SEISMIC PERFORMANCE OF TALL BUILDINGS WITH DIFFERENT STRUCTURAL SYSTEMS

Abstract

The rapid urbanization and population growth in India has led to an increased demand for tall buildings to maximize land use efficiency and accommodate more people in urban areas. Tall buildings are essential to address the housing and commercial space requirements in densely populated cities, providing a solution to the limited availability of land. This dissertation presents a comparative study of four structural systems for tall buildings: rigid frame system, shear wall system, braced frame system, and outrigger system. The analysis has been carried out for buildings with four structural systems having 20 stories each. These buildings have been analyzed under seismic and wind loads as per IS 1893 (Part-1): 2016, wind load IS 875 (part 3) 2015. The procedure involves initial eigenvalue analysis to obtain the fundamental time -period, followed by pushover analysis to check the performance level of each structure. Finally, time history analyses have been carried out to understand the dynamic behaviour of the buildings. The results of this study include performance metrics such as roof displacement and inter-story drift, etc. The results also provide valuable insights into the structural behaviour of tall buildings.