Seismic Performance of Steel Moment Frames Designed Using Model Response Spectrum Analysis Method

Abstract

New building structures should meet target seismic performance specified in seismic codes against big seismic events. ASCE 7 (2017) states that new ordinary buildings should have a collapse probability against maximum considered earthquake ground motions less than 10%. The objective of this study is to estimate the collapse probabilities of steel special moment frames (SMFs) designed using the modal response spectrum analysis (MRSA) method provided in in ASCE 7. For this purpose, 4-, 8-, and 16-story steel SMFs are designed using MRSA method. The collapse probability of these structure is estimated according to the procedure specified in FEMA P695 (2009). It is observed that four-story SMF has a collapse probability less than 10% whereas eight- and sixteen-story SMFs have collapse probabilities exceeding 10%.