Theoretical Study and Nonlinear Finite Analysis of Four-Line Restoring Force Model for Double-Superimposed Slab Shear Walls

This paper is concerned with the seismic behavior of a superimposed slab shear wall. Based on test results specimens under low cyclic reversal loading, formulas respect to top displacement and capacity wall in consecutive loading process are derived. The concrete grade differentiation between prefabricated layer cast-in-site considered improve calculating precision. With help these equations, extent participation layers different stages revealed, demonstrating great confirmation results. Two ideal conditions, utterly without connective effect combined interface, investigate action bond–slip effect. On this basis, finite element analysis completed framework OpenSees. Its quadrilinear restoring force model, consideration stiffness degradation pinching effect, established by various feature points from theoretical derivation capacities stages. rationality model testified satisfactory agreement simulation