Analysis of Highway Bridge Structural Vulnerability Based on PSHA

Shan Gao, Wenyuan Li, Qihong Wu

School of Architecture and Civil Engineering, Chengdu University, Chengdu, 610106, China

Abstract: Damage ｏｒ collapse of highway bridges can cause serious casualties and significant economic losses. Traffic layout is the context of various post-disaster reconstruction efforts, while bridges play an im-portant role. Based on this, the analysis of highway bridge structural vulnerability based on PSHA is proposed. The damage of ground motion intensity to seismic function of highway bridge structures, the vibration of the distance in the PSHA to the power of highway bridge structure, and the damage of the stability of the highway bridge structure by earthquake spatial distribution can come to the conclusion about the vulnerability of the highway bridge.

Keywords: PSHA; Highway bridge; Structure; Vulnerability