大水深混成堤のマウンド被覆材の安定性に関する実験的研究

抄録

Recently breakwaters have been constructed in deep seas. For example, a trapezoidal caisson breakwater is under construction in the depth of 60m at Kamaishi Port. Although the design procedures for the upright section are established, the stability of rubble mound foundations is not sufficiently studied for the deep sea conditions.
In the present paper, the characteristics of wave-induced flow near the mound are disclosed, and the stability of armor units is investigated by two-dimensional experiments with irregular waves. According to the test results, the minimum necessary weight and covering area of armor units can be estimated for rubble mounds of composite breakwaters in the deep seas.