抄録
In fishery and commercial harbors, various configurations of vertical-type wave dissipater have been developed and adopted as a sea wall, wharf and breakwater to tranquilize the harbor and coastal basin. In this study, the performance of a newly developed dissipater is examined experimentally to clarify the applicability to the real harbor, since the geometrical configuration of the dissipater is too complicated for the theoretical examinations. We have used two different types of the vertical dissipater, i. e. permeable and impermeable type of dissipaters. The permeable type is intended as an outside breakwater of the harbor to enhance the water exchange between inside and outside harbors. Wave forces on the newdissipaters are also examined to know the stability against waves. Especially the up-lift force on a crown plate of the dissipater is extensively examined because of its impulsive nature. It was seen that the spatial distribution of up-lift pressures on a capping plate is different from the one adopted in the previous design formula.
