HYDRAULIC EXPERIMENTS ON WAVE OVERTOPPING THROUGH DOUBLE PARAPET SEAWALL

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  • CHIWATA Maki
    大成建設(株) 技術センター 社会基盤技術研究部 水理研究室
  • ODA Yukinobu
    大成建設(株) 技術センター 社会基盤技術研究部 水理研究室

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  • 護岸における二重パラペットの越波流量特性に関する実験的研究

Abstract

<p> In the future, there is concern that the risk of storm surge inundation due to wave overtopping and overflow will increase by the influence of global warming. As an adaptation measure against storm surge inundation, a double parapet seawall where a new parapet was installed on the land side of the existing seawall has been examined. Although there have been application examples of the double parapet seawall in the past, most of them are permeable between parapets, and there are few studies where the relationship between the overtopping flow rate and the related parameters evaluated quantitatively. In this study, hydraulic and numerical experiments were conducted to investigate the relationship between the overtopping flow rate and the specifications of waves and seawall. As a result of the experiments, it was shown that the double parapet seawall is effective as a countermeasure against wave overtopping, and that the overtopping flow rate can be calculated by the parameters of the seawall and waves.</p>

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