EP0647744B1 - Reinforcement for concrete constructions at a constructional joint - Google Patents

Description

The invention relates to reinforcement for concrete structures constructive joints in one and / or two concrete component (s), which reinforcement is at least one receptacle for a joint tape Has rubber, plastic or the like.

For structures that are built with concrete, it is with Exceeding a certain size is usual, work or To provide expansion joints. The construction joints are through specific construction of a component, e.g. B. building or a bridge, conditionally, whereas the expansion joints are required are to compensate for the stretching or contraction of To create components due to the different Temperatures. Hiebei is, for example, in An expansion joint is provided at intervals of 24 to 25 m. In order to prevent moisture or the like from penetrating through these working or Avoid expansion joints in these joints rubber-elastic tapes, so-called joint tapes, arranged. These joint tapes must be used for economic reasons already inserted in the formwork for the concrete component, on the one hand, easy assembly of the joint tape is desired is and a fixation of the same during wrapping with Concrete is purposeful and at the same time violates the Joint tape, such as holes through it, which serve to do the same to the Fixing reinforcements is prevented. Another Difficulty is that part of the joint tape, u. between the one that in the further, constructive Component should protrude, on the one hand not in the first component may be embedded and on the other hand also not injured shall be.

DE-B-1 259 546 becomes a joint insert for concrete construction known, the joint tape in the middle and on both sides the same has extending webs in the area of the later Fug are arranged. These webs carry out formwork Expanded metal for the joint to be formed. Such a construction simplifies the formwork work, because instead of wooden formwork Expanded metal is provided to fix the position an exact orientation of the joint tape, based on the normal Formwork, cannot be achieved here, since no additional Support of the joint tape is present, so that unwanted Faults or the like may be present.

CH-A-559 294 and US-A-3,884,000 become another Joint tape known to be parallel to its two Provided longitudinal extension a reinforcement Carries steel bars. As a stretching member are transverse to the longitudinal extent Steel brackets are provided, each in the area of the lengthways extending steel reinforcements in corresponding recesses intervene and at the same time with a wire wire on the im Concrete steel reinforcement to be provided are attached. Although through such a construction an exact fixation of the Joint tape both lengthways and crossways is possible, such a joint tape holder has the Disadvantage that such brackets at relatively short intervals are to be provided, through which the transverse extension of the Joint tape are guaranteed by means of the reinforcements of a solder wire must be attached, so that a exact positioning of the joint tape is possible, however there is a particularly high workload. With untrained Personnel also have the possibility that not the required number of fixings for the joint tape is, so that despite this construction in daily use there are inexactly oriented joint tapes.

A joint formwork element is known from EP-A-0 532 908, which has a basket-like structure made of a steel mesh mat. In the joint tape is to be added to this basket. On both sides of the basket are welded at approximately normal striving angles, which are the actual formwork elements made of expanded metal carry. Although such a formwork element does the job, the joint tape exactly before the actual concreting process position, however, there are considerable disadvantages. On the one hand need a large number of angles on either side of that basket-like structure, which is to carry the joint tape, welded on so that the formwork elements are positioned exactly can and at the same time are able to respond to them through the flowable concrete to absorb pressure. On the other hand occurs the basket-like wrapping of the joint tape makes it special Disadvantage that the present in a basket lattice-shaped structure the exact enclosure required Joint tape requires an extraordinary amount of work because the concrete, u. not only the fine fraction, just through the grid must pass through, the material flow on the one hand through the Grid is significantly hampered and on the other hand by the additional welded angle another unfavorable flow resistance given is. One defective even in one place However, embedding the joint tape in the concrete has the cause that the desired sealing of the joint cannot be achieved can, so the total effort required for positioning the joint tape is required, not the desired one technical implementation leads.

The object of the present invention is now a Reinforcement for concrete structures to create a simple and rapid positioning of a joint tape that allows on Due to their constructive training, a particularly labor intensive Wrapping the joint tape with concrete allowed and that at the same time, it is particularly simple and requires little work can be created.

