SU1686100A2 - Method for reinforcement of ferroconcrete building member - Google Patents

Abstract

The invention relates to the construction and can be used to reinforce reinforced concrete bending elements in the process of their restoration. The purpose of the invention is to increase the carrying capacity, eliminate the transfer of spacer forces from it to the columns and impart to the shelves of a building element a given design slope. The method of reinforcing a reinforced concrete building element includes removing beam 1 from supports 2, removing the destroyed part of concrete and the damaged section of reinforcement, reverse structural bending of the beam with its subsequent fixation, fixing to the ends of the beam in its lower part on both sides of the pull 14, voltage them and the creation of a horizontal surface in the upper part of the beam by stacking leveling elements 17. 16 Il. (Л г Ъу т-1 "г г sc sy а-гО. О о. К Fig. 16

Description

The invention relates to the construction, can be used to reinforce reinforced concrete bent elements in the process of their restoration and is an improvement of the invention according to the author. No. 1352023.

The purpose of the invention is to increase the bearing capacity of the building element, to eliminate the transfer of spacer forces from it to the columns and to give the shelves of the element a given design slope.

Fig. 1 shows a beam (a bolt) on supports with broken concrete in the lower stretched zone (the reinforcement is not broken); Fig 2 - the same (the reinforcement is broken); fig. 3 - the same, removed from the supports, laid side surface on the prepared base; figure 4 - the same. with concrete completely destroyed in the middle part and fixed in half; figure 5 is a diagram of the process of reverse bending of the beam; figure 6 - beam (bolt) with a completely destroyed reinforcement; 7 - the same, with the overlapped joints of the cut rebar; on Fig - isolated parts of the beam, laid at the required structural angle in a special form; Fig. 9 illustrates a beam restored and reinforced by a constructive bend; Fig. 10 shows a reinforced beam with horizontal tightening and leveling elements; figure 11

- type A in FIG. 10; in fig. 12 - type B on fig 10; on Fig - section bb In figure 10; on Fig - leveling element, front view; on Fig - type G on Fig; on Fig

-restored beam, mounted on supports.

The method is carried out as follows.

The destroyed reinforced concrete beam (bolt) 1 is removed from the supports 2, placed side surface on the prepared base 3, the destroyed part of concrete 4 is removed, the reinforcement 5 in the middle destroyed part of the beam is cleaned, fixing half of the element 1 around the perimeter with fixers 6.

The stops 7 are installed under the cleaned reinforcement 5 in the previously prepared sockets (not shown), and the reinforced concrete reinforcement is reversed

the beams using the force applied to the free end 8, for example, a jack 9. In case of rupture, the reinforcement 5 connects it with overlays 10, take out the stops 7 from the sockets, close them to prevent the repair concrete from falling into the sockets, install temporary formwork 11 and filling the cavity with polymer concrete 12.

At the ends of the beam 1 in its lower part with

two sides to the stops 13, fasten the fasteners 14 with tightening couplings 15.

In the upper part of the beam 1, leveling elements 17 are welded to the embedded parts 16, overlapping plates 18 are installed, they are welded through the embedded parts 19 and the joints of the plates 18 are monolithic. During operation, the reinforced concrete beam fully utilizes the work of concrete in compression, horizontal

puffings eliminate the occurrence of spacer forces on the columns, and increase the load-carrying capacity of the beam, and the installation of leveling elements allows the overlap to be horizontal.

The reinforcement method can be applied in the overhaul of industrial and civil buildings.

Claims (1)

Invention Formula The method of reinforcing concrete building element on auth. No. 1352023, characterized in that, in order to increase the bearing capacity of the building element, eliminate the transfer of spacer forces from it to the columns and impart to the shelves of the building element a given design slope, after reverse constructive bending and fixing it is mounted to the ends of the beam in its lower part is tightened on both sides, then they are stressed, and in the upper part of the beam they create a horizontal surface by stacking leveling elements. AND M A DL 1 Fig.Z Yu Yu 6 6 51 FIG. if 6 6 b 6 FIG. five Fiab Fie.11 B id 13 13  13 1 7J Fie.11 IS / J Figm FIG. 13 Brtf D Ae / 5