Bidirectional laminated slab prefabricated bottom plate abutted seam structure and construction method thereof

Abstract

The invention provides a two-way laminated slab prefabricated bottom plate abutted seam structure and a construction method of the two-way laminated slab prefabricated bottom plate abutted seam structure. The two-way laminated slab prefabricated bottom plate abutted seam structure comprises prefabricated bottom plates, a cast-in-place layer, a bent steel bar assembly, reinforcing bars and a plurality of distribution bars, abutted seams are formed between the prefabricated bottom plates, the reinforcing bars are arranged in the cast-in-place layer, and the distribution bars are evenly distributed in the prefabricated bottom plates and the cast-in-place layer. The bent reinforcing steel bar assemblies convexly extend from the abutted seam of the prefabricated bottom plate to the cast-in-place layer, and the bent reinforcing steel bar assemblies are vertically connected with the distribution reinforcing steel bars; and the reinforcing bars and the distribution bars are vertically connected with each other. Compared with the prior art, the two-way laminated slab prefabricated bottom slab abutted seam structure does not need die holing, the production efficiency is improved, die amortization is reduced, and the laminated slab cost is reduced.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a bidirectional laminated slab prefabricated floor joint structure and a construction method thereof. Background technique [0002] In prefabricated buildings at this stage, laminated floors are generally used. The disadvantages of the current practice are as follows: (1) When the prefabricated floor of the laminated floor is produced, the mold needs to open holes, resulting in a decrease in the rigidity and strength of the mold, variability, and a reduction in the number of turnovers, and it cannot be used universally. The amortization increases, and the cost of the laminated slab increases; (2) The width of the post-cast belt of the laminated slab is ≤300mm, so that the reinforcement of the laminated slab is intelligently used with φ8mm steel bars, otherwise the anchoring requirements cannot be met, resulting in the floor with larger reinforcement. According to t...

AI Technical Summary

Problems solved by technology

The disadvantages of the current practice are as follows: (1) When the prefabricated floor of the laminated floor is produced, the mold needs to open holes, resulting in a decrease in the rigidity and strength of the mold, variability, and a reduction in the number of turnovers, and it cannot be used universally. The amortization increases, and the cost of the laminated slab increases; (2) The width of the post-cast belt of the laminated slab is ≤300mm, so that the reinforcement of the laminated slab is intelligently used with φ8mm steel bars, otherwise the anchoring requirements cannot be met, resulting in the floor with larger reinforcement. According to the design of laminated slabs; (3) The integral post-casting belt needs to be separately provided with supports, which leads to the inability to connect the supports of the laminated slabs on site, resulting in complex formwork on site and reduced support stability; (4) The post-casting belt is wide, and it is difficult to It is easy to expand the mold and leak grout, and it is impossible to realize the plaster-free bottom of the laminated slab. The post-processing is complicated, and the purpose of cost reduction and efficiency increase cannot be achieved; The cast-in-place layer of the plywood needs to be at least 80mm, and the total thickness needs to be 140mm thick. The increase in the thickness of the floor slab will lead to an increase in the structural reinforcement of the floor slab and increase the self-weight of the main body. The beam, column reinforcement, and foundation costs will increase accordingly, resulting in waste of cost and materials; (6) There are no narrow joints in the current specifications and atlases, which cannot eliminate the cumulative errors in the generation and installation of prefabricated floor panels. High construction accuracy is required and installation is difficult

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