STUDY ON THE INFULUENC OF VULNERABILITY DUE TO STRONG MOTION FOR A STRUCTRE BODY ON TSUNAMI INUNDATION ANALYSIS

Abstract

 In this study, the subsidence amount of a body structure caused by a strong motion at the Nankai Trough great earthquake was evaluated by GEOASIA numerical simulation. We investigated the influence on the tsunami inundation process and area incorporating the numerical results of the structural vulnerability appeared by the strong motion. The numerical results show that the tsunami inundation area was extended by subsidence of body structures and collapse of an upright dike. It proves the importance of not only earthquake resistance but also vulnerability evaluation of coastal and river-side structures due to a strong motion during the process of tsunami hazard evaluation.