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首页> 外文期刊>Journal of marine science and technology >Structural safety assessment of a pontoon-type VLFS considering damage to the breakwater
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Structural safety assessment of a pontoon-type VLFS considering damage to the breakwater

机译：考虑防波堤损坏的浮船式VLFS的结构安全性评估

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摘要

A structural safety assessment of a pontoon-type very large floating structure (VLFS) surrounded by a gravity-type breakwater was carried out for extreme wave conditions by considering the damage to the breakwater. Bending and shear collapses are considered to be a failure mode of the floating structure, while overturning damages the breakwater. The probability of the breakwater overturning, and the transmitted wave height before and after damage to the breakwater, are evaluated using design formulae for port and harbor facilities in Japan. The ultimate bending and shear strengths of the floating structure are calculated by the idealized structural unit method (ISUM) and FEM, respectively. The calculated failure probability for the floating structure is compared with the specified target safety level. It was found that the floating structure under consideration is most likely to fail by bending in transverse waves, and that the corresponding failure probability satisfies the target level.
机译：考虑到对防波堤的破坏，在极端波浪条件下，对被重力式防波堤包围的浮船式超大型浮动结构（VLFS）进行了结构安全性评估。弯曲和剪切塌陷被认为是浮动结构的破坏模式，而倾覆破坏了防波堤。使用日本港口和港口设施的设计公式评估防波堤倾倒的可能性以及防波堤损坏前后的透射波高。浮动结构的极限弯曲强度和抗剪强度分别通过理想化结构单元方法（ISUM）和FEM计算。将计算出的浮动结构的失效概率与指定的目标安全级别进行比较。发现所考虑的浮动结构最有可能因横波弯曲而失效，并且相应的失效概率满足目标水平。

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