Reduction of Impulsive Breaking Wave Pressures by Wave Dissipating Works with Low Crest Elevation

Low crested wave dissipating works with low void content were considered in this study to reduce the impulsive breaking wave pressures acting on a non-wave overtopping type seawall. The wave transmission coefficient and wave pressure distribution were measured through two dimensional wave tank experiments. The numerical computation based on Green's Identity Formula was also applied to estimate the transmission coefficient. The wave transmission coefficient decreases linearly with decreasing of the void content. The maximum wave pressures also decrease linearly with decreasing of the void content, and the variations of the maximum wave pressures depending on the relative water depth become small.