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2008 Fiscal Year Final Research Report

Effect of saturation of backfill on seismic stability of reinforced soil walls

Research Project

  • PDF
Project/Area Number 19760324
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Geotechnical engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

IZAWA Jun  Tokyo Institute of Technology, 大学院・理工学研究科, 助教 (70345388)

Project Period (FY) 2007 – 2008
Keywords補強土 / 耐震 / 飽和度
Research Abstract

2004年に起きた新潟県中越地震では,直前に多量の雨が降ったため多くの土構造物被害が確認された.これまで耐震性に優れていると報告されている補強土壁も例外ではなく,裏込め内の水の影響で被害が生じた例が数件報告されている.そこで本研究では補強土壁内の水位が補強土壁の地震時安定性に及ぼす影響を把握するため,遠心振動台実験を行った.実験では不飽和状態と飽和状態の模型補強土壁を用いたが,飽和状態のケースでは水位管理の簡略化のため模型補強土壁を水没させた状態を想定した.実験の結果,土壁内の水位により,地震時に致命的な打撃を受ける可能性があることが分かった.

  • Research Products

    (7 results)

All 2008 2007

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (4 results)

  • [Journal Article] Effects of Transverse Ribs on Pullout Resistance and Deformation During The Unloading-Reloading Process2008

    • Author(s)
      Giang H. Nguyen, Jiro Kuwano, Jun Izawa, Sakae Seki
    • Journal Title

      Geosynthetics Engineering Journal Vol.23

      Pages: 37-44

    • Peer Reviewed
  • [Journal Article] 壁面変位を用いた補強土擁壁の地震時損傷度評価2007

    • Author(s)
      井澤 淳, 桑野 二郎
    • Journal Title

      ジオシンセティックス論文集

      Pages: 207-212

    • Peer Reviewed
  • [Journal Article] ジオグリッドと改良土を組み合わせた補強土壁の地震時挙動に関する研究2007

    • Author(s)
      井澤 淳, 斉藤 智哉, 伊藤 秀行, 上野 誠, 桑野 二郎
    • Journal Title

      地盤工学ジャーナル

      Pages: 73-86

    • Peer Reviewed
  • [Presentation] Evaluation of damage of geogrid reinforced soil wall based on wall displacement2008

    • Author(s)
      Jun IZAWA, Jiro KUWANO
    • Organizer
      4th European Geosynthetics Conference
    • Place of Presentation
      Edinburgh, Scotland
    • Year and Date
      2008-09-10
  • [Presentation] Centrifuge shaking table tests on saturated reinforced soil wall2008

    • Author(s)
      Jun IZAWA, Jiro KUWANO
    • Organizer
      4th Asian Regional Conference on Geosynthetics
    • Place of Presentation
      Shanghai, China
    • Year and Date
      2008-06-19
  • [Presentation] Development of rational design method for the geogrid reinforced soil wall combined with soil cement and its application2007

    • Author(s)
      H. Ito, T. Saito, M. Ueno, J. Izawa, J. Kuwano
    • Organizer
      5th International Symposium on Earth Reinforcement
    • Place of Presentation
      Fukuoka
    • Year and Date
      2007-11-15
  • [Presentation] The effect of inclination of reinforcement on the horizontal bearing capacity of the ground reinforcing type foundation, New Horizons in Earth Reinforcement2007

    • Author(s)
      J. Izawa, H. Kusaka, M. Ueno, N. Nakanani, H. Sato, J. Kuwano
    • Organizer
      5th International Symposium on Earth Reinforcement
    • Place of Presentation
      Fukuoka
    • Year and Date
      2007-11-15

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Published: 2010-06-10   Modified: 2016-04-21  

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