Lateral Performance of Semicircular Corrugated Steel Plate Shear Wall with Edge Stiffeners

A semicircular corrugated steel plate shear wall with edge stiffeners (CSPSW) was proposed to improve the premature buckling and small out of plane stiffness of flat steel plate shear wall. Theoretical elastic initial stiffness and bearing capacity were derived according to the simplified mechanical model which based on the mechanical characteristics of the CSPSW, and the elastic buckling critical load formula of the proposed steel plate shear wall was also given. Elastic buckling analysis and nonlinear pushover analysis of 22 single-story CSPSW were carried out by using the finite element software ABAQUS, the validity of the theoretical formula was verified. The effects of various design parameters on the buckling performance and failure mode of CSPSW were investigated. The results show that the elastic buckling critical load and bearing capacity of the proposed CSPSW are much higher than the plain steel plate wall. The circular diameter and stiffener thickness ratio should meet the corresponding value requirements to ensure the overall buckling of CSPSW. With the increase of the span height ratio, the decrease of the depth-thickness ratio and the increase of the circular diameter, the elastic buckling critical load of CSPSW increases linearly. The rib width and rib thickness of the side stiffeners have little effect on the elastic buckling critical load of CSPSW. Yielding of the CSPSW prior to buckling under lateral load when the circular diameter is bigger than 30 mm. There are three failure modes of CSPSW, namely bending, bend-shearing, and forming “pleats” in the form of tensile bands.