Re-jacking reinforcing structure for post-cast belt cantilever and construction method of structure

Abstract

The invention discloses a re-jacking reinforcing structure for a post-cast belt cantilever and a construction method of the structure. The structure can solve the problems that since traditional re-jacking modes of post-cast belt cantilever structures most adopt steel pipe scaffolds for supporting, re-jacking cannot be carried out in a rear casting belt area in time or in place after original full-grounded supporting scaffolds are dismantled, correspondingly the stress change of a cantilever end of a beam plate is caused, and even a plate surface is cracked because of uneven settlement of thecantilever beam plate. The structure comprises a PVC pipe, concrete, wood strips and a rotating sleeve, wherein concrete is poured into the PVC pipe; the upper and lower ends of the PVC pipe are fixedthrough the wood strips; the rotating sleeve sleeves the middle of the outer wall of the PVC pipe; a joint is welded to the middle of the side wall of the rotating sleeve, the side wall of the jointis provided with a clamping groove which is used for butting fixation with steel pipes, a power supply is embedded in the outer wall of the joint, and the inner walls of the upper and lower sides of the clamping groove are provided with clamping covers respectively.

Description

technical field [0001] The invention relates to a back-roofing reinforcement structure with a post-casting cantilever, in particular to a post-casting back-topping reinforcement structure with a cantilever and a construction method thereof. Background technique [0002] At present, at the construction site, most structures are designed as simply supported beams and slabs. Due to the indwelling of the post-cast belt, the structural force is transformed into a cantilever beam and slab. The resulting structural deformation causes cracks at the root of the cantilever of the beam and slab, reducing the risk of leakage in the later stage of the structural slab. In order to ensure the stress requirements of the structure, the beam slab and the post-cast belt formwork support system are regarded as the same system. After waiting for the beam slab concrete on both sides of the post-casting belt to reach the strength of form removal, when removing the full support scaffolding in the ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a back-to-roof reinforcement structure for post-cast cantilever and its construction method, which can solve the problem that most of the traditional back-to-top methods of post-cast cantilever structures use steel pipe scaffolding to support the method. The disadvantage of this method is that , after the original full hall supporting scaffolding was removed, the post-casting belt area was not backed up in time or not in place, resulting in changes in the force on the cantilever end of the beam slab, and even causing cracks on the slab surface due to uneven settlement of the cantilever beam slab

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