Effects of Staggered Openings on Response Reduction Factor of Frames with Shear Wall

The entire height of a building is protected by shear walls, which are made of reinforced concrete and are designed to withstand lateral stresses. The thickness of shear walls ranges from 150 to 400 mm, with the latter being the more common value as storey counts increase. Shear walls can resist horizontal mass and support gravitational mass in their orientational direction due to their superior in-plane stiffness, reducing structural damage. The positioning of shear walls is determined by the centre of stiffness and the centre of mass. There are many benefits in incorporating shear walls into a building, including increased structural rigidity, lessened sway, and mitigated earthquake damage. The main objective of the present study is to analyse the different frame models with different positions of shear walls and determine the optimum position of the shear wall using ETABS. This study investigated four different shear wall position scenarios for 56, 72, and 88 m heights with and without openings. A shear wall is placed around the core and along the periphery of the building, and the positions of a shear wall along the periphery are modified and the models are analysed for storey displacement and drift. The regular vertical and staggered shear wall openings with square and rectangular shapes have been considered as variables in the models. Based on the analysis, the efficient frame that behaves well under seismic load is identified, and it is concluded that the shear wall that has staggered openings performs well when compared with the openings in the vertical, by examining the results of maximum lateral deflections and lateral drift. Also, response reduction factors are determined for frames with vertical openings and staggered openings, and the values are compared.