Study on Countermeasures against Overturning of Caisson due to Tsunami Overflow

• NAKAMURA Tomoaki

  Nagoya University

• ANDO Kohei

  West Japan Railway Company

• MIZUTANI Norimi

  Nagoya University

• KOTAKE Yasuo

  Toyo Construction Co., Ltd.

Bibliographic Information

Other Title

• 津波の越流による混成堤ケーソンの転倒防止策に関する研究
• ツナミ ノ エツリュウ ニ ヨル コンセイテイ ケーソン ノ テントウ ボウシサク ニ カンスル ケンキュウ

Abstract

To prevent the overturning of a caisson on a mound due to tsunami overflow, the effectiveness of the change in the configuration of its landward upper part and the installation of a mooring cable at its seaward side is investigated using a coupled fluid-structure interaction model. Numerical results show that the change to slopes milder than 1/2 whose landward edge is under the still water surface can prevent the overturning of the caisson, suggesting the enhancement of its tenacity. This effect can be assessed using the scale of vortices formed at the landward side of the caisson. Furthermore, the mooring cable would be an effective countermeasure to enhance the tenacity of the caisson. However, the strength of the mooring cable and its attachment to the caisson and the mound needs to be assessed because of the action of large impulsive force.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 69 (2), I_906-I_910, 2013

  Japan Society of Civil Engineers

Keywords

• Caisson
• Tsunami
• Countermeasure
• Numerical Analysis

Details

• CRID: 1390001205319203968
• NII Article ID: 40019876284
• NII Article ID: 130004551218
• NII Book ID: AA12508551
• DOI: 10.2208/kaigan.69.i_906
• ISSN: 18838944
• ISSN: 18842399
• NDL BIB ID: 025019523
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025019523
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed