Ultimate Bearing Capacity And Tensile Force Demand On Headed Stud In C-SPW With One Side Concrete Encasement

Traditional reinforced concrete shear wall has greater strength,stiffness and fine integrity,but its behavior can be seriously deteriorated by the tension cracks and compression crushing under intense earthquake.The steel plate shear wall has greater strength,higher ductility,light weight,fine seismic behavior and enabled rapid construction,but the buckling of thin steel plate is a serious disadvantage of unstiffened steel plate shear wall.Composite steel plate shear wall(C-SPW)has the all advantages of reinforced concrete shear wall and steel plate shear wall.The C-SPW with reinforced concrete encasement attached to one or both sides of the steel plate using headed studs is an effective lateral load resisting system.With adequate thickness,the concrete encasements are able to prevent the prematurely buckling of steel plate effectively.Because it’s excellent shear stiffness and energy dissipation capacity,C-SPW is used as a lateral load resisting system in the high-rise steel structures.When the C-SPW undergo large inter-story drift,the headed studs between the steel plate and the concrete panel will bear tension force and bending moment due to steel plate buckling.The tension force demand of headed stud is an important issue in the design of C-SPW.Previous investigations are mainly relevant to the global behavior of C-SPW,while few researchers pay attention to it’s design method,and the tension force demand on headed stud is neglected.In this paper,an investigation on the tension force demand of headed stud in the C-SPW with reinforced concrete encasement attached to one side of steel plate is carried out by elasto-plastic finite element analyses.A novel finite element model is established using ABAQUS;24 C-SPW specimens are designed;the C-SPW’s headed stud tension force—drift ratio relationships and lateral resistance—drift ratio relationships are obtained;the effects of headed stud diameter,number of headed stud,steel plate thickness,concrete panel thickness and aspect ratio of shear wall on the stud tension force are analyzed.Based on the analysis results,an available formula for the tension force demand of headed stud in the design of C-SPW with single concrete panel attached to steel plate are proposed.