Experiments on Wave Pressures on a Vertical Breakwater over a Steep Slope

• Main Authors: Yu-ju Lin, 林侑儒
• Other Authors: 蔡清標
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/53220764256201960773

碩士 === 國立中興大學 === 土木工程學系所 === 96 === There are many researches about the wave pressure of the vertical breakwater, but it was conditional on gentle slopes. The engineers in Taiwan often estimate the wave pressure on the breakwater by Goda’s empirical formula. But there are many steep slope in the East coast of Taiwan. For the safety of vertical breakwater, it is necessarily to investigate the applicability of steep slope by Goda’s empirical formula. In this study, hydraulic model tests were conducted to investigate the wave pressures on a vertical breakwater over a steep slope by regular waves. The wave profiles as well as the wave pressure at the breakwater are measured and discussed. The experimental results are compared with the Goda’s empirical formula. The results show Goad’s formula estimate for the larger relative water depth and the smaller relative wave height at the steep slope. The large wave pressures are measured on the breakwater, due to the wave is likely to impact on the breakwater at the steep bottom, for which the Goda’s formula underestimates the wave pressure for most wave conditions. Based on the experimental results, a new empirical formula is presented in this study to estimate the wave pressure on the vertical breakwater at the steep bottom.