Shear capacity and lateral stiffness of composite plate shear walls‐concrete encased under cyclic loading. (18th June 2022)

• Record Type: Journal Article
• Authors: Wang, Huafei; Gu, Qiang; Qi, Yi
• Is Part Of: Structural design of tall and special buildings. Volume 31:Number 15(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-06-18
• Subjects: C‐PSW/CE -- cyclic loading -- lateral stiffness -- shear capacity -- shear resisting mechanism; Tall buildings -- Design and construction -- Periodicals; Structural design -- Periodicals; 690.1
• DOI: 10.1002/tal.1972
• Languages: English
• ISSNs: 1541-7794

Abstract

Summary: Composite plate shear walls‐concrete encased (C‐PSW/CE), consisting of the steel plates and concrete encasements on one or both sides of the plate, are an excellent lateral force resisting system. This paper theoretically and numerically reveals the shear resisting mechanism of C‐PSW/CE under cyclic loading. The steel web resists the lateral force through in‐plane shear before buckling, and the concrete encasements resist lateral force by diagonal compression field action. As the displacement increases, the shear force ratio of the steel web plate increases before yielding in shear and that of concrete encasements reduces. The shear force ratios of the steel web plate and concrete encasements remain essentially constant after yielding of the steel web. Considering the shear contribution of the concrete encasements, the formula is proposed to evaluate the shear capacity of C‐PSW/CE. Based on the principle of virtual work, the equation is proposed to predict the lateral stiffness of C‐PSW/CE under cyclic loading, accounting for the concrete deterioration due to cyclic effect.