EP2716839B1 - Formwork element - Google Patents

Description

The present invention relates to a formwork element with two laterally spaced formwork panels, which are interconnected by at least a plurality of connecting elements and define between them fillable with a filling material formwork space, in which a configured for fixing the position of reinforcing bars rebar basket can be inserted, wherein in the Interspace between two adjacent connecting elements a reinforcing member is inserted, which has receptacles for attachment of a reinforcing cage forming wireforms.

A generic formwork element is from the font "Rekord Holzmann GmbH & Co. KG Delivery Program Price List 2012 and from the Scriptures DE 102 00 251 A1 known. From the Scriptures FR 2739886 A1 is also a generic formwork element known. From the Scriptures EN 20 2010 It is known to attach to the fasteners wireforms that are shaped so that there is a positional fixation of inserted into the formwork element reinforcing bars. The wireforms may form part of a ring around a reinforcement, or the wireforms form a ring alone or together with other wireforms. By attaching the wireforms to the connecting elements, it is necessary to provide as many connecting elements on the formwork element as required by the minimum distance between the wireforms. According to the DIN standard for steel reinforcements, for example, it is necessary to provide a ring around the reinforcing bars at a distance of at least every 15 cm. This would be a total of 15 with a formwork element of 2 m in length Fasteners required. This makes the formwork element heavy and expensive.

It is the object of the present invention to provide a solution in which can be connected to the production of a reinforcing basket in a simple way wireforms with the formwork element, without it being necessary for the number of installed in the formwork element fasteners above a normal level to increase out.

The object is achieved for a generic formwork element by the reinforcing member has at its connectable with the connecting elements locking elements for locking with corresponding latching openings in the connecting elements, and the reinforcing member has at least one longitudinal web, laterally projecting from the webs on which the recordings are formed ..
By means of the reinforcement component, it is possible to connect wireforms to the formwork element even in the intermediate spaces between connecting elements. In an exemplary 2 m long formwork element usually 4 fasteners are available to connect the two formwork panels sufficiently firmly together. If the distance between the connecting elements is 47 cm, three reinforcing components can be inserted into the intermediate spaces between the connecting elements. Depending on the reinforcement component, wireforms can then be fastened in three places in order to maintain the distance of at most 15 cm per ring.

For mounting the reinforcing member, it is sufficient to insert this in the formwork element. It makes sense to design the dimensions of the reinforcement component so that it extends exactly from one connection element to the next adjacent connection element.

The reinforcement component can also be used independently of a formwork element to produce a reinforcement cage for a reinforcement of a concrete component. The reinforcement component per se does not form part of the invention. For this purpose, reinforcing components are strung together over the length of the reinforcement to be produced, reinforcement bars are inserted and the wireforms required for the production of the reinforcing cage are inserted into the reinforcement components.

A reinforcement cage is required to hold reinforcing bars of a reinforcement within a desired cross-section in a shell installation position. While the reinforcing bars usually can have larger material cross sections depending on the load to be produced in the component, it is sufficient for the forming a strapping wireforms, if they are processed in thinner material cross sections, since they have to position only the reinforcing rods within the concrete component and not static To have loads.

The reinforcing member has at its connectable with the connecting elements ends locking elements for locking with corresponding Latching openings in the connecting elements. Thus, the locking elements may be attached to angled to the main plane of the reinforcing member legs, with which the bottom side profile leg can be engaged behind. Locking lugs can engage in recesses, which are located in the connecting elements. By locking the reinforcing member this is sufficiently strong to hold the reinforcing bars during concrete pouring in the intended target position. Once the concreting process has been completed, the concrete hardens and the reinforcing component becomes inoperative. The locking lugs can be dimensioned so that they provide sufficient strength for the concreting process. The reinforcing member has a longitudinal ridge, projecting laterally from the webs, where the recordings are attached. The construction with a longitudinal web with laterally projecting webs results in a Sketettstruktur that leaves the concrete in the formwork element still sufficient space to distribute evenly and to fill its static functions in the extent anticipated. The reinforcement component can be made in one piece in the skeleton structure, which makes it easier to handle and install.

According to one embodiment of the invention, the reinforcing member is made of a thermoplastic material. The plastic is not subject to any corrosion problem, it is inexpensive to procure and process and it works well with the concrete environment.

The wireforms can be designed so that they fix the reinforcing bars in a desired installation position, in the lateral direction as well as in their altitude. It is also possible to connect a plurality of wireforms to the reinforcement component one after the other, for example a first wireform at several points of the reinforcement component in order first to position reinforcing rods in a lower position in the formwork element, and then a second wireform at several points of the reinforcement component, through the further ones Reinforcing bars can be positioned in a higher position in the formwork element.

