SU1250631A1 - Reinforcement member - Google Patents

Description

 one

The invention relates to reinforcing elements for prestressed reinforced concrete structures with a variable compressive force.

The aim of the invention is to reduce the labor-intensiveness of the reinforcement voltage to create a compressive force variable along the length of the reinforced concrete structure.

FIG. 1 shows the reinforcing element in the composition of the reinforced concrete structure, general view; in fig. 2 - intermediate and terminal anchors; in fig. 3 shows section A-A in FIG. 2; FIG. A shows the place where the armature transitions from the end anchor to the distribution element; in fig. 5 is a section BB in FIG. four; Fig 6 - section bb in fi 4.

The reinforcement element contains a bundle of reinforcement 1, intermediate 2 and end 3 anchors, fixed after concrete hardening in the body of the reinforced concrete structure 4. Anchors 2 and 3 are made of pipe sections 5 and distribution rings 6 fixed on them with grooves 7 for valve 1. Pipe sections 5 and the rings 6 can be made of prefabricated sections, which are halves in the longitudinal direction of these elements.

Distribution elements 8 with grooves 9 for reinforcement 1 are installed between anchors 2 and 3. The reinforcement beam is divided into two parts, one part of which is fixed to the top of intermediate anchor 2 using wire sleeves 10 and passed through distribution element 8 into the end anchor tube 3, in which the reinforcement is enclosed in a shell P with a distribution ring 12 at the end having grooves 13. Another part of the reinforcement bundle is passed through the pipe of the intermediate anchor 2 and passed through the distribution element 8

50 & 312

and a ring 12 on top of the end anchor 3 and secured thereto by means of wire ties 10. Behind the end anchor 3, both parts of the bundle of mattress 5 are aligned with each other.

The reinforcing element is used as follows.

Before concreting the reinforced concrete structure 4, the ends of the bundle of reinforcement 0 rounds 1 are fixed in the stops of the tension stand and tensioned. After concreting and a set of necessary strength by concrete, the tension of the reinforcement 1 is released;

15, a part of the reinforcement bundle, fixed on the end anchors 3, creates a corresponding compression of the concrete of the structure 4 in the areas between these anchors, and another part of the reinforcement bundle,

20 is passed through the pipes of the anchors 3 and is isolated from the concrete by the shells 1 1, slips in sections from the ends of the structure 4 to the intermediate anchors 2 on which this

25 part of the reinforcement bundle is fixed,

creating compression of concrete only between these anchors.

Thus, when the tension of the reinforcement is released, compression of the concrete with a full beam is created only in the area between the intermediate anchors, and in the areas between the intermediate and end anchors - only a part of the beam.

35

The present invention makes it possible to reduce the labor intensity of the reinforcement voltage to create a compressive force variable across the length of the reinforced design by eliminating stepwise tension and tempering of the reinforcement by stretching the entire beam at once and redistributing the reduction force of the concrete only

45 bypass parts of the bundle of reinforcement between the intermediate and end anchors.

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FIG. b

Claims (1)

REINFORCEMENT ELEMENT containing a reinforcement bundle, end and intermediate anchors in the form of pipes and distribution rings fixed to them with grooves for reinforcement, part of the bundle of which is fixed on the top of the anchors and the other part is passed through their pipes, characterized in that, for the purpose of reduction the complexity of the reinforcement voltage to create a compression force that is variable along the length of the reinforced concrete structure; it is equipped with distribution elements installed between the end and intermediate anchors with grooves through which part of the beam ar Aturi fixed on top of the intermediate anchor is directed into the pipe end of the anchor and passed through the intermediate tube anchor the other part of the beam is directed at the upper end of the anchor and fastened on it, the two parts of the beam for the terminal fittings are aligned with one another anchor. fig 1