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Evaluation of safety and the collapse mechanism caused by sudden failure of members in truss bridges

Research Project

Project/Area Number 22560490
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionToyota National College of Technology

Principal Investigator

KAWANISHI Naoki  豊田工業高等専門学校, 環境都市工学科, 准教授 (60300589)

Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsトラス橋 / リダンダンシー / 衝撃係数 / 進行性破壊 / リダンダンシー解析 / 部材j破断 / 腐食 / 衝衝係数
Research Abstract

The dynamic stress amplification resulting from a sudden failure of a member has a considerable influence on a progress to the overall collapse. Therefore, this dynamic effect must be included in the conventional static redundancy analysis as an impact factor. The calculated values of the impact factor vary widely from member to member. However, the impact factors for critical members in the redundancy analysis take almost a constant value that ranges from 1.4 to 1.8. In order to predict approximately the magnitude of the member impact factors without carrying out the dynamic response analysis, a simplified method based on the RMS mode combination method is proposed. The accuracy of the member impact factors calculated by this simplified method is moderate.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (8 results)

All 2012 2011 2010 Other

All Journal Article (4 results) (of which Peer Reviewed: 1 results) Presentation (4 results)

  • [Journal Article] 腐食欠損による鋼箱型断面柱の初期不整および耐荷力の変化2012

    • Author(s)
      中田千夏
    • Journal Title

      豊田工業高等専門学校研究紀要

      Volume: 45号 Pages: 49-56

    • Related Report
      2012 Annual Research Report
  • [Journal Article] すき間長さの違いが円筒鋼製橋脚の耐震性能に与える影響2012

    • Author(s)
      忠和男
    • Journal Title

      豊田工業高等専門学校研究紀要

      Volume: 45号 Pages: 43-48

    • Related Report
      2012 Annual Research Report
  • [Journal Article] Dynamic Stress Amplification Caused by Sudden Failure of Tension Members in Steel Truss Bridges2011

    • Author(s)
      Yoshiaki Goto
    • Journal Title

      Journal of Structural Engineering, ASCE

      Volume: Vol.137 Issue: 8 Pages: 850-861

    • DOI

      10.1061/(asce)st.1943-541x.0000338

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamic Stress Amplification Caused by Sudden Failure of Tension Members in Steel Truss Bridges

    • Author(s)
      Yoshiaki Goto*, Naoki Kawanishi,and Issei Honda*
    • Journal Title

      Journal of Structural Engineering, ASCE

      Volume: Vol.137 Pages: 850-861

    • Related Report
      2012 Final Research Report
  • [Presentation] 弾塑性解析によるトラス橋の部材破断時のリダンダンシー評価に関する一考察2011

    • Author(s)
      川西直樹
    • Organizer
      土木学会第66回年次講演会
    • Place of Presentation
      愛媛大学
    • Year and Date
      2011-09-07
    • Related Report
      2011 Annual Research Report
  • [Presentation] 弾塑性解析によるトラス橋の部材破断時のリダンダンシー評価関する一考察2011

    • Author(s)
      川西直樹,後藤芳顯
    • Organizer
      土木学会第66回年次講演会
    • Related Report
      2012 Final Research Report
  • [Presentation] リダンダンシー解析における鋼トラス橋部材破断時の衝撃係数の特性とその推定法2010

    • Author(s)
      川西直樹
    • Organizer
      土木学会
    • Place of Presentation
      北海道大学
    • Year and Date
      2010-09-03
    • Related Report
      2010 Annual Research Report
  • [Presentation] リダンダンシー解析における鋼トラス橋部材破断時の衝撃係数の特性とその推定法2010

    • Author(s)
      本多一成,後藤芳顯,川西直樹
    • Organizer
      第65回土木学会年次講演会
    • Related Report
      2012 Final Research Report

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Published: 2010-08-23   Modified: 2019-07-29  

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