is bent essentially in a U-shape and has corresponding ribs on the legs at its open end in order to allow better clawing in or on the precast concrete part.

The arrangement of the cable loops 2, 2 'through which the reinforcement bar 16 is guided vertically can be clearly seen in the three-dimensional view according to FIG. 6a. The retaining clip 13 has a curve that surrounds the reinforcing bar 16. Thus, the holding clip 13 also serves to guide or orient the reinforcing bar 16 and ensures its position in the finished cast compound. Similar configurations are also possible with differently designed fixing means which are fastened, for example, in a recess in the precast concrete part or in threaded sleeves which are arranged in the precast concrete part. Of course, it is also possible to arrange a fixing means on the holding device 1, 1 ', which holds or guides the reinforcing bar 16 in a manner similar to that shown in FIG. 6a and at the same time holds the cable loops 2, 2' in the upright position.

The claims now filed with the application and later are attempts to formulate without prejudice to achieve further protection. The back-references given in the dependent claims indicate the further development of the subject matter of the main claim through the features of the respective sub-claim. However, these are not to be understood as a waiver of the achievement of an independent, objective protection for the features of the related subclaims.

Features that were previously only disclosed in the description can be claimed in the course of the method as being of importance for the invention, for example to distinguish them from the prior art.

Claims

Claims:

1.Device for the connection of precast concrete elements, consisting of at least one rope loop, which is anchored at one end in the precast concrete element and the other, loop-like end cooperates with a holding device inserted into the precast concrete element or arranged on the precast element, in order to secure the rope loop during the manufacture of the Pre-bend the precast concrete element approximately at right angles, elastically and release it for the assembly, characterized in that at least one fixing means holds the rope loop (2) in the upright position of the assembly.

2. Device according to claim 1, characterized in that the fixing means is arranged on or in the holding device.

3. Device according to one or both of the preceding claims, characterized in that the fixing means is formed by at least one notch (3) in the holding device (1) which at or above the inlet opening (4) of the rope loop (2) in the Holding device (1) is arranged such that at least one side of the rope loop (2) engages in this notch (3) in the upright position.

Device according to one or more of the preceding claims, characterized in that the notch (3) is formed on the angled upper frame part (5) of the holding device (1).

Device according to one or more of the preceding claims, characterized in that the fixing means is indicated by at least one part (6) arranged in the holding device (1), which is located on or in the side part (7) of the U-shaped holding device ( 1) is arranged such that it can be opened, aligned or bent out after the rope loop (2) has been erected, thereby holding or positioning the rope loop (2) in the erected position.

Device according to one or more of the preceding claims, characterized in that guides (8). are formed in the side parts (7) of the holding device (1), into which a stop (9) can be introduced as a fixing means, and that the rope loop (2) holds in the upright position by the interaction of the guide (8) and stop (9) or positioned.

Device according to one or more of the preceding claims, characterized in that the holding device (1) is designed such that, after the rope loop (2) has been erected, a stop (10) can be inserted in the holding device (1) in a non-positive and / or positive manner , the stop (10) then holding or positioning the rope loop (2) in the upright position.

8. The device according to one or more of the preceding claims, characterized in that the stop (10) is clamped or clipped into the holding device (1) after the rope loop is in the upright position and is then blocked by the stop (10) ,

9. The device according to one or more of the preceding claims, characterized in that the stop (10). is provided by a shaped sheet.

10. The device according to one or more of the preceding claims, characterized in that the stop (10) is provided by round material.

11. The device according to one or more of the preceding claims, characterized in that on the holding device (1) a nose (11) is arranged with a predetermined bending seam, such that it is formed on the angled upper frame part (5) of the holding device (1) is that it blocks the rope loop (2) in the upright position when folded down.

12. The device according to one or more of the preceding claims, characterized in that a clip (12) is provided as a fixing means, which is clamped onto adjacent overlapping rope loops (2) by optionally several devices, to determine the upright position of the rope loops (2).

13. The device according to one or more of the preceding claims, characterized in that the holding device (1) is made of sheet metal, plastic or concrete.

14. The device according to one or more of the preceding claims, characterized in that the holding device (1) is box-shaped or U-shaped or C-shaped.

15. The device according to one or more of the preceding claims, characterized in that the holding device (1) is designed rail-like.

16. The device according to one or more of the preceding claims, characterized in that the holding device (1) is designed such that it is suitable for receiving a plurality of rope loops (2).

17. The device according to one or more of the preceding claims, characterized in that the holding device has an opening for carrying out the rope loop.

18. The device according to one or more of the preceding claims, characterized in that a guide part for the rope loop is arranged in the opening.

19. The device according to one or more of the preceding claims, characterized in that the fixing means is spatially arranged on the rope loop so that it counteracts a pivoting back of the rope loop during the bond in the angled position.

20. The device according to one or more of the preceding claims, characterized in that the fixing means touches the rope loop on both sides.

21. The device according to one or more of the preceding claims, characterized in that as a fixing by means of a retaining clip (13) is provided which can be clamped in an opening or recess in the precast concrete element or in a gap between the precast concrete elements and thus defines the upright position of the rope loop.

22. The device according to one or more of the preceding claims, characterized in that the fixing means can be screwed into a threaded sleeve embedded in the precast concrete part.