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Study on the occurrence mechanism of cracks in the dam axis of fill dams caused by a huge earthquake

Research Project

Project/Area Number 26450349
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Rural environmental engineering/Planning
Research InstitutionNational Agriculture and Food Research Organization

Principal Investigator

Tagashira Hidekazu  国立研究開発法人農業・食品産業技術総合研究機構, 農村工学研究部門 施設工学研究領域, ユニット長 (40414221)

Co-Investigator(Kenkyū-buntansha) 増川 晋  国立研究開発法人農業・食品産業技術総合研究機構, 農村工学研究部門 施設工学研究領域, 研究領域長 (00414459)
向後 雄二  東京農工大学, (連合)農学研究科(研究院), 教授 (30414452)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsフィルダム / 地震被害 / 亀裂発生機構 / 遠心載荷振動模型実験 / 画像解析 / FEM解析 / 地震 / 堤軸方向亀裂 / 地震時挙動
Outline of Final Research Achievements

Although a crack along the dam axis in the dam crest or the neighboring area is one of the most popular damage patterns of fill dams caused by an earthquake, the occurrence mechanism is not fully clear. In this study, the mechanism was examined with dynamic centrifuge model tests, subordinate image analyses for the cross section of the model and FEM analyses. On the slope, the local concentration of horizontal strain (or difference of horizontal displacement) and shear strain occurred and a crack appeared at the upper part. The next point of the concentration and a crack appeared at the upper side of it. At the crest, the concentration occurred in the middle part and grew into cracks.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (2 results)

All 2017 2016

All Presentation (2 results)

  • [Presentation] 画像解析を用いた遠心載荷振動模型実験によるフィルダム堤頂部の亀裂発達過程2017

    • Author(s)
      田頭秀和,黒田清一郎,林田洋一
    • Organizer
      土木学会平成29年度全国大会第72回年次学術講演会
    • Place of Presentation
      九州大学伊都キャンパス(福岡県・福岡市)
    • Year and Date
      2017-09-11
    • Related Report
      2016 Annual Research Report
  • [Presentation] 低相対密度の下層を有する層状模型地盤作製方法2016

    • Author(s)
      田頭秀和
    • Organizer
      土木学会第71回年次学術講演会
    • Place of Presentation
      東北大学川内北キャンパス(宮城県仙台市)
    • Year and Date
      2016-09-07
    • Related Report
      2015 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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