抄録
In recent years, a number of composite breakwaters with concrete armor blocks piled up just in front have been constructed. These are considered effective to suppress wave pressure on the caisson and wave reflection.
The new type is a composite breakwater, that is caisson on rubble mound type, with detached submerged mounds of armor units which are otherwise to be placed just in front of the caisson. The hydraulic characteristics are investigated with two- and three- dimensional hydraulic model experiments.
As a result, this new type breakwater gives more stable environment that will be favorable to marine fishery resources with a minimum increase in construction costs.
