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Design wave height selection in intermediate-depth waters

机译:中深水域设计波高选择

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摘要

Two methods are compared for selection of design wave height for maritime structures in intermediate-depth water. One is the Composite Weibull distribution (CWD) method by Battjes and Groenendijk (2000) and another is the breaker index method by Goda (1974). The former is found inappropriate for practical use because of its inherent tendency of underestimating maximum wave height in intermediate-depth waters. Underestimation is caused by its artificial setting of the Weibull shape parameter at k_2=3.6. A sample calculation for the offshore significant waves with H_(1/3) = 8.3m and T_(1/3) = T_(M-1.0) = 12.5 m is presented to compare H_(0.1%) by the CWD method and H_(1/250) by the breaker index method to demonstrate their differences. The present paper discourages use of the CWD method in design works in intermediate-depth waters, and recommends the breaker index method instead.
机译:比较了两种选择中深水域海事结构设计波高的方法。一种是Battjes和Groenendijk(2000)的Composite Weibull分布(CWD)方法,另一种是Goda(1974)的Breaker Index方法。发现前者不适合实际使用,因为其固有的趋势是低估了中深度水域中的最大波高。低估是由于它的人为设置k_2 = 3.6的Weibull形状参数引起的。提出了H_(1/3)= 8.3m和T_(1/3)= T_(M-1.0)= 12.5 m的海上重要波浪的样本计算,以通过CWD方法和H_比较H_(0.1%) (1/250)通过断路器指数法证明其差异。本文不建议在中深度水域的设计工作中使用CWD方法,而建议使用破碎指数法。

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