Abstract
Performance characteristics of a single-water-chamber type breakwater have been clarified as compared to that of conventional breakwaters, typically a composite breakwater with concrete block layers. Focusing on the wave reflection as well as the wave transmission due to wave overtopping above the breakwater crown, effectiveness of the water chamber type breakwater was examined extensively from both the experimental and theoretical points of view. In order to improve the stability of the water chamber type breakwater against wave action, a modified water chamber type breakwater filled with concrete blocks in the water chamber was proposed and its performance was examined. In order to get a rough estimation of wave loading on the water chamber type breakwater, numerical analysis based on the damping wave model was employed to predict wave forces on the breakwater.
