Analysis of RC buildings under seismic zones in Bangladesh concerning shear wall, aspect ratio and breadth to length ratio

Abstract

Abstract Lateral forces (wind, seismic) generated in RC buildings are major design criteria against structural collapse. Shear walls offer effective ways to provide resistance against such lateral loads. The present study investigates the drift and defection control of RC symmetrical buildings by providing core and corner shear walls. Different limiting criteria were determined in four seismic zones (Zone-1 to Zone-4) in Bangladesh, based on aspect ratio and proposed breadth to length ratio (B/L ratio). Equivalent Static Analysis in ETABS V.2016 was used to analyze three distinct breadth-to-length ratios – 1, 0.7, and 0.4 for each zone without shear wall and with both core and corner shear walls. Results reveal that corner shear walls act efficiently compared to core walls to resist lateral loads, drift, and deflection. A descending failure pattern was observed from lower to higher seismic zones for the corresponding breadth to length ratios (B/L).