INFLUENCE OF SHAKING FREQUENCY ON A BREAKEWATER DURING EARTHQUAKE AND TSUNAMI SUPERPOSITION

  • OKADA Katsuhiro
    港湾空港技術研究所 海洋研究領域 耐波研究グループ
  • SUZUKI Kojiro
    波港湾空港技術研究所 海洋研究領域 耐波研究グループ
  • ARIKAWA Taro
    中央大学 理工学部 都市環境学科

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Other Title
  • 地震と津波重畳時における防波堤への加振周波数の影響に関する研究
  • ジシン ト ツナミ チョウジョウジ ニ オケル ボウハテイ エ ノ カシンシュウハスウ ノ エイキョウ ニ カンスル ケンキュウ

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 In subduction-zone earthquakes, which cause a tsunami, it is considered that the influence of aftershocks may act on a breakwater even when wave-overtopping is taking place. However, it is unclear what effect the superposition of earthquake and tsunami will have on breakwaters. In this study, a large hydroflume capable of reproducing the superposition phenomenon of earthquake and tsunami was used. The study revealed the influence due to frequency difference and the difference depending on the presence or absence of deformation of the mound.

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