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Establishment of evaluating method for remedial works against long-term instability of tunnels due to deterioration of surrounding ground

Research Project

Project/Area Number 18560484
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionNagoya Institute of Technology

Principal Investigator

ZHANG Feng  Nagoya Institute of Technology, Graduate School of Engineering, Professor (70303691)

Co-Investigator(Kenkyū-buntansha) NAKAI Teruo  Nagoya Institute of Technology, Graduate School of Engineering, Professor (00110263)
MAEDA Kenichi  Nagoya Institute of Technology, Graduate School of Engineering, professor (50271648)
HINOKIO Masaya  Nagoya Institute of Technology, Graduate School of Engineering, Assistant Professor (00335093)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,890,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2006: ¥2,200,000 (Direct Cost: ¥2,200,000)
Keywordsconstitutive equation / soft rock / long-term instability / tunnel / lining / deterioration / remedial work / 土質力学
Research Abstract

In this research, based on elasto-viscoplastic model with strain hardening and strain softening, finite element analyses were conducted to investigate the long-tem instability of tunnel in shuttered zone. The purpose of the research is to investigate the mechanism of the long-tem instability of the tunnel due to the time dependent behavior of surrounding ground. Particular attention has been paid to the redistribution of the stress within the ground due to the strain softening and the time dependent behaviors of soils. From the analysis, a new approach for assessing the long-term instability of tunnel and the effectiveness of the remedial work carried out for the tunnel was proposed. It is found that due to the time dependent behavior of the ground, the earth pressure acting on the tunnel lining changes constantly. It is also found that the existence of a cave may greatly change the distribution of the moment and may lead to the cracking of concrete. The remedial work, that is, the injection of mortar into existed cave, rock bolts and steel arching are found to be very effective in reducing the section force of lining. The calculated results are compared and checked with the results obtained from field measurements accumulated in a long period. It is found from the numerical analysis conducted in this research is capable of simulating the mechanism of long-term instability of tunnel and evaluating the effectiveness of the remedial works to a reasonable accuracy, by which it is possible to apply the method to field projects

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (13 results)

All 2008 2007

All Journal Article (12 results) Presentation (1 results)

  • [Journal Article] 軟岩地山におけるトンネルの長期変形挙動に関するモデル実験の解析と評価2008

    • Author(s)
      関根裕治・八代義信・田坂嘉章・黒瀬浩公・大森剛志・張鋒
    • Journal Title

      第37回岩盤力学に関するシンポジウム講演集 37巻(CR-ROM)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 軟岩地山におけるトンネルの長期変形挙動に関するモデル実験の解析と評価2008

    • Author(s)
      関根 裕治、八代 義信、田坂 嘉章、黒瀬 浩公、大森 剛志、張 鋒
    • Journal Title

      第37回岩盤力学に関するシンポジウム講演集 37巻(CR-ROM)

    • Related Report
      2007 Annual Research Report
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その1:軟岩のクリープを考慮したトンネル模型実験-2007

    • Author(s)
      黒瀬浩公, 田坂嘉章, 関根裕治, 八代義信, 亀谷裕志, 張鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(CR-ROM)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その2:ひずみ軟化型弾粘塑性構成モデルの拡張と三軸試験への適用-2007

    • Author(s)
      田坂嘉章, 東均, 大森剛志, 関根裕治, 張鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(CR-ROM)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その3:ひずみ軟化型弾粘塑性構成モデルによるトンネル模型実験の解析-2007

    • Author(s)
      大森剛志, 黒瀬浩公, 田坂嘉章, 関根裕治, 張鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(CR-ROM)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Explanation of Cyclic mobility of soils : approach by stress-induced anisotropy2007

    • Author(s)
      F. Zhang, B. YE, T. Node, M. Nakano, K. Nakai
    • Journal Title

      Soils and Foundations Vol.47, No.4

      Pages: 635-648

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その1:軟岩のクリープを考慮したトンネル模型実験-2007

    • Author(s)
      黒瀬 浩公, 田坂 嘉章, 関根 裕治, 八代 義信, 亀谷 裕志, 張 鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(CR-ROM), No.774

    • Related Report
      2007 Annual Research Report
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その2:ひずみ軟化型弾粘塑性構成モデルの拡張と三軸試験への適用-2007

    • Author(s)
      田坂 嘉章, 東均, 大森 剛志, 関根 裕治, 張 鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(CR-ROM), No.775

    • Related Report
      2007 Annual Research Report
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その3:ひずみ軟化型弾粘塑性構成モデルによるトンネル模型実験の解析-2007

    • Author(s)
      大森 剛志, 黒瀬 浩公, 田坂 嘉章, 関根 裕治, 張 鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(CR-ROM), No.776

    • Related Report
      2007 Annual Research Report
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その1 : 軟岩のクリープを考慮したトンネル模型実験-2007

    • Author(s)
      黒瀬浩公, 田坂嘉章, 関根裕治, 八代義信, 亀谷裕志, 張鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その2 : ひずみ軟化型弾粘塑性構成モデルの拡張と三軸試験への適用-2007

    • Author(s)
      田坂嘉章, 東均, 大森剛志, 関根裕治, 張鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] トンネルの長期変形挙動に関するモデル実験及び解析評価手法の研究-その3 : ひずみ軟化型弾粘塑性構成モデルによるトンネル模型実験の解析-2007

    • Author(s)
      大森剛志, 黒瀬浩公, 田坂嘉章, 関根裕治, 張鋒
    • Journal Title

      第42回地盤工学研究発表会講演集 42巻(印刷中)

    • Related Report
      2006 Annual Research Report
  • [Presentation] Tests on shear strength and creep behavior of sedimentary soft rock under triaxial and plane-strain conditions2007

    • Author(s)
      H. Aung, K. Naito, M. Iwata, B. Ye, A. Yashima, F. Zhang
    • Organizer
      Proc. of the 13th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering
    • Place of Presentation
      Kolkota
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2006-04-01   Modified: 2016-04-21  

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