Abstract: In recent years, construction of buildings on sloping ground has increased due to rapid urbanization and shortage of flat land, especially in hilly regions. However, such buildings exhibit complex structural behavior under seismic loading due to irregular geometry, unequal column heights, and variation in stiffness. Therefore, it becomes necessary to study and improve their seismic performance using suitable structural systems. In the present study, a comparative seismic analysis of normal building and sloped building is carried out using ETABS software. Different lateral load-resisting systems such as diagonal bracing, X-bracing, V-bracing, and diagrid system are considered to evaluate their effectiveness. The buildings are analyzed under seismic Zones II and III as per IS 1893:2016. Important parameters such as storey displacement, storey drift, and storey shear are studied to understand the structural response under earthquake loading. The results of the analysis indicate that sloped buildings are more vulnerable to seismic forces compared to normal buildings due to irregularity and short column effect. It is observed that the inclusion of bracing systems significantly improves the seismic performance by reducing displacement and drift. Among all systems, X-bracing and diagrid systems show better performance due to higher stiffness and efficient load distribution. The study highlights the importance of proper structural configuration and selection of suitable bracing system for ensuring safety and stability of buildings in seismic regions.
Meshram et al. (Mon,) studied this question.