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Wave-induced Liquefaction and Sediment Transport in Coastal Environment

Research Project

Project/Area Number 13450192
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionKyoto University

Principal Investigator

SEKIGUCHI Hideo  Kyoto University, Disaster Prevention Research Institute, Professor, 防災研究所, 教授 (20027296)

Co-Investigator(Kenkyū-buntansha) YAMASHITA Takao  Kyoto University, Disaster Prevention Research Institute, Associate Professor, 防災研究所, 助教授 (30111983)
MASE Hajime  Kyoto University, Disaster Prevention Research Institute, Associate Professor, 防災研究所, 助教授 (30127138)
KUMAGAI Takahiro  Penta Ocean Construction Co.Ltd., Research Engineer, 技術研究所, 係長
KOBAYASHI Shun-ichi  Kyoto University, Graduate School of Engineering, Assistant Professor, 工学研究科, 助手 (10243065)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥16,700,000 (Direct Cost: ¥16,700,000)
Fiscal Year 2003: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2002: ¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2001: ¥9,600,000 (Direct Cost: ¥9,600,000)
KeywordsLiquefaction / Seabed instability / Progressive solidification / Sediment gravity flow / Nearshore morphodynamics / Coastal sediment environment / 遠心力場波浪実験 / 波浪-地盤相互作用 / 侵食 / 沿岸域防災 / 波浪エネルギー消散 / 洗掘 / 海岸保全 / 凝固・圧密過程
Research Abstract

This research project aims at developing an integrated framework by which to describe consistently the processes of wave-induced liquefaction, fluidization and sediment transport that have profound practical implications in coastal environment. The principal results obtained may be summarized as follows :
1)Effect of wave-loading history upon liquefaction resistance of sandy sediments ; A series of centrifugal wave tests with carefully designed wave-loading histories showed that re-liquefaction resistance increased significantly due to marked densification that had occurred through "solidification" in the preceding wave-loading stage.
2)Development of a computational model for sediment gravity flow ; A three-dimensional analysis procedure for sediment gravity flow (3D-LIQSEDFLOW) has been developed in the research project. The liquefied soil is modeled as a heavy viscous fluid and a soil domain undergoing solidification is described in terms of elastoplastic consolidation theory. The free and solidification surfaces during flowage are traced using a VOF technique, facilitating analyses of a range of moving-boundary problems such as underwater sediment-dam breaking problems.
3)Mechanisms of sediment gravity flow and ensuing re-deposition ; The way in which liquefied sediment flows out and comes to a rest, was investigated in laboratory flume tests with a PIV technique introduced. The results clearly demonstrate how the initially fluid-like body of sediment with a high concentration underwent solidification in the course of flowage, eventually coming to an abrupt stop or "freezing".

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (27 results)

All 2005 2004 2003 2002 Other

All Journal Article (14 results) Publications (13 results)

  • [Journal Article] Extended energy-balance equation wave model for multidirectional random wave transformation2005

    • Author(s)
      Mase, H., Oki, K., Hedges.T.S, Li.H.J.
    • Journal Title

      Ocean Engineering In Press

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Extended energy-balance- equation wave model for multidirectional random wave transformation.2005

    • Author(s)
      Mase, H., Oki, K., Hedges, T.S.Li, H.J.
    • Journal Title

      Ocean Engineering (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Progressive solidification of a liquefied sand layer during continued wave loading2004

    • Author(s)
      Miyamoto, J., Sassa, S, Sekiguchi, H.
    • Journal Title

      Geotechnique 54(10)

      Pages: 617-629

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Complex fluid-sediment interactions in fluvial and coastal environments2004

    • Author(s)
      Sekiguchi, H.et al.
    • Journal Title

      Annuals, DPRI, Kyoto University 47C

      Pages: 55-70

    • NAID

      120002514770

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Analysis of three-dimensional sediment gravity flows2004

    • Author(s)
      Amiruddin, Sassa, S, Sekiguchi, H.
    • Journal Title

      Annuals, DPRI, Kyoto University 47B

      Pages: 617-633

    • NAID

      130004622366

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] 水中堆積物の重力流れと凝固・堆積過程の観察2004

    • Author(s)
      宮本順司, 佐々真志, 徳山領一, 関口秀雄
    • Journal Title

      海岸工学論文集(土木学会) 51

      Pages: 401-405

    • NAID

      130003807787

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Progressive solidification of a liquefied sand layer during continued wave loading.2004

    • Author(s)
      Miyamoto, J., Sassa, S., Sekiguchi, H.
    • Journal Title

      Geotechnique Vol.54, No.10

      Pages: 617-629

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Complex fluid-sediment interactions in fluvial and coastal environments.2004

