Combination Confined Double Steel Plate Concrete Shear Wall and Its Construction Method

Abstract

The invention discloses a combined restraint double steel plate concrete shear wall. The load-bearing steel plates are welded into elongated steel pipes and studs are welded on the inside, and the middle is filled with concrete to form a double steel plate concrete shear wall. The lower part of the double steel plate concrete shear wall A layer of non-bonding material is wrapped outside the plastic zone; the restraint steel plate is patterned steel plate welded into a rectangular restraint steel pipe, and the pattern side of the steel plate is the inner side of the restraint steel pipe. Constrained steel pipes are placed outside the non-bonded material section at the bottom of the double steel plate concrete shear wall, and self-leveling mortar is poured between the constrained steel plate and the unbonded material, and the constrained steel plate and self-leveling mortar form a combined constrained plate; It runs through the restraint steel pipe and fixes both ends with nuts. The structure of the invention can effectively suppress the local buckling of the load-bearing steel plate and provide strong constraints on the concrete inside the steel plate, improve the bearing capacity and deformation capacity of the shear wall, and realize the application of high-strength concrete in the double-steel plate concrete shear wall. The invention also discloses its construction method.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a composite constrained double steel plate concrete shear wall and a construction method thereof. Background technique [0002] Double steel plate concrete shear wall is a new type of high-efficiency composite member developed in recent years. It is composed of outer steel plates on both sides and inner concrete in the middle, and through a certain connection structure to ensure that the outer steel plates and inner concrete work together . Through the combination effect, the double steel plate concrete shear wall can give full play to the material properties of both steel plate and concrete. The steel plate in the double steel plate concrete shear wall can not only directly bear the external load, but also provide lateral restraint for the inner concrete, so that the concrete in the tube is in a stress state of three-dimensional compression, and the compressive stre...

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Problems solved by technology

The use of high-strength concrete in vertical load-bearing members of high-rise building structures is an important technical means to reduce the cross-sectional size of vertical load-bearing members, but the ductility of high-strength concrete is poor, and steel plates cannot provide sufficient restraint for high-strength concrete. To a large extent, it restricts the application of double-plate high-strength concrete shear walls in practical engineering

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