The reinforcement according to the invention, in particular made of steel, for Concrete structures on structural joints in one and / or two concrete component (s), which reinforcement at least one recording for a rubber joint tape that bridges the joint, Plastic or the like. With a plurality transversely to the longitudinal direction of the Joint tape on the bracket then arranged on the receptacle, the reinforcement oriented in the longitudinal direction of the belt are connected, wherein on both sides for receiving formwork elements, which in particular have perforations, e.g. B. Expanded metal plates are arranged, consists essentially in that the bracket directly and / or over in the longitudinal direction of the joint tape further reinforcements, which with the Ironing are directly connected to the formwork elements and that the bracket with the receptacle and the area that the Formwork elements and / or the formwork element (s) bearing additional reinforcement, are integrally formed. With such training, reinforcement is created which carries a joint tape on the one hand and formwork elements on the other for the joint, so that the arrangement of the joint tape can be done together with the formwork elements. Thereby, that the bracket the joint tape directly or through mediation of another reinforcement running along the joint tape wear, a particularly simple bracket is given, which at the same time a fluidic simple training allowed, so that there is also a reinforcement that is particularly simple and with low workload can be produced, one exact positioning of the formwork together with the joint tape is guaranteed. On the other hand, such reinforcement fluidically so constructed that material a desired full area during the filling process with concrete Wrapping the joint tape in the area to be concreted can be easily achieved.

If the joint for the joint tape with a U or V_shaped area of the bracket, the joint tape can each according to the length, thickness and flexibility of the same according to the Distance of the U-shaped areas of the bracket to each other exactly and be fixed stationary at work, whereby, if necessary, also the insertion of the joint tape after positioning the Reinforcement can be done on site. It is also ensured that the flow resistance for the liquid concrete is extraordinary can be kept low, since only the U-shaped or V_shaped areas of the bracket represent flow baffles.

Corresponds to the U- or V-shaped area of the recording in the essentially the transverse extent of the joint tape, so the same not only in the longitudinal direction, but also in the Transverse direction to be held exactly in position so that Bends in the joint tape during work on special are easy to avoid.

The bracket points on both sides to the U- or V-shaped area at least one opposite to the U- or V-shaped area oriented further U- or V-shaped area with a another leg that is transverse to the legs of the U's or V's runs on, there is an approximately triple lyric loop through the Steel reinforcement given by a simple bending process can be obtained, the middle lyra loop, i.e. the middle U-shaped bracket serves to hold the joint tape and the other legs either directly or along the Joint tape running reinforcements the formwork elements can wear.

Corresponds to the U- or V-shaped area only a part of the Transverse extent of the joint tape and carries at the ends of the U's or V's running across the joint tape, which the Have formwork elements, is an extremely simple Reinforcement given that can be manufactured particularly easily and adequate protection of the Joint tape guaranteed.

Is the part of the joint tape protruding from the bracket in turn from a U- or V-shaped area of another Surround bracket, which has legs that are transverse to Longitudinal extension of the joint tape are arranged, so a essentially symmetrical formation of a recording for the Joint tape can be reached, taking it for logistical reasons for example, it may be desirable to have two such Reinforcements are provided, one on each side only Wear formwork so that this is how it works on the construction site that part of the reinforcement is installed on the one hand, then the joint tape is inserted into the reinforcement, the Joint tape in about half of its transverse extent from the Recording protrudes. To cover this further from the recording protruding part of the joint tape is then the same another shot applied, like the first shot the formwork only supports on one side. The further reinforcement can then be attached to the first reinforcement with wire be, so that exact positioning with the simplest means both of the joint tape and the reinforcement on constructive difficult joints is guaranteed.

A particularly simple assembly results when the another bracket over the longitudinal direction of the joint tape Reinforcements are connected.

If the bracket has an approximately U-shaped or V-shaped area, which leg carries, which is arranged inside the U's or V's are, with the two legs a receptacle for the Joint tape is formed, so can be a receptacle for the joint tape are formed, the z. B. with a vertical orientation of the Joint tape is open up and down, so that the one hand Positioning of the joint tape through the further reinforcement can be given and also a simple complete Flow around the joint tape also in the lower and upper area of the joint tape can be completely guaranteed.

If the legs of the U's or the V's carry the formwork elements, this reinforcement makes training particularly easy received a construction joint.

If desired, the joint tape can be inserted in the holder Clamp fit are held, this clamp fit on the one hand the assembly of the reinforcement can be done so that the reinforcement can be positioned together with the joint tape on site, on the other hand, there is also the option of re-sealing the joint tape Installation of the steel reinforcement in the receptacle and then a deformation of the bracket by deforming the bracket Joint tape to accomplish.

The invention will be described in more detail below with reference to the drawings explained.

Fig. 1 und 2 Schnitt durch eine Schalung mit einem bewehrten Betonbauteil und vertikalem Arbeitsfugenband in Draufsicht,

Fig. 3 einen Schnitt durch zwei Betonbauteile mit Stahlbewehrung und einem horizontal angeordneten Fugenband und

Fig. 4 die Stahlbewehrung gemäß Fig. 1 mit Fugenband in Schrägansicht.

Show it:

1 and 2 section through a formwork with a reinforced concrete component and vertical construction joint tape in plan view,

Fig. 3 shows a section through two concrete components with steel reinforcement and a horizontally arranged joint tape and

Fig. 4 shows the steel reinforcement according to Fig. 1 with joint tape in an oblique view.

