Study On Seismic Behavior Of Semi-rigid Frame Buckling Restrained Steel Plate Shear Wall Structure

One of the key contents of modern high-rise building design is the semi-rigid frame-buckling-resisting steel plate shear wall structure,which combines the advantages of semi-rigid frame and anti-flexion steel plate shear wall.The buckling-resisting steel plate shear wall structure has performance advantages such as good hysteretic performance,high bearing capacity,large energy consumption,large side stiffness resistance,and insignificant stiffness degradation,etc.,combined with its simple construction and high material utilization rate,it has become a Important new earthquake resistance system.Compared with the traditional thin steel plate shear wall structure and the buckling-resilient steel plate shear wall structure,the traditional thin steel plate shear wall structure has some irresistible defects,such as large noise,severe hysteresis curve pinching,poor fire performance,and the side column Unfavorable and so on.At present,the research on semi-rigid frames is not mature,and some traditional forms of beam-column nodes have not explored their semi-rigid nature.The research results of domestic and foreign scholars on the steel plate shear wall and semi-rigid frame have laid a certain foundation for the research work of this paper.This paper undertakes previous studies and combines steel plate shear walls with semi-rigid frames to investigate its seismic performance under the joint action.The basic theory of elastic buckling of plates and the basic theory of semi-rigid connections are taken as basic theoretical support.The basic research methods of nonlinear theory are used to study the seismic performance of semi-rigid frame-buckling steel plate shear wall structures.In order to more clearly understand the seismic behavior of the semi-rigid frame-buckling steel plate shear wall structure,the finite element software ABAQUS was used to design and establish a semi-rigid frame-restrained steel plate shear wall structure model and a semi-rigid frame-steel plate shear force.In the wall structure model,the two models are subjected to force analysis under cyclic loading.The results are compared and analyzed: The hysteretic performance and energy dissipation performance of the semi-rigid frame-buckling steel plate shear wall structure are better than that of the semi-rigid frame-steel plate shear wall structure,and the bearing capacity is large,and the side stiffness resistance is large;The installation of the anti-buckling concrete slab helps the inner steel plate to be more reasonable in stress,improves the utilization rate of the embedded steel plate,and plays a certain role in protecting the frame column.The connection performance of the semi-rigid frame-buckling steel plate shear wall structure has important research significance as an important factor influencing the seismic performance.The frames of different beam-column connection types are subjected to force analysis under static load to prove whether the nodes are semi-rigid and determine the relative stiffness of the nodes;the frames of different beam-column connection types are subjected to force analysis under cyclic loading to analyze different columns and columns.The seismic performance of the connection form frame is combined with the analysis of the seismic performance of shear wall structures with different joints under cyclic loading.The results show that: The connection performance has an influence on the hysteresis curve,skeleton curve,energy dissipation performance,stiffness and stiffness degradation of the structure.The semi-rigid frame-buckling-resisting steel plate shear wall structure is a structure with many influencing factors.This paper analyzes the ratio of height to thickness of the inlaid steel plate,the bolt arrangement method,the axial ratio of the frame column,the number of concrete plates on one side,and the anti-buckling method.The influence of factors such as the rigidity of the frame column and the initial geometrical defect of the embedded steel plate on the seismic performance of the structure.In this paper,the research on the anti-seismic performance of the semi-rigid frame-buckling steel plate shear wall structure is expected to play an active role in the subsequent study of this structure,and brings some convenient reference for the design workers.