NUMERICAL ANALYSIS ON ROBUSTNESS OF STREAMLINED COASTAL DIKES IN THE TSUNAMI OVERFLOW

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Other Title
  • 津波越流に対する曲線形海岸堤防の粘り強さに関する数値解析

Abstract

 Most of coastal structures, especially coastal dikes were destroyed by the 2011 Tohoku Tsunami. It was reported that one of the most important causes was the failure of back slope of dikes due to scouring. It is assumed that probability of leading tsunami overflow landward is effective to study robustness of coastal dikes toward the tsunami. In this study, a numerical model using CADMAS-SURF/3D has been applied to clarify the difference of tsunami external force toward back slope of dikes due to structure spectification and to make suggestions for mechanism of robustness and design of coastal dikes. As a result, in order to restraint scouning at back slope of dikes, exceptng method of moderateing the back slope, streamline at top of inner slope and back slope were proposed.

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Details 詳細情報について

  • CRID
    1390282680330519680
  • NII Article ID
    130004697310
  • DOI
    10.2208/jscejoe.70.i_372
  • ISSN
    21854688
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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