Effect of openings of shear wall in high rise buildings

Buildings with cast-in-situ reinforced concrete shear walls are widespread in many earthquake-prone countries and regions, such as India. Reinforced Concrete buildings often have vertical plate-like RC walls called Shear Walls. Shear walls are vertical walls that are designed to receive lateral forces from diaphragms and transmit them to the ground. The buildings with shear walls improve the lateral load resistance. The shear walls with openings are provided for functional requirement. Therefore, in the present work, an analytical parametric study is done for high rise buildings with the shear walls with and without openings for different shapes such as, centrally core (Box type) and at four opposite corners (L-Shape). Dynamic analysis is carried out using STAAD Pro software. The Load combinations are considered as per IS 1893 (Part 1): 2002. The results in terms of lateral displacements and design base shear in shear walls with openings and without openings are compared for the different building models considered in this investigation. It is observed that L-type shear wall shows better performance than Box type shear wall. As number of openings increases base shear decreases and displacement increases with increase in number of openings.