Structure and construction method of cast-in-site style welded steel frame composite concrete shear wall

Abstract

The invention relates to a structure and a construction method of a cast-in-style welded steel frame composite concrete shear wall. The structure comprises an indoor concrete layer, an outdoor concrete layer and a wire frame insulation sandwich board. The wire frane insulation sandwich board is coated between the indoor concrete layer and the outdoor concrete layer. At least two rectangular and groove-typed cantilever holes are arranged at the top of the sandwich board, and each cantilever hole is provided with a U-shaped cantilever anchor bar which penetrates through the sandwich board and a floor slab to be fixedly connected with the floor slab. The construction method includes site preparation work, binding of load-bearing steel bars of a wall body and edge member steel bars, custom processing of the sandwich boards, installation of the sandwich boards, pavement of template positioning pieces and wall bushings, fixation of water and electric pipes inside the wall body, binding of ordinary blocks on both sides of the wall body steel bars, erecting of the templates, pouring of the concrete, removing of the templates and concrete curing. Since a series of composite wall construction methods are adopted, problems existing in the prior art are solved, and a composite heat preservation technology is improved.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a structure and a construction method of a cast-in-place welded grid frame composite concrete shear wall. Background technique [0002] The current thermal insulation form of the shear wall is mainly external thermal insulation. The design service life of the thermal insulation layer is only half of the main structure. It needs to be maintained and replaced many times in the whole life cycle of the building, which will generate a lot of construction waste and cost a huge amount of money. Seriously affect the function of use. In addition, most of the external insulation is made of combustible materials, which poses a huge fire hazard. Moreover, the traditional external thermal insulation construction is all manual operation, the quality stability is low, and it cannot meet the development trend of building factoryization. In the emerging composite thermal insulation technolo...

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Problems solved by technology

[0002] The current thermal insulation form of the shear wall is mainly external thermal insulation. The design service life of the thermal insulation layer is only half of the main structure. It needs to be maintained and replaced many times in the whole life cycle of the building, which will generate a lot of construction waste and cost a huge amount of money. Seriously affect the function of use

In addition, most of the external insulation is made of combustible materials, which poses a huge fire hazard

Moreover, the traditional external insulation construction is all manual operation, the quality stability is low, and it cannot meet the development trend of building factoryization

In the emerging composite thermal insulation technology, the cast-in-place composite concrete wall technology is difficult to control the position of the thermal insulation layer and the section size of the stressed wall, the linear thermal bridge at the floor is difficult to solve, the casing through the wall is prone to water seepage, and the force transmission path of the welded steel grid is not good. Technical problems such as clarification and no minimum requirements for the durability and fire resistance of the outer concrete layer hinder the widespread implementation of composite insulation

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