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Designing and construction methods of reinforced river dike in a natural environmentally friendly way

Research Project

Project/Area Number 13555137
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Geotechnical engineering
Research InstitutionGifu University

Principal Investigator

YASHIMA Atsushi  Gifu University, Dept. of Civil Engr., Professor, 工学部, 教授 (90144394)

Co-Investigator(Kenkyū-buntansha) SUMI Taketomi  Nihon-Chishitsu Consultant, 主幹(研究職)
SAWADA Kazuhide  Gifu University, Dept. of Civil Engr., Research Associate, 工学部, 助手 (30273121)
ZHANG Feng  Gifu University, River Basin Research Center, Associate Professor, 流域圏科学センター, 助教授 (70303691)
ITO Shuji  Maeda Kosen, 工法開発部, 主任(研究職)
伊藤 修一  前田工繊(株), 工法開発部, 主任
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥11,200,000 (Direct Cost: ¥11,200,000)
Fiscal Year 2002: ¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 2001: ¥6,900,000 (Direct Cost: ¥6,900,000)
KeywordsGeogrid / Soil Reinforcement / River dike / Symbiosis with nature / Design Method / Construction Method / Trial River dike / Full-scale Test / 自然環境 / 植生回復 / 多自然型 / 通水実験 / 現場計測 / 破壊実験 / 模型実験
Research Abstract

In order to establish a design and construction method as a new application of the reinforced soil, river dike embankment method with geo-grid reinforcement is proposed. There are some uncertainties in the design concept of the reinforced soils used for the river dike. Such factors as the limitation of the length of geo-grid reinforcement in rive dike, the quality of filling material, the design river-water flow speed, the resistance of the front unit against floating logs and boulders, and the plantation on the dike surface for preventing soil draw-out, should be investigated. In this study, a real scale field construction and field monitoring were conducted to establish a design and construction method of the reinforced soil.
At the first trial of real scale in situ test, some of the filling materials were drawn out from the dike. On the other hand, overall deformation process by scouring and surface deformation process by floating logs were observed at the real scale test on the field. Based on these test results and observed facts such as soil draw out and erosion of top surface at the very heavy rain, an improved river dike was reconstructed. In this test river dike, materials for soil draw out were improved and some improvements design were tested and various kind of measuring includes pore water pressure in the dike were conducted for two years. From this test results, the reinforced river dike was confirmed its performance and behave as a unit of one construction when it was constructed with reasonable method. Based on this research, a new design method for external stability and for evaluation method with flow of dike stability were proposed. It is proposed not only for dike on the land but also for river dike with new improve methods that includes effects of water level fluctuation in river and in the dike.

Report

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

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Sawada, K.: "Trial construction of the reinforced river dike and performance"Proc.Int.Sympo.on Earth Reinforcement. 1. 271-276 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 沢田 和秀: "実大 補強土河川護岸の中詰材吸出し現象と洪水時の挙動"第36回地盤工学研究発表会講演集. 2. 2087-2088 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 前田 英史: "ジオグリッドを用いた「補強土護岸工法」の開発"ジオシンセティックス技術資料. 18. 33-38 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 森口 周二: "補強土河川護岸構造物の破壊実験と試験堤防再構築"ジオシンセティックス論文集. 17. 195-200 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 八嶋 厚: "大規模実験による補強土河川堤防の挙動把握"土木学会第57回年次学術講演会講演集. III. 841-842 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Sawada: "Trial construction of the reinforced river dike and its performance"Proc. Of the international Symposium on earth reinforcement, Fukuoka, Ochiai et al. ed.. Vol.1. 271-276 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K. Sawada: "Soil draw from the reinforced river dike and its behavior during floods"PROCEEDINGS OF THE THIRTY-SIXTH JAPAN NATIONAL CONFERENCE ON GEOTECHNICAL ENGINEERING. Vol.2. 2087-2088 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H. Maeda: "The development of the river revetment method of construction by the reinforcement soil"Geosynthelics Technical Information. Vol.18, No.2. 33-38 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S. Moriguchi: "Full-scale destruction experiments and reconstruction of reinforced river dike"Geosynthetics. Vol.17. 195-200 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A. Yashima: "Behavior of reinforced river dike by real scale field test"58^<th> JSCE Annual Conference. Vol.3. 841-842 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 森口周二他: "補強土河川護岸構造物の破壊実験と試験堤防再構築"ジオシンセティックス論文集. 第17巻. 195-200 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 八嶋厚他: "補強土河川護岸堤防の局所洗堀による変形挙動の一考察"第38回地盤工学研究発表会平成15年度発表講演集. (発表予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kazuhide SAWADA: "Trial construction of the reinforced river dike and its performance"Proc. Of the International Symposium on Earth Reinforcement. 1. 271-276 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 沢田 和秀: "河川護岸の中詰材吸出し現象と洪水時の挙動"第36回地盤工学研究発表会講演集. 2. 2087-2088 (2001)

    • Related Report
      2001 Annual Research Report

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

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