PERFORMANCE-BASED DESIGN OF HIGH-RISE BUILDINGS

Abstract

This thesis focuses on the performance-based design of high-rise structures, specifically examining the conventional design methodology outlined in ASCE 7-16 and the new procedure introduced by the Tall Building Initiative (TBI). The TBI offers guidelines for the performancebased seismic design of tall buildings, presenting a novel approach that differs significantly from conventional design methods. The objective of this study is to investigate and compare the effectiveness of the TBI procedure in comparison to the conventional approach. To achieve this, a comprehensive analysis and design have been performed on a 30-story steel building on two different high-rise buildings with different structural systems: specially concentrically braced frame (SCBF) and bucklingrestrained braced frame (BRBF). Both buildings were designed using both the conventional and TBI procedures. The study focuses on evaluating and comparing the performance of the two procedures for each structural system. Various performance criteria such as structural integrity, seismic response, and overall behaviour have been examined. The findings aim to provide insights into the advantages and limitations of the TBI procedure compared to the conventional design approach, particularly in the context of high-rise structures. The results of this research will contribute to enhancing the understanding of performancebased design for high-rise buildings and will aid in determining the suitability and applicability of the TBI procedure in real-world scenarios. Ultimately, the study aims to provide valuable insights for engineers and practitioners involved in the design and construction of tall buildings, facilitating informed decision-making, and promoting safer and more resilient structures in seismic regions.