NUMERICAL STUDY ON VARIABILITY OF TSUNAMI INUNDATION PROCESS INDUCED BY A GROUND LIQ-UEFACTION IN TOKUSHIMA CITY
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- YAMANAKA Ryoichi
- 徳島大学 環境防災研究センター
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- NAKAGAWA Kosuke
- 株式会社基礎建設コンサルタント 技術部
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- KOZUKI Yasunori
- 徳島大学 環境防災研究センター
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- BABA Toshitaka
- 徳島大学 大学院社会産業理工学研究部
Bibliographic Information
- Other Title
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- 液状化に伴う沈下を考慮した徳島県東部での津波浸水過程の数値的検討
- エキジョウカ ニ トモナウ チンカ オ コウリョ シタ トクシマケン トウブ デ ノ ツナミ シンスイ カテイ ノ スウチテキ ケントウ
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Description
A tsunami simulation with a ground liquefaction was conducted for the evaluation of an effect on the variability of the tsunami inundation process caused by the ground deformation. We developed a new correction method to calculate a change of ground elevation by a ground liquefaction using the result of the simplified method and the result of FEM by FLIP. The tsunami simulation was conducted by JAGRUS. As a result, the inundation process and the arrival time of Tsunami were changed by a ground liquefaction around small rivers and banking structures because the tsunami runs up through small rivers and is trapped by roads and rail tracks. There were areas where the arrival time of the tsunami reached at most 10 minutes earlier. The numerical results suggested that ground conditions could change the tsunami prediction result drastically and we should start to escape disaster as soon as possible.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 73 (2), I_289-I_294, 2017
Japan Society of Civil Engineers
