An integrated method for sustainable performance-based optimal seismic design of RC frames with non-prismatic beams

Abstract

In the performance-based optimal seismic design, one attempts to obtain structural design variables to meet the minimum objective function satisfying the strengthbased and performance-based constraints. A limited number of studies have been conducted on the performance-based optimal seismic design of Reinforced Concrete (RC) frames. On the other hand, due to the signi_cance of environmental impacts, further study on the design of RC buildings aiming at reducing CO2 emissions is required. In this study, a computational procedure is developed for performance-based optimal seismic design of RC frames with prismatic beams and frames with non-prismatic beams. The objective functions consist of minimizing the cost and CO2 emissions. Nonlinear pushover analysis was performed to analyze the frames. The described procedure was then applied to a fourstory RC frame, and the relationship between optimal cost and optimal CO2 emissions was investigated in the case of frames with prismatic beams and those with non-prismatic beams.