Tentative engineering approach to scour around breakwaters in random waves |
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| Institution: | 1. Department of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;2. Department of Mathematical Sciences, Norwegian University of Science and Technology NO-7491 Trondheim, Norway;3. Department of Civil and Transport Engineering, Norwegian University of Science and Technology NO-7491 Trondheim, Norway;1. State Key Laboratory of Ocean Engineering, Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China;2. School of Engineering and Built Environment, Griffith University Gold Coast Campus, Queensland, QLD 4222, Australia |
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| Abstract: | An approach by which the scour depth and protection layer width around the head of vertical-wall breakwaters, the scour and deposition depths as well as the protection layer widths at the round head of rubble-mound breakwaters in random waves can be derived is presented. Here the formulas for scour depth by Sumer and Fredsøe (1997) for vertical-wall breakwaters for regular waves and Fredsøe and Sumer (1997) for rubble-mound breakwaters for irregular waves are used. They are combined with describing the waves as a stationary Gaussian narrow-band random process to derive the scour and deposition depths as well as protection layer widths in random waves. Comparisons are made between the present approach and the Fredsøe and Sumer (1997) random wave scour data for rubble-mound breakwaters. |
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