Three-Dimensional Numerical Analysis on Stability of Superficial Sediments of Artificial Shallows in Wave-Induced Pressure Field

• NAKAMURA Tomoaki

  Nagoya University

• SHINODA Yosuke

  JFE Engineering Corporation

• MIZUTANI Norimi

  Nagoya University

Bibliographic Information

Other Title

• 波浪による水圧変動を考慮した人工浅場表層土砂の安定性に関する三次元数値解析
• ハロウ ニ ヨル スイアツ ヘンドウ オ コウリョ シタ ジンコウ アサバ ヒョウソウ ドシャ ノ アンテイセイ ニ カンスル 3ジゲン スウチ カイセキ

Abstract

The stability of superficial sediments of an actual artificial shallow constructed in a pilot project is investigated by using a three-dimensional coupled fluid-sediment interaction model in terms of the Shields parameter (SP) and a relative vertical effective stress ratio (RESR) in the surface layer of the shallow. The wave action causes the erosion at the seaward edge of the crown, the upper part of the seaward ridge, and the center of the landward slope, and the deposition at their adjacent areas. These topographic changes are related to large values of the averaged SP, while the values of RESR around the eroded areas are larger than those at the other areas, resulting in the acceleration of the sediment transport. The topographic change of the shallow is evaluated more reasonably by using a SP modified with RESR.

Journal

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

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 66 (1), 911-915, 2010

  Japan Society of Civil Engineers

Keywords

• three-dimensional numerical analysis
• artificial shallows
• topographic change
• Shields parameter
• effective stress

Details

• CRID: 1390282680297809792
• NII Article ID: 130004956705
• NII Book ID: AA12508551
• DOI: 10.2208/kaigan.66.911
• ISSN: 18838944
• ISSN: 18842399
• NDL BIB ID: 11235478
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11235478
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed