Numerical 3D Finite Element Assessment of Bending Moment-Resisting Frame Equipped with Semi-Disconnected Steel Plate Shear Wall and Yielding Plate Connection

Steel plate shear walls (SPSWs) have advantages such as high elastic stiffness, stable hysteresis behavior, energy absorption capacity, and decent ductility. However, one of the main drawbacks SPSWs is their buckling under lateral loading. To address this issue, a simple practical solution in form using trapezoidal moment connection (PMC) narrow gap between infill columns presented. The PMC will act an absorber, similar to yielding steel plate, keep other structural members state. Extensive three-dimensional finite element (FE) models SPSW system were investigated monotonic cyclic results revealed that by separating from vertical boundary elements two edge stiffeners at both edges wall, same bearing capacity conventional can be achieved. In addition, increasing thickness 6.5 26 mm, load-bearing dissipation, stiffness increased approximately 2, 2.5, 3.2 times, respectively. It was also found flexural ratio beam had little effect on overall force–displacement behavior. it affect failure mechanism. Finally, tension field inclination angle for proposed range 30 35°.