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Study of Partial Coefficients for Design of semicircular breakwaters

China Ocean Engineering 2010年第1期24卷 29-40页

作者：郄禄文 Byung Ho CHOI College of Civil Engineering Hebei University Department of Civil and Environmental Engineering Sungkyunkwan University300 Chunchun-dongJangan-GuSuwon

In the present study, the reliability design of semicircular breakwater is based on the verification of the rules defined by standard specifications, where partial coefficients are introduced to ensure safety. The reliability of the semicircular breakwaters has been analyzed by using the Hasofer-Lind method to determine the reliability index of structure that has correlated loads, utilizing the long-term observed wave data at a given place. The relation curve between reliability index and safety factor in the traditional design method, as well as the relationships between reliability index and partial coefficients, have been obtained. This paper proposes values of partial coefficients for the design expression of semicircular breakwaters in the cases of anti-sliding and anti-overturning.

关键词： partial coefftcient reliability index correlated variables semicircular breakwater

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Peak Dynamic Pressure on Semi-and Quarter-Circular breakwaters Under Wave Troughs

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China Ocean Engineering 2017年第2期31卷 151-159页

作者： JIANG Xue-lian ZOU Qing-ping SONG Ji-ning State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University Tianjin Key Laboratory of Soft Soil Characteristics & Engineering Environment School of Civil EngineeringTianjin Chengjian University Department of Civil and Environmental Engineering The University of Maine State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University

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.

关键词： semicircular breakwater quarter-circular breakwater wave trough load seaward wave force shoreward wave force

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