Seismic Behavior Of Symmetrical Interactive Trapezoidal Steel Plate Shear Walls

In recent years,corrugated steel plate shear wall structure has become one of the research hotpoints in the field.Compared with flat thin steel plate shear wall,under the action of large earthquake reciprocating load,the seismic input energy can be effectively dissipated to reduce structural seismic damage.According to domestic and foreign literature,the single-layer corrugated steel shear wall has large buckling deformation and bulging wall,which is not good for the stability of the structure outside the plane and affects the use function.In this paper,a new type of shear wall is proposed to be constructed by using symmetrical and interactive trapezoidal corrugated steel plates,and a series of researches are carried out on it.The main contents are as follows:Firstly,the buckling characteristics of corrugated steel plate were analyzed by orthogonal anisotropic plate theory,and the formulas for calculating the lateral stiffness of corrugated steel plate with different inclined angles of corrugated edges were deduced according to the relevant formulas of European code.Based on the above theoretical research,a symmetric interactive trapezoidal steel plate shear wall model was established through the finite element analysis software ABAQUS,and the reliability of the model was verified by comparing it with the measured data of relevant tests.Secondly,based on the first-order elastic buckling model of symmetric interactive trapezoidal steel plate shear wall,the influence of the inclined Angle,aspect ratio,height ratio,wavelength and amplitude of the curved edges on its critical buckling load is analyzed.(2)Pushover analysis method was used to investigate the relationship between the above parameters and the monotonic lateral strength,and a formula for calculating the lateral strength of symmetric interactive trapezoidal steel plate shear walls was proposed.(3)Reveals the stress development and deformation process of components under monotonic load.Finally,based on the hysteretic performance analysis model of symmetrical interactive trapezoidal steel plate shear wall,the influence rules of different parameters on its hysteretic performance,stiffness degradation,energy dissipation capacity and ductility were analyzed,and the stress development and deformation of components under low-cycle reciprocating loads were analyzed.To sum up,symmetrical interactive trapezoidal steel plate shear wall is a kind of green,safe and reliable component with good energy dissipation and shock absorption effect,which provides preliminary design reference for practical engineering application.