地震時における道路施設の構造損傷・機能障害の評価(一般セッション,口頭発表)

概要

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This paper presents a methodology for developing the seismic fragility function that takes both physical and functional aspects into account, and evaluates the seismic performance of a highway system as an example. The basic data that describe physical and functional characteristics of the highway system under the 1995 Hyogoken-Nanbu earthquake was provided by Hanshin Expressway Public Corporation. This paper (1) constructs the GIS-based damage and repair database; (2) estimates spatial distribution of ground motions that is overlaid to the highway network to assign such ground motion to each facility; (3) develops the seismic fragility curves for the highway bridges. The fragility curves developed here evaluate both physical and functional aspects of the seismic performance for highway systems and are used to demonstrate for estimating seismic losses due to earthquakes.