According to one embodiment of the invention, the. Longitudinal ridge recesses on. Through the recesses concrete can flow through. When drying and crystallized Zemeritbestandteile these can form connections through the recesses through the reinforcing member through which increases the overall strength of the finished concrete component.

According to one embodiment of the invention, the longitudinal web on several sides projecting webs. Due to the formation of the longitudinal web as a central web, the reinforcing component can be positioned centrally in the formwork element. The wireforms can then be easily connected to the recordings, far as they are easily accessible.

According to one embodiment of the invention, opposing webs at a location of the longitudinal web on at least two pairs of shots. By several Shooting it is possible to attach at one point of the reinforcement component also several wireforms. This can be advantageous if several layers of reinforcing bars are to be installed in the finished concrete component.

According to one embodiment of the invention, receptacles are designed as plug-in sleeves. Through sockets, the wireforms in the insertion area get a good guide, so that they can not be easily removed from their installed position, for example, when concrete is poured into the formwork component.

According to one embodiment of the invention additional fastening clips are arranged on the longitudinal web, the webs and / or the sockets. By means of the fastening clips, it is possible, for example, to fix wireforms as upwardly open U on the reinforcement component. This would not be possible in the sockets, because the wire ends of the wireforms can be inserted only with the free ends down in the sockets. To form a ring, it is not necessary to form the ring closed with connected ends of two U-wireforms, it is sufficient if the free legs of the U-shaped wireforms have a sufficiently long overlap region in the longitudinal direction of the free legs. The connection between the two wireforms later represents the cast and cured. Concrete. Thus, it is possible by the combination of the attachment of two U-wire structures at one point of the bridging part without a direct connection of the two U-wire structures, a ring for strapping the Beweh To form rods by being fixed with their open ends facing each other on the reinforcing member.

According to one embodiment of the invention, the end-side connecting elements of a formwork element are arranged less than 7.5 cm from the end face of a formwork element. By this measure, it can be dispensed with the juxtaposition of formwork elements to have to insert in the interface between two adjacent formwork elements and a reinforcement component. The minimum distance between the two end-side connecting elements of the abutting shuttering elements in the proposed embodiment is less than 15 cm, so that it is sufficient if a ring in the transition region from one to the next formwork element is formed in each case at the connecting element.

According to one embodiment of the invention, one or more wireforms which are open at the top and / or bottom are fastened to the reinforcement component, for example in the form of an upwardly open U, in order to be able to insert a reinforcing rod or a downwardly open U for partially strapping an already inserted reinforcing bar with the U open at the bottom. The pre-assembled wireforms simplify the production of the reinforcement cage at the construction site. All that remains is to place the reinforcement bars in the space delimited by the preassembled wireform, in order then to insert a counter-rotating wireform into the associated receptacle, thereby forming a finished reinforcement ring from the two wireforms overlapping the free legs to accomplish. The production of a reinforcement basket is thus limited to the insertion of the reinforcing bars in the formwork element and the subsequent insertion of the wireforms in the existing recordings.

According to one embodiment of the invention, the reinforcing member has two spaced apart longitudinal webs, which are interconnected by at least two webs, and in the region of the longitudinal webs interconnecting webs are arranged upwardly from the longitudinal webs upstanding webs, which together with the longitudinal webs and the connecting webs form slotted channels in which wireforms are supported supported by the sidewalls of the slotted channels.

According to one embodiment of the invention, the inner edge of the uprights projecting from the longitudinal webs on a distance to the outer edge of the towering from the longitudinal webs ridges, which corresponds to a standard concrete Betondeckungsmaß. Due to the distance by which the inner edge is spaced from the outer edge, and the reinforcing rods can be inserted necessarily only with maximum this distance to the outer edges of the webs in the reinforcement member. If the distance between the inner edge and the outer edge of the webs projecting from the longitudinal webs corresponds to the standard concrete cover factor, the reinforcing rods are inevitably always installed with a standard concrete concrete cover dimension in the concrete component to be produced. The extent to which the reinforcing steels must at least be covered by concrete is determined by the respective environmental conditions and exposure classes, for example from the standard DIN EN 1045 and the DIN EN 206 or the following standards.

It is expressly understood that each of the above-described embodiments of the invention can be combined per se, but also in any combination with the features of further subclaims with the subject of the main claims.

Fig. 1:

eine Ansicht von schräg oben auf ein Schalungselement mit einem Bewehrungsbauteil,

Fig. 2:

das Schalungselement aus Fig. 1 ohne Schalungsplatten, aber mit einer eingelegten Bewehrung,

Fig. 3:

eine Ansicht auf die Stirnseite eines Schalungselements, in das bereits ein erstes Drahtgebilde vormontiert eingesetzt ist.

