Buckling-restrained steel plate shear walls with out-of-plane deformation space

Abstract

The invention discloses a buckling restrained steel plate shear wall with out-plane deformation space and belongs to the technical field of structural engineering. The shear wall comprises an embedded steel plate, concrete cover plates, edge members and at least eight longitudinal stiffening ribs, wherein the edge members comprise edge beams and edge columns; the embedded steel plate is fixedly connected with the edge beams; the longitudinal stiffening ribs are symmetrically fixed on two sides of the embedded steel plate; every two adjacent longitudinal stiffening ribs on the same side form a longitudinal stiffening rib group; the distance between every two adjacent longitudinal stiffening rib groups ranges from 200 to 300 mm; all the concrete cover plates are fixed on the embedded steel plate between the two longitudinal stiffening ribs of each longitudinal stiffening rib group through connecting pieces; clearances are reserved between the concrete cover plates and the edge members, the reinforcing parts of the longitudinal stiffening ribs and the embedded steel plates. The shear wall has higher lateral stiffness and later bearing capacity and can effectively dissipate earthquake energy under the action of a rare earthquake.

Description

technical field [0001] The invention relates to the technical field of structural engineering, in particular to an energy-dissipating shear wall with relatively large lateral rigidity and relatively high late-stage bearing capacity. Background technique [0002] Steel plate shear wall is a new type of lateral force resistance structure developed in the 1970s. It has good ductility and ductility, large lateral stiffness, strong energy dissipation capacity, and outstanding seismic performance. Developed countries such as the United States and Japan have taken the lead in applying it to practical projects. In recent years, some high-intensity areas in my country have gradually begun to apply it, such as: Tianjin Tower in Tianjin, Shanghai Jinjiang Hotel, etc. In the early design of steel plate shear walls, the elastic buckling load was used as the limit state of the bearing capacity, which resulted in very thick steel plates or very dense stiffeners, resulting in waste of mater...

AI Technical Summary

Problems solved by technology

In the early design of steel plate shear wall, elastic buckling load was used as the limit state of bearing capacity, which resulted in very thick steel plates or very dense stiffeners, resulting in waste of materials and increased costs

However, for the thin steel plate, its lateral force mainly comes from the tension band formed after the steel plate buckles. The existence of the tension band makes the hysteretic curve of the thin steel plate wall have a serious pinching phenomenon. the sound of

[0003] From the perspective of the implementation effect of the traditional buckling-resistant steel plate shear wall, due to the large normal wall area, a prefabricated concrete cover plate is easy to crack during production, transportation and construction, and there are difficulties in on-site installation

In addition, from the perspective of the force effect, due to the close contact between the concrete cover slab and the thin steel plate, there is no gap between the two, and the buckling of the embedded steel plate is constrained by the concrete cover slab from the beginning, so that the concrete cover slab is always in place. In the bending state, the concrete cover slab is overburdened, and the concrete cover slab may be damaged prematurely, and the restraining effect on the embedded steel plate is weakened accordingly.

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