1 shows a construction phase in which a component 1 a vertical wall is made of concrete, whereas the imaginary component 2 only after component 1 has solidified Concrete is made. Between the formwork parts 3 and 4 is the Reinforcement arranged with vertical steel reinforcements 5 and horizontal steel reinforcements 6 is constructed. The reinforcement can also be made of other materials e.g. Carbon fibers exist. The bracket 7 is approximately lyre-shaped and has one Recording in the form of the U-shaped area 8, which the Joint tape 9 takes up completely. On this U-shaped area close two more inverted U-shaped ones Areas 10 from which legs 11 strive. This Legs are approximately in the middle of the U-shaped Area 8 provided. There are one along the joint tape A plurality of brackets 7 are provided, which over each other Reinforcements 12 which run along the joint tape 9, are connected. The legs 11 are by spot welding an expanded metal grid 13 connected, a connection of the Expanded metal grid is made along the reinforcement 12a, the longitudinal the joint tape is oriented and the center of the U-shaped Area 8 is welded to the brackets 7. Instead of one Expanded metal mesh can also be another perforated metal band be provided. Under certain conditions, too instead of the metal grid, a grid made of plastic or the like. to be ordered. There is a square timber 14 within the formwork arranged vertically, which is the positioning of the steel reinforcement 15 ensures within the formwork parts 3, 4. From a certain Height of the vertical reinforced concrete wall must be another Squared timber 16, which engages the surface of a grid 13, be provided. The joint tape 9 is sufficient, as is particularly clear can be seen from component 1 to component 2. Furthermore Thickenings 17 are provided on the joint tape, so that a special can be fixed well in the concrete component.

The clear distance between the two formwork parts 3, 4 is 30 cm, the diameter of the steel reinforcements 5 and 6 12 mm, the Distance a of the two legs of the U's each 2.5 cm, whereas the diameter of the steel reinforcement is 5 mm. The bracket 7 are arranged at a distance of 25 cm from each other, so that during the filling of the cavity between the Formwork parts 3, 4 of the flowable concrete unimpeded up to Joint tape 9 can step forward and also covers the entire area, so that no voids or the like occur, which then Leakages can possibly cause.

If the second component 2 is to be manufactured, it is then only required to remove the squared timbers 14 and 16 and along the formwork parts 3, 4 a further steel reinforcement 15 to be arranged, which is usually to be provided after 24 m at the latest. The steel reinforcement is then fixed in an analogous manner Way, as shown in Fig. 1. In this steel reinforcement then the joint tape 9 inserted, with The other U-shaped regions 10 also bend against one another a fixation of the joint tape 9 can be achieved.

In Fig. 2, another steel reinforcement 18 is shown, the two rows of brackets 19 and 20 are constructed. These brackets each have a U-shaped area 21, 22, of which Protect legs 23 and 24. The bracket 19, 20 are over Reinforcements 12 in the longitudinal direction of the joint tape 9 run, connected. These reinforcements 12 serve just as with the steel reinforcement of Fig. 1 for longitudinal reinforcement the expanded metal mesh 13. The expanded metal mesh is in illustrated embodiment each with the Ironing 19 connected, with the possibility that each an expanded metal grid from a bracket, u. between will be carried. The two brackets 19 and 20 are over one Roed wire 25 connected to the Stahlamierung 6 and 5 and fixed in position. When filling cavities 1 or 2 with flowable concrete occurs a particularly good filling of the rooms also with regard to the joint tape 9, since the slightest Flow obstructions to the concrete exist. A The steel reinforcement 18 can be positioned either that an assembly of the bracket rows 19 with expanded metal 13 and the bracket 20 before installation between the formwork elements 3, 4th takes place, the joint tape 9 already in the recording by the U-shaped region 21 or 22 is formed. It However, there is also the possibility of first on site Assemble the bracket 19, then the joint tape 9th to be arranged and covered with the row of brackets 20. How both from Fig. 1 and from Fig. 2, it will Joint tape, which consists of rubber-elastic material, through the brackets in their entire transverse extent in each case are supported that a substantial deformation is avoided. The longitudinal deformation is due to the large number of brackets, which are arranged one behind the other are avoided.