Fig. 4:

eine Ansicht auf ein zweites Ausführungsbeispiel für ein Bewehrungsbauteil aus einer Ansicht von schräg oben, und

Fig. 5:

eine Ansicht auf das in Fig. 4 gezeigte zweite Ausführungsbeispiel eines Bewehrungsbauteils aus einer Ansicht von oben.

To further explain the invention, reference is made to the following description and the drawing. In the drawings show:

Fig. 1:

a view obliquely from above of a formwork element with a reinforcement member,

Fig. 2:

the formwork element Fig. 1 without formwork panels, but with an inserted reinforcement,

3:

a view of the front side of a formwork element, in which already a first wire structure is inserted pre-assembled.

4:

a view of a second embodiment of a reinforcing member from a view obliquely from above, and

Fig. 5:

a view on the in Fig. 4 shown second embodiment of a reinforcing member from a top view.

In Fig. 1 is a view obliquely from above of a formwork element 2 shown. The formwork panels 4 are shown only in dashed lines. The shuttering panels 4 are connected to each other in the embodiment by two connecting elements 6. The formwork panels 4 define between them a formwork space 8, can be filled in the concrete.

Between the two connecting elements 6, a reinforcement component 10 is inserted in the region of the formwork element 2. The reinforcing construction part 10 essentially consists of a longitudinal web 12, from which webs 14 protrude laterally. On the webs 14 receptacles 16 are formed, which are formed in the embodiment as sockets.

So that even concrete can be poured into the formwork chamber 8, the reinforcing member 10 also has recesses 18 through which the concrete flow into the shuttering space underneath and can completely fill it.

To connect the reinforcement component 10 with the connecting elements 6, the reinforcement component 10 has latching elements 20 on the end sides. The locking elements 20 are elevations that can be engaged in complementarily shaped latching openings 22 which are located in the connecting elements 6.

In Fig. 2 It is shown how reinforcing bars 26 can be placed on wireforms 24 to be fixed in position within the formwork space 8. The wireforms 24 are inserted into the receptacles 16. For each wireform 24 there are pairs of receptacles 16 on the webs 14, both sides of the longitudinal web 12. The wireforms 24 are shaped so that the reinforcing bars 26 can be positioned at a desired height within the formwork element 2 and the formwork space 8.

In Fig. 2 are shown in the embodiment shown there only wireforms 24 which have a U-shape, the open end facing down. Deviating from this embodiment, wireforms can be clipped to the receptacles 16, the open end facing upward. It is also possible to put on top reinforcing bars 26 still wireforms with downwardly pointing legs to achieve a height-wise overlap of the legs with legs lower lying wireforms 24.

In Fig. 3 is a view is shown on the front side of a formwork element 2. In this embodiment, the formwork element 2 with a pre-assembled wire 24a. In order to form a reinforcement with a ring encircling the reinforcement, it is sufficient if in the space bounded by the wireform 24a with the upstanding free legs, the reinforcing rods 26 inserted and then the wireform 24b with the free legs down in the associated receptacle 16 is inserted. The two wireforms 24a, 24b form together by the overlapping area Ü, in which the free legs of the wireforms 24a, 24b overlap, a strapping around the reinforcing bars 26, which can be formed at any point of a web by simply inserting the wireform 24b.

In Fig. 4 is a view obliquely from above of a second embodiment of a reinforcing member 10 is shown. The reinforcement member 10 has two longitudinal webs 12 which are spaced and arranged parallel to each other. The dimensions of the reinforcement component 10 are dimensioned such that it can be inserted into the formwork space 8 of a formwork element 2. The longitudinal webs 12 have recesses 18, can run through the freshly poured into the formwork space concrete in the area covered by the longitudinal webs 12 area, so that there are no voids in the finished concrete component. Also in Fig. 4 shown reinforcement member 10 is preferably made of a plastic.

The longitudinal webs 12 are interconnected by a total of three webs 14 which protrude in the lateral direction of the longitudinal webs 12. The combination of the longitudinal webs 12 with the connecting webs 14 forms a base with which the Be Wehrungsbauteil 10 can be placed on a subjacent underlying tip over. Due to the larger surface covering base, it is not absolutely necessary to connect the reinforcement member 10 with the connecting elements 6 of a formwork element 2. As a base, a reinforcement member 10 can be placed on a wall crown, but also on a concrete surface, a floor or other surfaces, even independently of a formwork element. 2

