WAVE IMPACT FORCES ON MIXED BREAKWATERS

Proceedings of the International Conference on Coastal Engineering

Francisco Martin¹  Stephan T. Grilli²  Miguel A. Losada¹ 

[1] Departamento de Ciencias y Tecnicas del Agua y del Medio Ambiente;Department of Ocean Engineering, University of Rhode Island

关键词: breakwater;    mixed breakwater;    wave impact;    wave forces;   

DOI  :  10.9753/icce.v23.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

Flat impact of a solitary wave on a mixed breakwaters is experimentally and numerically studied, using a 2D nonlinear potential flow model. Free surface profiles, internal velocities, instantaneous pressure and pressure envelope on the wall, and on the berm, are analyzed based on both measurements and calculations. Results show, a converging flow occurs above the berm, followed by a small vertical jet, with large acceleration, that is responsible for large impact pressure on the wall. Short duration peak pressures occur above SWL, and quite large pressures also occur on the berm, as far away as twice the local depth from the wall. Maximum pressure force and overturning moment on the wall reach up to 9 and 15 times corresponding hydrostatic values based on water elevation at the wall.

【 授权许可】

Unknown