水中構造物に対する波力推算のための設計波

概要

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The ocean waves have characteristics as a random process. When we design for structures such as breakwaters and harbors, we widely use "the typical wave" as design waves. The typical wave is a single sinusoidal wave and its energy equals to the total energy of the random surface wave. The wave force acting on submerged structures is caused by the orbital velocity of water particles, and, therefore, the composed velocity of two waves coming from the different directions has to be added by the vectorial addition. However, the typical wave of scalar composition is generally used as design waves. The total energy of the typical wave is different from the energy due to the velocity of vectorial addition. In this paper, we theoretically discussed the relation between design wave height on surface structure (H) and that on submerged structure (Hp). we got a formula HP=aH. a is about 0.9 at typhoon.
日本水産學會の論文