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Development of Method of Improving Inspectabilty of Existing Steel Girder Bridges

Research Project

Project/Area Number 23560570
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionKyushu Institute of Technology

Principal Investigator

YAMAGUCHI Eiki  九州工業大学, 工学(系)研究科(研究院), 教授 (90200609)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords端横桁 / 鋼鈑桁橋 / 腐食 / 点検孔 / ダブリング補強 / 補剛材 / 孔 / 維持管理
Research Abstract

The objective is to improve the inspectability of an end cross girder of a steel bridge. The finite element method is the mainstay, but the analysis of the whole bridge is an insurmountable task. The end cross girder model is therefore constructed first. Since the end cross girder is very susceptible to corrosion, the influence of corrosion on the load-carrying capacity of the end cross girder is investigated, showing that the corrosion can deteriorate the load-carrying capacity considerably. For the prevention, inspection is essential, but in many bridges it is not easy as the end cross girder is so close to a parapet. In the present study, the setup of an inspection hole is considered to solve the problem. To this end, the influence of an inspection hole on the load-carrying capacity is studied. It is found that not only the size and the shape but also the location influences load-carrying capacity. Reinforcement methods are then investigated and their effectiveness is revealed.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (8 results)

All 2014 2013

All Journal Article (6 results) (of which Peer Reviewed: 4 results) Presentation (2 results)

  • [Journal Article] 水平荷重を受ける端横桁の変形性状に及ぼす腐食の影響2014

    • Author(s)
      山口栄輝,辻浩幸
    • Journal Title

      構造工学論文集

      Volume: Vol. 60A Pages: 105-113

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] 水平荷重を受ける端横桁の変形性状に及ぼす腐食の影響2014

    • Author(s)
      山口栄輝,辻浩幸
    • Journal Title

      構造工学論文集

      Volume: 60A Pages: 105-113

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural Behavior of corroded steel bridge girder2013

    • Author(s)
      Eiki Yamaguchi, Toshiaki Akagi
    • Journal Title

      Proceedings of 6th Civil Engineering Conference in Asia Region

      Volume: TS7

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Load- carrying capacity of corroded end cross-girder2013

    • Author(s)
      Eiki Yamaguchi, Hiroyuki Tsuji
    • Journal Title

      Proceedings of the 29th US-Japan Bridge Engineering Workshop

      Pages: 223-230

    • Related Report
      2013 Final Research Report
  • [Journal Article] Structural Behavior of Corroded Steel Bridge Girder2013

    • Author(s)
      Eiki Yamaguch, Toshiaki Akagi.
    • Journal Title

      Proceedings of 6th Civil Engineering Conference in Asia Region

      Volume: TS7

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Load-carrying capacity of corroded end cross-girder2013

    • Author(s)
      Eiki Yamaguchi, Hiroyuki Tsuji
    • Journal Title

      Proceedings of 29th US-Japan Bridge Engineering Workshop

      Volume: 29 Pages: 223-230

    • Related Report
      2013 Annual Research Report
  • [Presentation] Influence of local corrosion on load-carrying capacity of steel I-section girder end2013

    • Author(s)
      Eiki Yamaguchi, Toshiaki Akagi
    • Organizer
      7th International Symposium on Steel Structures
    • Place of Presentation
      Jeju, Korea
    • Related Report
      2013 Final Research Report
  • [Presentation] Influence of Local Corrosion on Load-Carrying Capacity of Steel I-Section Girder End2013

    • Author(s)
      Eiki Yamaguchi, Toshiaki Akagi
    • Organizer
      7th International Symposium on Steel Structures
    • Place of Presentation
      Jeju, Korea
    • Related Report
      2013 Annual Research Report

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Published: 2011-08-05   Modified: 2019-07-29  

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