A RESEARCH ON THE PRACTICAL NUMERICAL ANALYSIS METHOD FOR CHARACTERISTICS OF MOTION AND MOORING FORCES INDUCED BY TSUNAMI AND RESPONSES OF RESPONSES ON FLOATING STRUCTURES IN SHALLOW SEA

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  • MASUDA Koichi
    Dept. of Oceanic Architecture and Engineering, CST, Nihon University
  • IKOMA Tomoki
    Dept. of Oceanic Architecture and Engineering, CST, Nihon University
  • UCHIDA Maki
    Dept. of Oceanic Architecture and Engineering, Graduate School of Science and Technology, Nihon University

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Other Title
  • 浅海域に設置された浮体式構造物の津波作用下の運動及び係留索張力の実用数値解析法と応答特性に関する研究
  • センカイイキ ニ セッチ サレタ フタイシキ コウゾウブツ ノ ツナミ サヨウ カ ノ ウンドウ オヨビ ケイリュウサクチョウリョク ノ ジツヨウ スウチ カイセキホウ ト オウトウ トクセイ ニ カンスル ケンキュウ

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Abstract

The objective of present paper are to establish the practical numerical analysis system for responses of motion and mooring forces on a floating structure induced by Tsunami and to clarify the characteristics of responses on a floating body in Tsunami. In the present analysis system, the initial Tsunami profile is evaluated by applying Mansinha-Smylie's Method and propagated Tsunami profiles are calculated by the linear long wave theory and also the Tsunami exciting forces on a floating body are computed by the numerical wave tank based on VOF method and then the motions and mooring tether forces due to Tsunami are predicted by using the convolution integral method. The usefulness of the present system is confirmed by comparing with the experimental results of Tsunami exciting forces on the floating body.

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