Controlling of Drift and Deflection of RC Buildings in Bangladesh with respect to Aspect Ratio and Breadth to Length Ratio

Abstract

Lateral forces (wind, seismic) generated in RCC building may cause the structure to collapse. Shear wall is one of the effective ways to provide resistance against lateral loads. The present study focuses on drift and defection control of RC symmetrical building by providing core and corner shear walls. Different failure 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 revealed that corner shear walls acted efficiently compared to core walls to resist lateral loads, drift, and deflection. A descending failure pattern and an incremental tendency of spectral acceleration were observed from lower to higher seismic zones for corresponding breadth to length ratios (B/L).