Experimental Study on Deformation Mechanism of Caisson Type Breakwater Subject to Extreme Wave Load

Abstract

Regarding unexpected attack of extreme waves exceeding design waves, the mechanism of large deformation of a marine structure has not been studied in conventional studies. In this study, the fundamental mechanism of large deformation of caisson type breakwaters, which is caused by failure of bearing rubble mound, is elucidated by conducting a hydraulic experiment in a wave flume and a static-load experiment. In particular, remarkable failure modes are found for the development of evaluation method on the deformation of a caisson type breakwater subject to extreme wave load.