This paper presents the application of a new reliability method called Subset Simulation to seismic risk analysis of a structure, where the exceedance of some performance quantity, such as the peak\ud interstory drift, above a speciﬁed threshold level is considered for the case of uncertain seismic excitation. This involves analyzing the well-known but difﬁcult ﬁrst-passage failure problem. Failure analysis\ud is also carried out using results from Subset Simulation which yields information about the probable\ud scenarios that may occur in case of failure. The results show that for given magnitude and epicentral distance (which are related to the ‘intensity’ of shaking), the probable mode of failure is due to a\ud ‘resonance effect.’ On the other hand, when the magnitude and epicentral distance are considered to be\ud uncertain, the probable failure mode correspondsto the occurrence of ‘large-magnitude, small epicentral\ud distance’ earthquakes
To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.