Tension Force And Bending Moment Demand On Headed Stud In C-SPW With One Side Concrete Encasement And Different Aspect Ratio

Composite steel plate shear wall(C-SPW)consists of steel plate and reinforced concrete encasement on one or both sides of the steel plate using headed studs.The reinforced concrete encasement mainly provides a lateral restraint to prevent steel plate buckling before its yielding.The C-SPW effectively utilizes the properties of steel and concrete,improves the strength and ductility of shear wall,and has a good development prospect in the high-rise buildings.In this paper,the finite element model of C-SPW with concrete encasement on one side of the steel plate is established by ABAQUS.The responses of structural elements in32 C-SPW specimens with different aspect ratio under monotonic lateral load are investigated,the interactive action between different structural components and the performances of the infill steel plate,concrete panel and headed stud are analysed.The effects of panel aspect ratio,steel plate thickness,concrete panel thickness and headed stud diameter on the tensile force and bending moment of studs are studied.Based on the analysis results,the formulas for the demands on stud tension force and bending moment at the specified drift ratio 2% are proposed,which can be used for the ductile design of C-SPW under rare earthquake.