DE8810306U1 - Reinforcement connection - Google Patents

Description

Reinforcement connections

The innovation relates to a device for insertion into a formwork for a concrete component, for example a concrete wall, for storing reinforcing bars to be anchored in this concrete component in accordance with the generic term of protection claim 1. Devices of this type are known per se and are also generally referred to as "reinforcement connections".

Such reinforcement connections are used to connect another concrete component (e.g. another concrete wall) to a concrete component that is to be constructed first (e.g. concrete wall) in a particularly simple manner, whereby the reinforcement bars are embedded with their anchoring areas in the concrete component that is to be constructed first and with their connecting parts in the concrete component to be connected, thus forming a connection insulation that bridges the connecting area between the two concrete components. The use of these reinforcement connections is carried out specifically in such a way that the reinforcement connection is inserted into the formwork for the concrete component to be constructed first. After the formwork of this concrete component has been removed, the connecting parts of the reinforcement bars are then exposed and bent up or back so that these connecting parts are then essentially axially aligned with a length of an associated anchoring area and can be embedded in this form in the concrete of the concrete component to be connected.

A certain disadvantage of many known reinforcement connections is that when they are used in the connection area between the adjoining concrete components, there is only a reduced shear force transmission, i.e. a reduced transmission of forces that act perpendicular to the bent connection parts and in particular parallel to the longitudinal extension of the reinforcement connection. Furthermore, the known reinforcement connections in particular have

Especially when using steel sheet storage elements, they are relatively heavy and are often difficult and time-consuming to install.

The innovation is based on the task of demonstrating a reinforcement connection that, while being simple and inexpensive to manufacture, also ensures a high shear force transmission.

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designed in accordance with the characterising part of claim 1.

If at least two retaining elements are provided for the reinforcement connection according to the innovation, which are connected to one another by a flat material, the size or cross-section of the retaining elements can be kept small despite an overall width that is optimally adapted to the thickness or wall thickness of the concrete component to be connected, which leads to less material consumption and thus to lower costs, but also to a lower weight of the retaining elements. Because the flat material is profiled in its area between two adjacent retaining elements, this flat material acts as a shaping formwork element in this area when the concrete component to be created first is created in such a way that a corresponding profile is created on the concrete component to be created first in the connection area, which is then filled with the concrete of this concrete component to be connected when the concrete component to be connected is created, so that an "interlock" between the two concrete components and thus a significant improvement in the transmission of shear force is achieved.

With the design of the reinforcement connection according to the invention, it is also possible, in particular, to design the individual reinforcement bars as simple, angled elements in the case of high tensile force transmission in the connection area between the adjoining concrete components, which in the «essential»

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ally only consist of two legs bent at about 90° relative to each other. This design of the reinforcement bars not only simplifies the manufacture of the reinforcement bars, but also their assembly at the reinforcement connection or at the retaining elements. This design also enables automatic production with particularly simple equipment.

Further developments of the innovation are the subject of the dependent claims.

The innovation is explained in more detail below using the figures and examples. They show:

Fig. 1 shows a simplified cross-section through a reinforcement connection according to the innovation, together with a formwork wall of a concrete formwork;

Fig. 2 shows the reinforcement connection according to Fig. 1 in plan view; Fig. 3 in a similar representation as Fig. 2 another

Design of the reinforcement connection according to the new regulations;

Fig. 4 shows a schematic representation of a partial length of the reinforcement connection embedded in the first concrete component with a bent connection part and with a connection part that has not yet been bent.

