Abstract
A series of physical tests are conducted to examine the characteristics of the wave loading exerted on circular-front breakwaters by regular waves. It is found that the wave trough instead of wave crest plays a major role in the failure of submerged circular caissons due to seaward sliding. The difference in the behavior of seaward and shoreward horizontal wave forces is explained based on the variations of dynamic pressure with wave parameters. A wave load model is proposed based on a modified first-order solution for the dynamic pressure on submerged circular-front caissons under a wave trough. This wave loading model is very useful for engineering design. Further studies are needed to include model uncertainties in the reliability assessment of the breakwater.
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Foundation item: This research was financially supported by the Open Fund of the State Key Laboratory of Hydraulic Engineering Simulation and Safety from Tianjin University (Gtant No. HESS-1310), the Natural Science Foundation of Tianjin, China (Gtant No. 14JCYBJC22100), and the National Natural Science Foundation of China (Gtant No. 51509178). The first author is supported by the State Scholarship Fund of China Scholarship Council (Gtant No. 201308120008). The second author is supported by the Physical Oceanography Program of National Science Foundation (Grant No. 1436642), the Maine Sea Grant and NOAA for Grant No. NA10OAR4170072. The work was also undertaken as part of EFRaCC project funded by the British Council under its Global Innovation Initiative, and the open fund research at the State Key Laboratory of Hydraulics and Mountain River at Sichuan University (Grant No. SKHL1311).
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Jiang, Xl., Zou, Qp. & Song, Jn. Peak dynamic pressure on semi- and quarter-circular breakwaters under wave troughs. China Ocean Eng 31, 151–159 (2017). https://doi.org/10.1007/s13344-017-0018-1
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DOI: https://doi.org/10.1007/s13344-017-0018-1