In the embodiment shown in Fig. 3 with a Section through two components 26, 27 is at least partially horizontally arranged construction joint 28 is provided. From the with A component 26 provided with a reinforcement 29 projects a reinforcement 30 in component 27. The brackets have an approximately U- or V-shaped area 31 on the legs 32 and 33, which in the Inside of the U-shaped region 31 are arranged, whereby by these legs 32 and 33 again a receptacle for the Joint tape 9 is formed. The outer legs 34, 35 of the U-shaped area of the bracket in turn contribute Expanded metal 13, the connection of the bracket 31 to one Steel reinforcement 34 running along the joint tape 9 Reinforcement 12 is done. Again, how is particularly clear evident, a completely free passage of the Added concrete to the joint tape.

1, 2 and 3 are each in one piece formed, the connection with the formwork elements, So the expanded metal grid 13, either directly or via the reinforcement 12 or 12a running along the joint tape. Additional flow resistances are avoided and it is one extraordinary simple training of steel reinforcement guaranteed.

In the steel reinforcement 15 shown in Fig. 4, the Steel reinforcement according to FIG. 1 is clearly visible, that the bracket 7 are arranged at a distance from each other and in each case via the reinforcements 12 in the longitudinal direction y of the Joint tape 9 run, are interconnected. The Joint tape 9 is in the large U-shaped area 8, which in Transverse direction z is oriented to the joint tape, the bracket arranged, with only two brackets 7 for reasons of clarity are shown, which are provided in a plurality in a row are. For example, 4 brackets per m are provided.

The fact that the recordings for the joint tape essentially through the U-shaped or V-shaped areas of the bracket done and no additional cross struts for Positioning the tape are arranged, the flowable Tread the concrete freely to the joint tape and the entire surface enclose. The flow resistance is only there where it should be reasonably guaranteed, u. between Area of the formwork elements of the expanded metal grid 13.

Claims (11)

1. Reinforcement, in particular of steel, for concrete structures at design joints (28) in one and/or two concrete components (1, 2, 26, 27), which reinforcement exhibits at least one mounting (8, 21, 22, 32, 33) for a joint waterstop (9) made of rubber, plastic or the like with a plurality of binders (7, 19, 20, 31) which are disposed adjoining the mounting transversely relative to the longitudinal direction of the joint waterstop and connected by means of further reinforcements (12) orientated in the longitudinal direction of the joint waterstop, whereby the formwork elements (13), which in particular exhibit perforations, e.g. made of expanded metal mesh, perforated plates or the like, are disposed on both sides of the mounting (8), whereby the binders (7) carry the formwork elements (13) directly and/or by means of further reinforcements (12) which run in the longitudinal direction of the joint waterstop and are connected directly to the binders (7, 19, 20, 31), and the binders (7, 19, 20, 31) are embodied in one piece with the mounting (8, 21, 22, 32, 33) and the portion which exhibits the formwork elements (13) and/or the further reinforcement (12) carrying the formwork element or elements (13).
2. Reinforcement according to claim 1, characterised in that the mounting (8, 21, 22) for the joint waterstop (9) is formed with a U-shaped or V-shaped portion of the binders (7, 19, 20).
3. Reinforcement according to claim 2, characterised in that the U-shaped or V-shaped portion of the mounting (8) essentially corresponds to the transverse extension of the joint waterstop.
4. Reinforcement according to claim 2 or 3, characterised in that on both sides of the U-shaped or V-shaped portion (8) the binder (7) exhibits at least one further U-shaped or V-shaped portion (10) which is orientated towards the U or V in a mirror image and has a further limb which runs transversely relative to the limbs (11) of the U or V.
5. Reinforcement according to claim 4, characterised in that the limbs (11) disposed transversely carry the formwork elements (13).
6. Reinforcement according to claim 2, characterised in that the U-shaped or V-shaped portions correspond to only one part of the transverse extension of the joint waterstop and at the ends of the U or V exhibit limbs (23, 24) which run transversely relative to the joint waterstop and carry the formwork elements (13)
7. Reinforcement according to claim 6, characterised in that the part of the joint waterstop (9) projecting out of the binder (19) is for its part surrounded by a U- shaped or V-shaped portion (22) of a further binder (20) which exhibits limbs (24) which are disposed transversely relative to the longitudinal extension of the joint waterstop (9).
8. Reinforcement according to claim 7, characterised in that the further binders (20) are connected by means of further reinforcements (12) running in the longitudinal direction of the joint waterstop.
9. Reinforcement according to claim 1, characterised in that the binder with roughly U-shaped or V-shaped portions (31) exhibits limbs (32, 33) which are disposed in the interior of the U or V, whereby a mounting for the joint waterstop is formed with the two limbs (32, 33).
10. Reinforcement according to claim 9, characterised in that the outer limbs (34, 35) of the U or V carry the formwork elements (13).
11. Reinforcement according to one of claims 1 to 10, characterised in that the mounting (8, 21, 22, 32, 33) forms a clamp fit for the joint waterstop (9).

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