SEISMIC ANALYSIS OF MULTISTOREY BUILDING WITH PERFORATED SHEAR WALLS

Abstract

For many years, shear walls have been integrated as part of the resisiting lateral loads system in buildings, especially in the mid-rise to high-rise range because of their ability to control structural displacements. As the concept of design codes evolved from strength-based to performance-based, engineers became increasingly concerned about nonlinear behavior of shear walls. So, many researchers are now striving to improve and forecast how shear walls would behave during strong earthquakes. This study shows the findings of nonlinear static (pushover analysis) assessments of an 11-story structure with solid shear walls and perforated shear walls perforated in three different patterns, each varying in percentage by 10%, 15%, and 20%. Pushover analysis was conducted using ETABS 2019. The analysis reveals that shear wall systems are performing less well. With a reduction of 29 percent in the ductility reduction factor and a reduction of 36 percent in the ductility factor, the efficiency of a wall with perforated patterns has decline.