Numerical and Experimental Investigation of Steel Frames Equipped with Shear Walls with and without Openings

Memar Eftekhari, Mohammad; Akbarpour Nikghalb Rashti, Abbas; TahamouliRoudsari, Mehrzad

doi:10.22059/ceij.2025.386113.2190

Numerical and Experimental Investigation of Steel Frames Equipped with Shear Walls with and without Openings

Articles in Press

Authors

¹ Department of Civil Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran.

² Department of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.

10.22059/ceij.2025.386113.2190

Abstract

Steel plate shear walls (SPSWs) are one of the modern seismic engineering systems used as a lateral load-bearing system. In this study, two SPSWs specimens with and without an opening, incorporating stiffeners in their upper beams, were subjected to cyclic loading in an experimental setting. The walls had a scale of one-third and were tested under cyclic displacement control loading. Subsequently, calibrated numerical models were utilized to conduct further studies. The opening in the specimens was considered as the independent variable, and the ductility, maximum base shear, and stiffness of the models were considered as dependent variables. For this purpose, the hysteretic curve of each specimen was extracted, which was then used to derive the equivalent bilinear and backbone curves. Finally, based on these curves, the models’ seismic parameters, including the base shear, ductility, and stiffness were calculated. Furthermore, this study demonstrates that with an increase in the percentage of the opening, the parameters of base shear, ductility, and stiffness experience a change, with the smallest change observed in the ductility of the models. Finally, a set of equations was proposed for structural designers and engineers to calculate the seismic parameters based on the percentage of openings.

Keywords