In addition, in the region of the longitudinal webs 12 interconnecting webs 14 upwardly projecting from the longitudinal webs 12, additional, also in the lateral direction of the longitudinal webs projecting webs 14 are arranged. The upwardly projecting webs 14 form together with the longitudinal webs 12 and the connecting webs 14 slotted channels 28, in which wireforms 24 are supported supported by the side walls 30 of the slotted channels 28 when they are inserted into the slotted channels 28 and partially the side walls 30 of the slotted channels 28 abut. The slotted channels 28 in this way recordings 16 for insertion of the wires 24th

In the Fig. 4 and 5 It can be seen that the inner edge 32 of the webs 14 rising up from the longitudinal webs 12 is arranged at a distance to the outer edge 34 of the webs 14 rising from the longitudinal webs 12, which results from the depth of the corresponding side walls 30. The distance dimension ei preferably corresponds If a reinforcing rod parallel to the longitudinal direction of the reinforcing member 10 is inserted into the space between neigh hard webs 14, this inevitably also holds such a distance to the outer surface of the concrete component that a sufficient Betondeckungsgrad the reinforcement is given.

In Fig. 5 is that in Fig. 4 shown second embodiment of a Bewehruhgsbauteils 10 shown in a view from above. In this perspective, the slotted channels 28 bounded by the sidewalls 30 are clearly visible. The slotted channels 28 have in their course recesses 18 so that liquid concrete can fill all the cavities in the vicinity of the reinforcement member 10. While only two slotted channels 28 are formed in the region of the connecting webs 14, there are four slotted channels in the region of the upwardly projecting webs 14. The inwardly facing side walls 30 of the two longitudinal webs 12 are lowered in the embodiment in order to increase the free cross section of the slotted channels 28 in their course, but still available to increase the longitudinal stability and torsional stiffness of the longitudinal webs 12 and an additional support and leadership allow for inserted into the slotted channels 28 wireforms 24.

It is expressly understood that the invention is not limited to the embodiment described above. The expert prepares it no difficulty in modifying the embodiment in a manner that appears to be suitable and adapting it to a specific application, as far as this is within the scope of the appended claims.

Claims (11)

1. Formwork element (2) comprising two laterally mutually spaced formwork plates (4) that are interconnected by at least a plurality of connection elements (6) and define, between said plates, a formwork space (8) which can be filled with a filling compound and into which a reinforcement cage designed to fix the position of reinforcement bars can be inserted, wherein a reinforcement component (10) is inserted in the intermediate space between two adjacent connection elements (6), which component comprises holders (16) for attaching wire structures (24) forming a reinforcement cage, the reinforcement component (10) comprises, on the ends thereof that can be connected to the connection elements (6), latch elements (20) for latching into corresponding latch openings (22) in the connection elements (6), and the reinforcement component (10) comprises at least one longitudinal web (12), from which projections (14) project laterally, on which projections the holders (16) are formed.
2. Formwork element (2) according to claim 1, characterised in that the reinforcement component (10) is made of a thermoplastic material.
3. Formwork element (2) according to either claim 1 or claim 2, characterised in that the longitudinal web (12) comprises recesses (18).
4. Formwork element (2) according to any of the preceding claims, characterised in that the longitudinal web (12) comprises projections (14) that project on a plurality of sides.
5. Formwork element (2) according to any of the preceding claims, characterised in that projections (14) that face one other at a position on the longitudinal web (12) comprise at least two paired holders (16).
6. Formwork element (2) according to any of the preceding claims, characterised in that holders (16) are formed as insertion sockets.
7. Formwork element (2) according to any of the preceding claims, characterised in that additional attachment clips are arranged on the longitudinal web (12), the projections (14) and/or the insertion sockets.
8. Formwork element (2) according to any of the preceding claims, characterised in that the connection elements (6) at the ends of a formwork element (2) are arranged so as to be less than 7.5 cm away from the end face of a formwork element (2).
9. Formwork element (2) according to any of the preceding claims, characterised in that one or more wire structures (24) are attached to the reinforcement component (10), which are upwardly and/or downwardly open in order to be able to insert a reinforcement bar (26).
10. Formwork element (2) according to any of the preceding claims, characterised in that the reinforcement element (10) comprises two mutually spaced longitudinal webs (12) that are interconnected by at least two projections (14) and, in the region of the projections (14) that interconnect the longitudinal webs (12), there are arranged projections (14) that project upwardly from the longitudinal webs (12) and form, together with the longitudinal webs (12) and the interconnecting projections (14), slotted channels (28) into which wire structures (24) can held in a manner supported by the side walls (30) of the slotted channels (28).
11. Formwork element (2) according to any of the preceding claims, characterised in that the inner edge of the projections (14) that project from the longitudinal webs (12) has a measurement, for the distance from the outer edge of the projections (14) that project from the longitudinal webs (12), that meets a standard concrete cover measurement.

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