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Hydraulic Study on Liquefaction of Water Bed due to Water Surface Variation

Research Project

Project/Area Number 02452204
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Hydraulic engineering
Research InstitutionMEIJO UNIVERSITY

Principal Investigator

IWAGAKI Yuichi  Meijo University, Faculty of Science & Technology, Professor, 理工学部, 教授 (90027201)

Co-Investigator(Kenkyū-buntansha) HARADA Morihiro  Meijo University, Faculty of Science & Technology, Instructor, 理工学部, 講師 (40165030)
ARAI Muneyuki  Meijo University, Faculty of Science & Technology, Instructor, 理工学部, 講師 (90103259)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 1992: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1991: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1990: ¥2,800,000 (Direct Cost: ¥2,800,000)
KeywordsLiquefaction of water bed / Settlement of heavy mass / Pore water pressure / Net settlement of body / Compaction of sand bed / Debris flow of muddy type / Sedimentation process / 構造物の鉛直変位 / 有効応力 / 水槽の歪 / 静止摩擦角 / 水中安息角 / 流動・堆積過程
Research Abstract

1. Liquefaction on sea bed : First of all, an experimental tank for reproducing actual sea beds in a laboratory was made by using lucid acrylic plates of 1 cm thickness. However, because of a short age of rigidity, a second tank was equipped by steel plate of 1 cm thickness with a generator of water pressure variation. The first test was to measure vertical distributions of pore pressure in the sand bed and vertical displacement of a lead cylindrical mass set on the sand bottom due to water pressure variation. The main results of the tests are as follows : (1) Vertical displacement of the sand bed itself occurs due to periodic water pressure variation, but its deformation is elastic, so that the position of sand bottom comes back again after one period of variation. (2) Vertical displacement of the heavy mass set on the sand bottom is not periodical change and not complete elastic, but shows plastic behavior. (3) The residual displacement after one period is a net settlement of the heavy mass per one wave. (4) The reason of the plastic behavior of a water sandbed is not clear whether by liquefaction or not. This is a further problem to be solved.
2. Liquefaction on river bed : It makes to clear that a numerical simulation method for the deposition of the mud flow with high content of fine and cohesionless sediment. The model assumes that the excess guantity of sediment than the equilibrium deposits with the settling velocity. And in the case the debris and mud flows flow in a reservoir, it occurs a density flow or to deposit the sediment near the shallow water. It is dominated by the condition of the suspension of particles.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] 岩垣 雄一: "水圧変動に伴う水底地盤上構造物の沈下現像に関する基礎的研究" 海岸工学論文集. 39. 866-870 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 岩垣 雄一: "波動に伴う水底地盤の液状化現象と実験水槽の歪みとの関係" 名城大学理工学部研究報告. 32. 132-139 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 岩垣 雄一: "水圧変動に伴う水底地盤上構造物の沈下機構に関する研究" 平成4年度土木学会中部支部研究発表会講演概要集. 317-318 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 新井 宗之: "泥流型土石流の氾濫堆積シミュレーション" 水工学論文集. 36. 227-234 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 新井 宗之: "高濃度泥流の貯水池内流動について" 平成3年度土木学会中部支部研究発表会講演概要集. 233-234 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 新井 宗之: "小水域への高速流入数値シミュレーションについて" 平成4年度土木学会中部支部研究発表会講演概要集. 255-256 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] IWAGAKI, Y. and M. NISHIGUCHI: "Settlement phenomenon of Structures Set on Water Bed due to Water Pressure Variation" Proc. of Coastal Engineering in Japan. Vol.39. 866-870 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] IWAGAKI, Y. and M. NISHIGUCHI: "Relationship between Liquefaction Phenomena of Water Sand Bed and Deformation of Experimental Tank due to Waves" Research Report of Faculty of Science & Technology, Meijo University. No.32. 132-139 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] ARAI, M. and T. TAKAHASHI: "A Numerical Simulation Method of the Mud Flow Deposition" Proc. of Hydraulic Engineering, JSCE. Vol.36. 227-234 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 岩垣 雄一: "水圧変動に伴う水底地盤上構造物の沈下現象に関する基礎的研究" 海岸工学論文集. 39. 866-870 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 岩垣 雄一: "波動に伴う水底地盤の液状化現象と実験水槽の歪みとの関係" 名城大学理工学部研究報告. 32. 132-139 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 岩垣 雄一: "水圧変動に伴う水底地盤上構造物の沈下機構に関する研究" 平成4年度土木学会中部支部研究発表会講演概要集. 317-318 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 新井 宗之: "泥流型土石流の氾濫堆積シミュレーション" 水工学論文集. 36. 227-234 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 新井 宗之: "高濃度泥流の貯水池内流動について" 平成3年度土木学会中部支部研究発表会講演概要集. 233-234 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 新井 宗之: "小水域への高速流入数値シミュレーションについて" 平成4年度土木学会中部支部研究発表会講演概要集. 255-256 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 岩垣 雄一・西口 松男: "波動に伴う水底砂地盤の液状化現象と実験水槽の歪みとの関係" 名城大学理工学部研究報告. 32. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 岩垣 雄一・西口 松男・関 康夫・篠田 哲郎: "実験水槽の剛性が波による水底地盤の液状化現象に及ぼす影響" 平成3年度土木学会中部支部研究発表会講演概要集. 299-300 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 岩垣 雄一・原田 守博・西口 松男・関 康夫: "波による地盤の変動間隙水圧と構造物の沈下に関する二,三の実験" 平成3年度土木学会中部支部研究発表会講演概要集. 301-302 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 新井 宗之・高橋 保: "泥流型土石流の氾濫堆積シミュレ-ション" 水工学論文集. 36. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 新井 宗之・高橋 保・中井 淳: "高濃度泥流の貯水池内流動について" 平成3年度土木学会中部支部研究発表会講演概要集. 233-234 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 新井 宗之・高橋 保・黒田 崇: "土石流の貯水池流入点近傍での堆積過程について" 平成3年度土木学会中部支部研究発表会講演概要集. 235-236 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 岩垣 雄一: "海底地盤の静的・動的安定性に関する一実験" 名城大学理工学部研究報告. 第32号. (1992)

    • Related Report
      1990 Annual Research Report
  • [Publications] 岩垣 雄一: "実験水槽の剛性が水底地盤の液状化現象に及ぼす影響" 海岸工学論文集. 38. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 新井 宗之: "貯水池内での土砂の流動・堆積過程に関する実験的研究" 名城大学理工学部研究報告. 第32号. (1992)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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