Seismic Behavior And Experimental Study On Prefabricated Double-Stage Energy-Dissipation Anti-Buckling Steel Plate Shear Wall

As an excellent anti-lateral force system,the anti-buckling steel plate shear wall has excellent energy-dissipation performance,but the disadvantage is that the lateral resistance stiffness is small and local buckling is prone to occur.The combined steel plate shear wall has higher lateral stiffness and bearing capacity,but the corners are easily crushed and the energy-dissipation performance is poor.To solve the problems in the existing steel plate shear wall,this paper takes the energy-dissipation multi-component,multi-stage,of prefabricated double-stage energy-dissipation anti-buckling steel plate shear wall,which can increase rigidity,bearing capacity and bear vertical load,as the research object,mainly including the construction method,influence parameters and experiment on the prefabricated double-stage energy-dissipation anti-buckling steel plate shear wall,and the specific research contents are as follows:The design of prefabricated double-stage energy-dissipation anti-buckling steel shear wall is designed,and the calculation formulas of the stiffness and bearing capacity of the components working together are proposed.The prefabricated double-stage energy-dissipation anti-buckling steel shear wall is divided into four components,and the component composition and cooperative working mechanism of prefabricated double-stage energy-dissipation anti-buckling steel plate shear wall are analyzed.The formula for calculating stiffness and bearing capacity is given,and the design concept is provided to achieve the goals of double-stage energy-dissipation and high bearing capacity.Finally,the design of the connection parts of the test piece is rationalized according to the design goal.The influence of different design parameters on the overall seismic performance of the shear wall is studied,and the optimal design parameters of prefabricated double-stage energy-dissipation anti-buckling steel shear wall are determined.The ABAQUS finite element software is used to analyze the influence mechanism of the energy-dissipation and bearing steel plate thickness and opening shape of the high-yield point.The numerical analysis results show that the use of Q195 steel will not affect the target of the double-stage energy dissipation and will not change the design yield order of the prefabricated double-stage energy-dissipation anti-buckling steel plate shear wall;the thickness range of the energy-dissipation and load-bearing steel plate should be between the effective bearing capacity and not before the concrete failure;The shape of the opening of the energy-dissipation and load-bearing steel plate has a great influence on the energy-dissipation and bearing characteristics of the energy-dissipation and load-bearing steel plate.And the parallelogram hole has a higher bearing capacity but the energy dissipation performance is worse than the rectangular opening.Experimental studies were carried out on prefabricated double-stage energy-dissipation anti-buckling steel plate shear wall.Based on the design concept and parameter analysis of prefabricated double-stage energy-dissipation anti-buckling steel plate shear wall,two prefabricated double-stage energy-dissipation anti-buckling steel plate shear walls and one traditional anti-buckling steel plate shear wall test were designed and performed.By analyzing their test phenomenon,hysteresis curves,skeleton curve,and energy dissipation performance,the results show that compared with the traditional anti-buckling steel plate shear wall,it has higher initial stiffness and bearing capacity under small earthquakes.Under moderate earthquakes,the energy-dissipating bearing steel plate yields first,achieving the design goal of double-stage energy-dissipation,while making the embedded steel plate yield lag.Under large earthquakes,the energy-dissipating bearing steel plate failed,and the structure was degraded into a traditional anti-buckling steel plate shear wall with excellent energy-consuming performance.