Abstract
The Hyogoken-Nambu Earthquake gave serious damage to foundations located on the Hanshin Expressway No. 5 Bay Route that connects many recently reclaimed islands, together with causing greater residual ground deformation and residual lateral displacement of piers near waterfront. In this paper, were described the details of damage condition of piles and its relationship with the seismic response displacement of the ground that was calculated using one dimensional earthquake response analysis. As the results, it was concluded that cracks were concentrated at pile top and around pile surface at the boundary of soil layers, and that cracks were caused mainly due to the seismic response displacement of ground, especially at around revetments, the lateral flow displacement of ground was an aditional cause.
