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Peak Dynamic Pressure on Semi- and Quarter-Circular Breakwaters Under Wave Troughs |
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| Authors: | JIANG Xue-lian ZOU Qing-ping and SONG Ji-ning |
| Institution: | State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;Tianjin Key Laboratory of Soft Soil Characteristics & Engineering Environment, School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China,Department of Civil and Environmental Engineering, The University of Maine, 5711 Boardman Hall, Orono, ME 04469-5711, USA;State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China and Tianjin Key Laboratory of Soft Soil Characteristics & Engineering Environment, School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China |
| 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. |
| Keywords: | semicircular breakwater quarter-circular breakwater wave trough load seaward wave force shoreward wave force |
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