Expected Annual Earthquake Loss Analysis Based on CMR of Structures

Incorporating the probability of seismic hazard, expected annual earthquake loss with different collapse margin ratio (CMR) has been studied in this paper. Nonlinear simulation models of reinforced concrete (RC) frames were analyzed using incremental dynamic analysis (IDA) under continuous earthquake intensity. The analytic results from four examples of RC frames show that the expected annual loss has negative correlation with the CMR of the concerned structures, and seismic loss basically decreases with increasing CMR at given ground motion intensity. The proposed idea herein could be regarded as a promising improvement on the quantification of earthquake loss estimation by utilizing CMR of structures.