Abstract
In many ports, it has been reported that long-period waves and wind waves cause trouble in cargo handling. As a countermeasure to this, wave absorbing structures installed on the harbor side are employed. For long-period waves, we have already proposed submerged type wave absorbing structure and shown that it works effectively. However, the effectiveness of submerged type for wind waves is unclear.
In this study, a series of hydraulic model experiments was conducted to evaluate the wave absorbing performance of the submerged structure for wind waves. Furthermore, the stability of wave dissipating concrete blocks used for the submerged structure was examined. Throughout this study, it become clear that submerged structures display a higher wave absorbing performance for wind waves than conventional structure whose crown is situated above the still water level. Finally, methods to estimate the required crown width and the mass of wave dissipating concrete block are proposed.
