MOTION OF FLOATING CAISSON USING 3D NUMERICAL WAVE TANK

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  • 3次元数値波動水槽を用いた浮遊ケーソンの動揺に関する研究

Abstract

<p> The prediction and control of wave motions during the installation of a caisson can improve the efficiency of the work. In this study, the oscillation of a caisson is investigated using a solid-gas-liquid three-phase numerical wave tank, which can analyze the movement and deformation of structures and the contact between structures due to fluid motion, and the results of numerical calculations are compared with those of hydraulic model experiments. As a result, the maximum displacement and its tendency were in good agreement with the hydraulic experiment by changing the grid size. The collision between the caisson and the mound was also investigated by changing the water draft, and it was shown that the oscillation decreased with increasing the water draft. The trend is in good agreement with that of Horisawa et al.1), indicating the importance of coupled analysis between fluid and structural analysis.</p>

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