SCOURING OF HARBOR SIDE MOUND BY TSUNAMI AND COUNTERMEASURE FOR COMMON BREAKWATER

Abstract

 A lot of breakwaters suffered damage by the great east Japan earthquake tsunami. The present study is, therefore, aimed at investigating the stability of armor units on the harbor side mound of common breakwaters against tsunami overflow. Two-dimensional model test is carried out to investigate the stability of armor units. Furthermore, numerical wave flume "CADMAS-SURF" is carried out to replicate the results of hydraulic model test. As a result, installing a parapet at the front side on the coping is effective against scouring of the harbor side mound by tsunami overflow.