Effect Of Shear Wall Percentage And Grade Of Concrete On Seismic Performance Of G+10 Reinforced Concrete Residential Building: An Analytical Study

Abstract

Shear walls are structural elements that resist gravity and lateral loads acting on buildings. Their main goal is to provide lateral stiffness to buildings. Therefore, they resist most of the seismic forces resulting from an earthquake. Due to their benefits to structural design, shear walls have been increasingly used in buildings. A total of 15 building models with 10 stories with various grade of concrete were constructed in a commercially available software package, ETABS (ETABS 21). Out of 15 models, three of them did not have any shear walls while the remaining 12 models had shear walls with varying locations and quantities for various grade of concrete. All buildings were assumed to be residential type buildings located Ahmedabad, Gujarat India. The purpose of this study was to determine the optimum ratio of shear wall area to floor area ratio. For this purpose, a total of five shear wall area ratios were considered: (a) no wall (the ratio was zero, 0%), (b) 1%, (c) 2%, (d) 3%, and (e) 4.0% having M30, M35 and M 40 grade of concrete. The base shear, maximum storey displacement and maximum storey drift were calculated according to Indian Earthquake Code (IS 1893 -2016). The response spectrum method was used for all the buildings.