Experimental Study On Seismic Behavior Of RC Framework Reinforced With Thin Steel Plate Shear Walls Connected On Both Sides

As a new type of high-efficiency anti-side force structural components,compared with reinforced concrete shear wall,it has the advantages of improving structural elongation,improving structural stiffness,superior seismic performance,and can effectively reduce the thickness of the shear wall,reduce the structural self-weight and increase the use of the building space.The two sides of the steel shear wall through welds or high-strength bolts only connected to the frame beam,compared with the foursided connection steel shear wall to eliminate the dependence of the frame column,avoiding the premature destruction of the frame column;By adjusting the size or number of wall panels,you can easily change the stiffness and carrying capacity of the shear wall.This paper studies the seismic performance of RC frame structures strengthened by two-sided steel plate shear wall using a combination of experimental research and finite element analysis theory for the two-sided steel plate shear wall,which provides a basis for the application of this type of structure in engineering.Key research content and research results:(1)Strengthen the severe damage RC frame with a thin steel shear wall on both sides,form a frame-the structure of the thin steel shear wall connected on both sides,and study the static force test,The hysteresis and skeleton curves are plotted,the lateral stiffness,carrying capacity,duction coefficient,energy consumption performance,load capacity degradation,peak stiffness degradation and deformation characteristics of the steel shear wall are analyzed,and the test results of the original RC frame are compared and analyzed.The results show that the load capacity,anti-side stiffness,ductile and energy consumption of the RC frame with heavy damage can be significantly improved by adding two sides to connect the thin steel shear wall,and the apex displacement angle of the test piece is 1/73 when the test part reaches the peak load.,the RC frame is not visibly damaged;the addition of thin steel plate shear walls on both sides has a reasonable yield mechanism,which is shown as the steel plate shear wall yields first,the frame beam end cracks later,and the frame column has not been seriously damaged during the entire loading process Seismic requirements,steel plate shear wall plays a good role as the first line of defense,and can reduce the damage of the frame.(2)The nonlinear static analysis of the test specimen is carried out using SAP2000 finite element software,which is compared with the test results.Further analysis of the steel shear wall height ratio,high-thickness ratio parameters on the steel plate shear wall carrying capacity,the load displacement skeleton curve,stress cloud map and equivalent steel plate deformation map.The results show that the results of finite element solution are in agreement with the experimental results well,and the established finite element model can be used for nonlinear analysis of this kind of structure,which provides a basis for the subsequent expansion analysis.With the increase of steel plate thickness,the carrying capacity of the structure is increasing continuously,and with the increasing width of the steel plate,the extreme load of the structure is also increased.