SU1717772A1 - Method of reinforcing ferroconcrete girder floor - Google Patents

Abstract

The purpose of the invention is to increase reliability when using the method in overlapping with profiled flooring. The method includes leading under the working fixture fittings, connecting to the working fixture by means of rod elements in the form of brackets, which are heated before connecting to the profiled flooring, and then tightened. 3 il.

Description

The invention relates to the construction, in particular, to methods for reinforced girder reinforced concrete floors with profiled flooring having stamped questioning riffs on the walls of the corrugations, which can be convex and concave.

Profiled flooring in this design serves as a permanent formwork and working reinforcement. The invention can be used in cases where it is necessary to increase the carrying capacity / reliability and the rigidity of the overlap.

There is a method of strengthening bending reinforced concrete elements by adding additional metal supporting structures.

The disadvantage of this method is increased metal consumption.

There is a method of reinforcing concrete floors with additional supports, increasing the cross section of elements, etc.

The disadvantage of this method is that when reinforcing the overlap, complex and cumbersome structures are obtained that reduce the useful volume of the building.

Closest to the present invention is a method for strengthening a flexible iron-concrete element, comprising attaching additional metal rods by means of rod elements to the working reinforcement of the element and their subsequent tension.

The disadvantages of this enhancement method are:

transfer to the anchoring zone of the working reinforcement (profiled flooring) forces from reinforcement rods, which causes the danger of disrupting the joint operation of the reinforcement, destruction of the element by anchoring the reinforcement, reduces the reliability of the reinforcement, limits the length of the reinforcement section;

Attaching the reinforcing rods to the steel profiled flooring is difficult due to the small thickness of the flooring (less than 1 mm), since burn-ups are inevitable, the evaporation of the protective coating of the flooring, which must be restored after welding, increases labor costs and reduces the reliability of the reinforcement.

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The purpose of the invention is to increase reliability when using the method in overlapping with profiled flooring.

This goal is achieved by using staples as core elements, which are heated before joining to the profiled flooring, and then tighten.

FIG. 1 shows a fragment of reinforced overlap with concave reefs, cross section; in fig. 2 - overlap fragment with convex reefs, cross section; in fig. 3 - reinforced overlap along the span, section.

The method is carried out as follows.

When reinforcing a slab consisting of a concrete slab 1 and steel profiled flooring 2 with anchoring reefs 3 at the ends of the reinforcement section. set preheated

staples 4. with ends 5 that repeat the reef profile. Then, additional reinforcing rods 6 are fastened to the brackets, which are tensioned, for example, by rotating the sleeve 7 with the thread.

Ingenuity formula

The method of reinforcement of a girder reinforced concrete slab, including bringing the tension under the working reinforcement, its voltage, connection with the working reinforcement by means of rod elements with voltage transmission to the working reinforcement, is different from that. that, in order to increase reliability when using the method in overlapping with profiled flooring, brackets are used as core elements, which are heated before joining with the profiled flooring, and then tightened.

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Claims (1)

Claim The method of reinforcing beam reinforced concrete floors, including summing up the working reinforcement of the tightening, its voltage, connection with the working reinforcement by means of rod elements with the transmission of voltage to the working reinforcement, characterized in that what. in order to increase reliability when using the method in overlapping with a profiled flooring, brackets are used as the core elements, which are heated before connecting to the profiled flooring, and then the tension is tightened. Figure 2