DE2226487B2 - Double concrete skin hollow wall element - has bar shaped spacers anchored to reinforcing units to simplify positioning - Google Patents

Abstract

The hollow wall element is made up from two parallel spaced concrete shells, with reinforcement, interconnected by connecting beams, and with intervening spacers ending flush with their external surfaces. The spacers (5) are bar-shaped and anchored to the reinforcement. Transverse bars (6) may be used for anchoring them tot he reinforcement in the concrete shells (1). Their ends can be enclosed in plastic hoods (7). This system enables the exact interval of the shells' exteriors to be reliably established, and ensures the positioning of the shell reinforcement with simple media.

Description

The invention relates to a cavity wall element consisting of two parallel and spaced apart from one another arranged, provided with reinforcement and connected to one another by connecting beams Concrete shells, between which spacers are flush with the outer surfaces of the concrete shell are arranged.

In a known hollow wall element of this type, the spacers are cuboid or mushroom-shaped Body trained. Due to its relatively large cross-section, due to its design, is not ensures that the spacers in the successive manufacture of the two the hollow wall element forming concrete shells, in which the spacers in the not yet hardened concrete of the placed in the first shell and lowered into the second shell after turning this shell through 180 ° reach the flush position with the outer surfaces of the concrete shells. As a result, theirs is more accurate Distance not guaranteed. In the case of the known hollow wall element, measures must also be taken must be taken to ensure the intended position of the reinforcement in each of the two concrete shells.

The invention has for its object to provide a cavity wall element of this type in which the exact distance of the shell outer sides achieved with certainty and the position of the shell reinforcement with simple means is ensured.

This object is achieved according to the invention in that the spacers are rod-shaped and are anchored to the shell reinforcement. This design of the spacers ensures that the spacers in the manufacture of the concrete shells in the flush with their outer surfaces, the exact distance between the outer sides of the shell arrive at the corresponding position. Simultaneously the position of the shell reinforcement is determined by the spacers ensured.

ίο It is particularly advantageous if the spacers be anchored to the reinforcement of the concrete shells with cross bars. The ends of the spacers can be enclosed by plastic caps that protect against corrosion.

An exemplary embodiment of the invention is shown schematically in the drawing. It shows

Fig. 1 is a vertical section along the line AA in Fig. 2,

Fig. 2 shows the inside view of one of the concrete shells with the reinforcement and a connecting beam and a spacer in the section, and

FIG. 3 shows a horizontal section along the line BB in FIG. 1.

In the figures:

1 the interconnected concrete shells,

2 longitudinal reinforcement bars,

3 transverse reinforcement bars,

4 a connecting beam,

5 a spacer,

6 a cross bar for anchoring the spacer to the longitudinal reinforcing bars, and
7 plastic caps of the spacers.
In the production of the hollow wall element designed according to the invention, first one

j5 concrete shell 1 poured, in addition to their reinforcement forming longitudinal and transverse reinforcement bars 2 and 3 and the connecting beams 4 each The end of the spacer 5 anchored to the reinforcement is also poured in. During the Rütteins the reinforcement with the spacers sinks into the concrete until the ends of the spacers have reached the bottom of the mold. After this concrete shell is made and its concrete set the second bowl is poured. The first bowl is turned over and onto the fresh concrete of the second Shell laid. As a result, the reinforcement of this shell with the connecting beams and the other Penetrate the end of each spacer in the concrete and are enclosed by this.

When vibrating, the reinforcement with the connecting beams and the spacers anchored to them sink together so far into the concrete that these ends of the spacers also touch the bottom of the mold achieved. This way, the exact distance between the outer surfaces of the shells will be achieved with certainty.

1 sheet of drawings

Claims (3)

Patent claims: 1. Cavity wall element, consisting of two parallel and spaced apart, reinforced concrete shells connected by connecting beams, spacers between which are flush with the outer surfaces of the concrete shells are arranged, characterized in that the spacers (5) are rod-shaped are formed and anchored to the shell reinforcement. 2. cavity wall element according to claim 1, characterized in that the spacers (5) are anchored to the reinforcement of the concrete shells (1) by means of cross bars (6). 3. cavity wall element according to claim 1 or 2, characterized in that the ends of the spacers (S) are enclosed by plastic caps (7).