Abstract
In this study, static lateral loading tests in a centrifuge for L-shape breakwater subjected to tsunami were conducted in order to discuss the external stability. In case that the foundation was embedded, FE analyses were also performed. As results of tests, the bearing capacity was depended on the condition of the contact surface, the characteristics of ground. In particular it was revealed that the bearing capacity was significantly influenced by the weight of structure and the embedment of the foundation. In addition, the bearing capacity was evaluated with high accuracy by the equation of failure surface proposed in a past study. From FE analyses, it was indicated that the residual strength provided the good agreement with test results. Furthermore it was revealed that the earth pressure around the foundation was generated due to the motions of slip and rotation of the breakwater. In this study, the simple method of evaluation for the stability by assuming the earth pressure was suggested.
