SHEAR WALL LAYOUT VARIATIONS EFFECT ANALYSIS ON STRUCTURAL DUCTILITY USING PERFORMANCE BASED DESIGN METHOD

(Studi Kasus Gedung Perkantoran 24 Lantai Di Kota Surabaya)

Abstract

Surabaya, a city traversed by active faults, is highly prone to earthquakes, making the design of earthquake-resistant structures critical. Traditional design assumes elastic structural behavior under lateral earthquake forces, while actual building response often involves inelastic behavior. This study investigates the effect of shear wall placement on the ductility of building structures, a key factor in their ability to deform beyond the elastic limit. Shear walls, a widely used earthquake-resistant structural system, are optimized in this research through the application of performance-based design principles. Nonlinear pushover analysis using ETABS software was employed to simulate structural behavior under lateral loads. Four shear wall placement variations were analyzed, including one existing model and three with different configurations of wall placement relative to the building core. Results indicate that the model with shear wall variation 1 achieves the highest ductility, with values of 3.934 on the X-axis and 3.327 on the Y-axis. The findings conclude that placing shear walls along the building’s edges and parallel to its axes maximizes ductility compared to other configurations.