The reinforcement closure 1 shown in Fig. 1 and 2 consists essentially of two box-shaped or profile-shaped retaining elements 2 and 3, each of which has the same size and shape and is made from a cut of flat material, preferably from sheet steel, by bending. Each retaining element 2 or 3 has a base 4 and two legs 5 made in one piece with the base 4 by bending, which, like the base 4, extend over the entire length of the relevant retaining element 2 or 3, protrude beyond the inner surface of the base 4 and are connected to

the inner surface of the base 4 each enclose an angle of less than 90°, so that each storage element 2 b*,w., 3 has a dovetail-shaped cross-section formed by its base 4 and its two legs 5. At their free ends, which are remote from the base 4 and extend in the longitudinal direction of the respective storage element 2 or 3, the legs 5 are each angled outwards, ie the legs 5 each have a bend 6 there which also extends over the entire length of the storage element 2 or 3 and which encloses an acute angle with the associated leg 5, ie an angle of less than 90°. A number of reinforcing bars (structural steels) are passed through the base 5 of each retaining element 2 or 3, each of which has two legs 7' and 7'* bent essentially at right angles to one another, with the legs 7' of the reinforcing bars 7 each projecting essentially vertically beyond the outside of the base 4 facing away from the legs, and the legs T' of all reinforcing bars 7 as well as the bending or transition areas between the legs T and T' being accommodated in the interior space &thetas; of the respective retaining element 2 or 3, which is delimited by the base 4 and the legs 5. The legs T form the anchoring areas of the reinforcement connection 1 and the legs T' form the connecting parts of this reinforcement connection to be bent out.

In the embodiment shown, the passage points of the reinforcement bars 7 through the base 4 of the respective retaining element 2 or 3 are provided on a line that runs approximately in the middle of the base 4 between the two legs 5 in the direction of the longitudinal extension of the retaining element 2 or 3. The legs 7" arranged in the interior 8 are provided to run slightly obliquely with respect to the longitudinal extension of the retaining element 2 or 3, as can also be seen from Fig. 2. The two retaining elements 2 and 3 of the reinforcement connection T are arranged at a distance and parallel to one another in such a way that each end 2' of the retaining element 2 is in a

perpendicular to the longitudinal extension of the storage element 2 running axial direction is aligned with one end 3* of the storage element 3. The two storage elements 2 and 3 are connected to one another by a, in the embodiment shown, rectangular cut of flat material 9, whereby this flat material 9 is connected with one of its surface sides, for example by gluing or in another suitable manner, to the storage elements 2 and 3, in each case in the transition area between the legs 5 and their bends 6, i.e. at the preferably rounded edges formed there and extending in the longitudinal direction of the storage element 2 or 3. In principle, it is also possible for the flat material 9 to be connected with one surface side by gluing or in another suitable way to the surface of the associated development 6 facing away from the respective leg 5, in which case the bends 6 are shaped so that they are essentially parallel to the respective base 4 of the corresponding retaining element 2 or 3. The flat material 9, which in particular also extends into the area 10 formed between the two retaining elements 2 and 3 or bridges this area 10, namely over the entire length of the reinforcement closure 1 or the retaining elements 2 and 3, covers the respective S in the embodiment shown.

The opening of the two retaining elements 2 and 3 opposite the floor 4 is closed off. At their two ends 2' and 3', the retaining elements 2 and 3 are preferably provided with a detachable insert, e.g. made of foamed plastic, so that the interior space β of each retaining element 3 is closed on the one hand by the mesh material 9 and on the other hand (at the two ends 2' and 3') by the insert. In the part of the mesh material 9 bridging the area 10, at the reinforcement connection 10, cup-shaped or truncated cone-shaped projections 11 are made in the |

Braiding material 9 pressed in, in the area of these projections |

the flat material 9 stands above the rest of the upper \

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surface side of this flat material, to which (surface side) the storage elements 2 and 3 are also attached in the manner described above.

As shown in Fig. 1, the legs T are each provided with a rake-like bend 12 at their end remote from the ground 4, which improves the integration of the legs T in the concrete even when these legs are of shorter length.

The reinforcement connection 1 is used to create a connecting reinforcement in the transition area between a concrete component 13 created first (for example a concrete wall or concrete ceiling) and a concrete component created later to be connected to the concrete component 13.

