Application of the Fema-P58 Methodology for Regional Earthquake Loss Prediction

Abstract eng:
Earthquake-induced building collapses have been effectively mitigated in recent years. However, earthquake-induced economic losses have continued to rise. Following the objective and procedure of next-generation performance-based seismic design, the economic loss prediction method proposed by FEMA P-58 (referred to as “the FEMA P-58 method” hereafter) is introduced for regional earthquake loss prediction in this study. The engineering demand parameters (EDPs) for a large number of buildings within a region are efficiently obtained through nonlinear time history analysis (THA) using multi-story concentrated-mass shear (MCS) models. The building data, including structural and nonstructural components, is obtained through field investigation, structural and architectural drawings, and default database published from the FEMA P-58 document. The proposed FEMA P-58 method is implemented for a region located in China to demonstrate the implementation and advantage of using the FEMA P-58 method for regional earthquake loss prediction. The results show that the probability of complete loss due to collapse is relatively low. But the loss associated with significant repair and irreparable damage is very high. In addition to the advancement in loss simulation for a region, the proposed methodology can also be used to identify the loss distribution within a building. The result can also be used to study the influence of the different ground motion characteristic on the regional loss.

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