Seismic Assessment of RC Buildings According to FEMA 356

摘要

This study investigates the seismic performance and vulnerability analysis of a 7-storey code-conforming with International Building Code 'IBC 2009', Reinforced Concrete (RC) building with Special Moment Resisting Frame (SMRF). One of the most important tasks in performance-based evaluation is the capacity assessment of current buildings in conformance with the present codes. Accurate assessment of the actual lateral load resistance and the potential modes of failure is an essential tool to improve the current building performance to the existing ductile design level recommended by existing codes and also, determination and design of the proper retrofit and rehabilitation system. In this study, a non-linear static (pushover) analysis was carried out for the building incorporating SAP 2000 and the ultimate capacity of the building based on the FEMA 356 guideline was established. Evaluation of the yield, plastic and ultimate rotation capacities of beams and columns was done through the application of an analytical procedure. The generated capacity curves were used to assess the performance of the building and life safety performance level (C-3) was used to describe the limiting damage condition which may be considered satisfactory for a building under Basic Safety Earthquake 1(BSE-1).