Different orientations of shear wall in a reinforced concrete structure to control drift and deflection

Abstract

Abstract While Dhaka, the capital city of Bangladesh, adapts to more and more high-rise buildings and skyscrapers, concerns remain about their design efficiency and ability to withstand shear loads from seismic movements. In this study, several orientations and placements of shear walls in a regular G +15 story reinforced concrete building were assessed to observe the nature of the structure subjected to earthquake seismic loads by adopting the Equivalent Static Analysis. CSi ETABS 2019 was utilized to analyze the story shear, drift, displacement, stiffness, torsional irregularity and compared against eight separate models with different shear wall placements. The significance of this study lies in its contribution to the area of designing earthquake-resistant structures with appropriate shear wall locations following the recent Bangladesh National Building Code 2020 (Seismic criteria as per ASCE 7-05). Results reveal that shear walls placed symmetrically and along the shorter span for the selected structural plan have shown less lateral drift and displacement than structures with other shear wall orientations.