Analysis On The Cooperative Performance Of Anti-buckling Steel Plate Shear Wall With All-steel Cover Plate

With the gradual increase of high-rise buildings and the trend of assembly construction in recent years,buckling-restrained steel plate shear walls are gradually applied to building structures due to their advantages of high assembly degree,high lateral stiffness,high shear bearing capacity,and being able to continue to bear loads after yielding.The traditional buckling-restrained steel plate shear wall connects the concrete cover plate and the embedded steel plate together.The concrete cover plate restrains the out-of-plane deformation of the embedded steel plate and improves the overall performance of the component.However,the steel plate and the cover plate are easy to jointly bear horizontal load,the concrete cover plate is easy to crack and crush,the steel plate and the cover plate are difficult to work together,and the working efficiency of the overall structure is low.In order to better promote the development of the buckling-restrained steel plate shear wall and promote its application in engineering,To further improve the restraint effect of the cover plate on the embedded steel plate,improve the overall lateral stiffness and shear bearing capacity of the structure,and optimize the structural use effect,this paper proposes an all-steel cover plate buckling-resistant steel plate shear wall,and studies the working performance of the whole structure around its local components.The main research work is as follows:The synergistic mechanism of all-steel buckling-resistant embedded steel plate and all-steel cover plate was studied.The finite element software ABAQUS is used to establish a model to study the stress distribution law of all-steel buckling-resistant embedded steel plate and all-steel cover plate.The deformation characteristics and failure mechanism of the embedded steel plate are analyzed.The influence rules of embedded steel plate height-to-width ratio,height-to-thickness ratio,stiffness ratio and bolt spacing parameters on the overall structural bearing capacity are summarized.The synergistic mechanism of all-steel buckling-resistant embedded steel plate and steel frame is studied.The finite element software ABAQUS is used to simulate the all-steel buckling-restrained steel plate shear wall,and the connection form in the model is two-sided connection,thus the action mechanism of all-steel buckling-restrained steel plate and steel frame is studied.The internal force transfer process,stress distribution,elastic-plastic development law,and the influence of parameters such as the ratio of span to height of embedded steel plate and stiffness of steel frame on the overall structural co-bearing capacity under horizontal load are analyzed.Seismic performance and design method of all-steel buckling-resistant steel plate shear wall.The yield mechanism and failure mechanism of all-steel buckling-resistant steel plate shear wall are theoretically analyzed.By using finite element software ABAQUS to simulate the cyclic loading of all-steel buckling-restrained steel plate shear wall,the hysteretic curve and skeleton curve are obtained,and the seismic performance of all-steel buckling-restrained steel plate shear wall is better.This paper analyzes the influence of embedded steel plate height-to-thickness ratio,span-to-height ratio,stiffness ratio of embedded steel plate and all-steel cover plate on the hysteretic performance of the wall,establishes the design method of seismic bearing capacity of all-steel buckling-resistant steel plate shear wall,and gives a simplified calculation formula.In order to facilitate the subsequent study of all-steel buckling-resistant steel plate shear wall,an equivalent simplified model of the wall is given.