Where a further concrete component is to be connected to the concrete component 13, the retaining element is attached to the inner surface of a formwork wall 14 in a suitable manner, for example by nailing etc., in such a way that the flat material 9 with its surface side facing away from the retaining elements 2 and 3 lies tightly against the inner surface of the formwork wall 14, i.e. the retaining elements 2 and 3 adjacent to the formwork wall 14 with the free edges of their legs 5 and also the projections 11 formed in the flat material 9 protrude beyond the inner surface of the formwork wall 14 into the interior of the formwork in question. After the concrete introduced into the formwork has hardened or set, and after the concrete component 13 thus formed has been removed from the concrete, the flat material 9, which is preferably a thin sheet material or a fine plastic film, can be removed or torn off from the retaining elements 2 and 3 embedded in the concrete of the concrete component 13 together with the legs 7', thereby exposing the interior spaces 8 of the retaining elements 2 and 3. The legs 7" are then bent up using a suitable tool, preferably at the transition areas 7'" (arrow A in Fig. 4), so that the bent legs 7'' are then aligned or at least approximately aligned with the corresponding one already embedded in the concrete component 13.

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embedded leg 7', as shown in Fig. 4 for the upper, already bent or bent back leg T' . When the concrete component to be connected is constructed, the bent legs 7" are then embedded in the concrete of this concrete component to be connected, so that the reinforcement bars 7 form the connecting reinforcement in the transition area between the two concrete components.

The reinforcement connection 1a shown in Fig. 3 differs from the reinforcement connection 1 essentially only in that in the area 10 between the two retaining elements 2 and 3, no cup- or truncated cone-like projections 11 are pressed into the flat material, but rather strip-like projections 15, which in turn protrude beyond the remaining part of the flat material 9, namely that surface side of the flat material 9 to which the retaining elements 2 and 3 are attached. The projections 15, which are each parallel to one another and provided at predetermined distances from one another, lie with their longitudinal extension perpendicular to the longitudinal extension of the retaining elements 2 and 3.

The projections 11 and 15 form corresponding recesses in the concrete component 13 at the connection area of these projections 11 and 15, which are then filled by the concrete of the concrete component to be connected, just like the interior spaces 8 of the retaining elements 2 and 3, so that in the connection area there is an intimate connection between the concrete components adjoining one another, which (connection) ensures an increased shear force transmission in a direction parallel to the retaining elements 2 and 3.

The projections 11 and 15 preferably each have a height of at least 15 mm. The flat material 9 can also be sheet steel, in which case the cut of the flat material 9 is selected so that it only extends in the area 10 between the two storage elements 2 and 3, whereby the area opposite the floor 4

'open side of each storage element '2 or 3 is closed in another, suitable way, e.g. by an additional plastic film or an additional cut from a plastic flat material.

It is understood that the reinforcement bars 7 are held in the region of their passage points on the floor 4 or in another suitable manner on the retaining elements 2 and 3.

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Claims (8)

•r. Protection claims 1. Device for insertion into a formwork for a concrete component, for example a concrete wall, for storing reinforcing bars to be anchored in this concrete component with anchoring areas, which protrude with their anchoring areas over an outside of a storage element and are arranged with connecting parts to be bent out for connection to a concrete component to be connected later in the interior of the storage element, characterized in that at least two storage elements (2, 3) are attached at a distance from one another to a common surface side of a cut of flat material (9) and that the flat material (9) has a profile (11, 15) in the area between two adjacent storage elements (2, 3). , .,;-..· 2. Device according to claim 1, characterized in that the profiling is formed by projections (11, 15). 3. Device according to claim 2, characterized in that the projections (11, 15) are formed by permanent deformation of the flat material, preferably by embossing or deep drawing of the flat material (9). 4. Device according to one of claims 1-3, characterized in that the flat material is a metal sheet, preferably a steel sheet or a plastic flat material, preferably a plastic film. 5. Device according to one of claims 1-4, characterized in that the at least two storage elements (2, 3) are connected to the sheet material (9) in a parallel manner. ■ 6. Device according to one of claims 1-5, characterized in that the at least two storage elements (2, 3) are each formed by a box hollow profile (4, 5). 7., Device according to claim 6, characterized in that the open side of each storage element (2, 3) is covered by the flat material (9). 8. Device according to one of claims 1-7, characterized in that the reinforcing bars (7) are provided separately on each locking element (2, 3).