    • Author(s)
      Sekiguchi, H., Nakagawa, H., Sawada, T., Ishigaki, T., Hayashi, T., Yamashita, T., Ueno, T., Muto, Y., Baba, Y., Kato, S., Serizawa, S.
    • Journal Title

      Annuals, Disas.Prev.Res. Inst., KyotoUniversity No.47C

      Pages: 55-70

    • NAID

      120002514770

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Analysis of three-dimensional sediment gravity flows.2004

    • Author(s)
      Amiruddin, Sassa, S., Sekiguchi, H.
    • Journal Title

      Annuals, Disas.Prev.Res.Inst., Kyoto University No.47B

      Pages: 617-633

    • NAID

      130004622366

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] 底質粒径の時空間変化を考慮した海浜変形予測について2003

    • Author(s)
      山下隆男, 林健太郎, 林柾〓
    • Journal Title

      海岸工学論文(土木学会) 50

      Pages: 541-545

    • NAID

      130003991430

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Preshearing effect on the wave-induced liquefaction in sand beds.2003

    • Author(s)
      Miyamoto, J., Sassa, S., Sekiguchi, H.
    • Journal Title

      Proc.Soil and Rock America, Boston, Vol.1

      Pages: 1025-1032

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] The dynamics of liquefied sediment flow undergoing progressive solidification.2003

    • Author(s)
      Sassa, S., Miyamoto, J., Sekiguchi, H.
    • Journal Title

      Proc.1^<st> Int.Conf.on Submarine Mass Movements and their Consequences, Nice

      Pages: 95-102

    • NAID

      130004621169

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Recent advances in modeling soil responses to wave loading.2002

    • Author(s)
      Sekiguchi, H.
    • Journal Title

      Proc.Int.Seminar on Practice and Advance in Geotechnical Engineering, Shanghai

      Pages: 103-116

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Instability of fluid-granular soil systems subjected to dynamic environmental loading2002

    • Author(s)
      Sekiguchi, H., Sassa, S., Li, F.
    • Journal Title

      Proc.5^<th> Taiwan-Japan Joint Seminar on Natural Hazards Mitigation, Taiwan

      Pages: 345-354

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Sassa, S., Miyamoto, J., Sekiguchi, H.: "The dynamics of liquefied sediment flow undergoing progressive solidification"Proc.1^<st> Int.Symp.on Submarine Mass Movements and their Consequences. 95-102 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Miyamoto, J., Sassa, S., Sekiguchi, H.: "Preshearing effect on the wave-induced liquefaction in sand beds"Proc.Soil and Rock America 2003. Vol.1. 1025-1032 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 佐々真志, 李風英, 関口秀雄: "潮位変動に対する飽和/不飽和地盤の応答予測"海岸工学論文集,土木学会. 50巻. 816-820 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 宮本順司, 佐々真志, 関口秀雄: "液状化地盤における進行性凝固-波浪エネルギー消散と境界層内物質輸送への適用"海岸工学論文集,土木学会. 50巻. 851-855 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 関口秀雄: "流域における土砂環境防災の研究展望"地質と調査. 3号. 23-29 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 宮本順司, 佐々真志, 徳山領一, 関口秀雄: "水中堆積物の重力流れと再堆積過程の観察"日本堆積学会2004年例会講演集. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Miyamoto, J., Sassa, S., Sekiguchi, H.: "Wave-induced liquefaction and changes in void ratio profile with depth"Proc. In. Conf. Physical Modelling in Geotechnics. 259-264 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 宮本順司, 佐々真志, 関口秀雄: "波浪作用下における液状化の進展および凝固・圧密過程"海岸工学論文集・土木学会. 49. 846-850 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Sekiguchi, H., Sassa, S., Li, F.: "Instability of fluid-granular soil systems subjected to dynamic Environmental loading"Proc. 5^<th> Taiwan-Japan Seminar on Natural Hazards Mitigation. 345-354 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Sekiguchi, H.: "Recent advances in modelling soil response to wave loading"Proc. Int. Seminar on Practice and Advances in Geotechnical Engineering. 103-116 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Miyamoto, J., Sassa, S., Sekiguchi, H.: "Wave-induced liquefaction and flow deformation in sand beds"Proc. 15^<th> Int. Conf. Soil Mech. Geotech. Eng.. Vol.3. 2239-2242 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Sassa, S., Sekiguchi, H., Miyamoto, J.: "Analysis of progressive liquefaction as a moving-boundary problem"Geotechnique. 51(10). 847-857 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Sekiguchi, H, Kim, H., Miyamoto, J.: "Dynamic physical and numerical modeling in waterfront geotechnics"Proc. Kazakhstan-Japan Joint Geotechnical Seminar. 12-19 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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