Characteristics of the wall-frame interaction in steel plate shear walls with perforated infill plates

The non-linear responses of Steel Plate Shear Walls (SPSWs) with perforated infill plates are studied here with emphasis on the interaction effect between the frame and the infill plate. A number of single- and 14-story SPSWs with solid and perforated infill panels at different perforation ratios are studied numerically. The results are utilized to (a) discuss the in uence of perforated ratio and placement of the holes on system behavior, (b) study changes in system strength, stiffness, damping ratio, and ductility due to the introduction of perforation in infill panels, and (c) evaluate the change in behavior of lowand high-rise structures by the introduction of perforations. The results reveal that the perforation ratio is not the only controlling factor in strength and ductility of the shear wall specimens, and the strength and ductility of SPSW also depend upon the placement array of the perforations. The ultimate strength, ductility ratio, and initial stiffness of the perforated SPSWs have been reduced to 28, 29, and 33.5% compared to the reference specimen, respectively. Also, the values of normalized Cumulative Hysteresis Energy (CHE) and Last cycle Hysteresis Energy (LHE) and equivalent viscous damping ratio in perforated specimens are reduced to about 28, 26, and 10%, respectively.