EXPERIMENTAL RESEARCH ON DETACHED BREAKWATERS’ EFFECT ON TSUNAMI DISASTER MITIGATION

Abstract

In Japan, detached breakwaters made with wave dissipating concrete blocks such as Tetrapods have been widely applied. However, the effect of such detached br s to reduce run-up and wave force onto seawalls has not been studied. In our study, hydraulic model tests have been systematically and carefully carried out using solitary tsunami waves with and without detached breakwaters to evaluate the effectiveness of detached bre ter s from the viewpoint of reducing run-up and wave pressure onto seawalls.