Seismic Response of R/C Buildings with Various Shear Wall Layouts

Abstract

Reinforced concrete buildings in seismic-prone regions require effective lateral load–resisting systems to control displacement and prevent structural damage during earthquakes. Shear walls are widely used to enhance structural stiffness and reduce seismic response; however, systematic comparisons of different shear wall layout configurations under identical conditions remain limited. This study evaluates the seismic response of a reinforced concrete building with various shear wall layout configurations based on the Indonesian seismic design standard SNI 1726:2019. Numerical modeling and response spectrum analysis were performed using SAP2000 to assess key seismic performance parameters, including natural vibration period, displacement, and inter-story drift. Several structural models with different shear wall arrangements were analyzed under identical material properties, geometry, and seismic input. The results show that appropriate shear wall placement significantly improves seismic performance, with the most effective configuration achieving a reduction of inter-story drift of more than 30% compared to the structure without shear walls. The novelty of this study lies in the comprehensive and consistent comparison of multiple shear wall layout configurations within a single building model under identical seismic conditions, enabling clearer identification of an optimal configuration that balances seismic performance and architectural functionality.