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Study on Super Long Life Fatigue Behavior and Extension of the Life of Steel Bridges

Research Project

Project/Area Number 06838008
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 都市施設保全工学
Research Institutionkansai University

Principal Investigator

SAKANO Masahiro  Kansai University, Department of Civil Engineering, Associate Professor, 工学部, 助教授 (50143201)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordssteel bridge / fatigue / super long life / plate girder / variable loading / design load / life avaluatin / cut-off limit / 強度等級 / 実験 / きれつ進展 / 寿命予測
Research Abstract

Long-life variable amplitude fatigue tests are performed using plate girder specimens with full-sized connection details for transverse stiffeners, web penetrations and flange attachments.
(1) Fatigue cracks are initiated from the fillet weld toe at the stiffener end on both the tension side and compression side, from blow holes contained in web-to-flange longitudinal fillet welds, and from the transverse fillet weld toe of the patch plate on the compression flange. The fatigue failure life of all four details of the transverse stiffener connections satisfies JSSC category D.
(2) Fatigue strength of web penetration specimens, expressed by the principal stress, between the groove welded specimen and fillet welded ones can be estimated by an effect of the weld toe configurations on the stress distribution.
(3) Fatigue cracks are initiated from root gap and toe of transverse fillet weld between an attachment and a flange plate. Fatigue strength of the plate girder flange with a patch-plate-type attachment is demonstrated to be lower than the JSSC Category-F.
(4) A simulation analysis of traffic loading is performed to propose simultaneous loading factors for fatigue assessment of urban expressway bridges. As a result, the simultaneous loading factor for single lane can be presented simply by the function of only the bridge span and that for double lanes rather simply as the constant value.
(5) The linear cumulative damage rule using the cut-off limit regulated against Shinkansen-type variable amplitude stresses is found to give more than 30% under estimation for fatigue damage in some cases of bridge members.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 板野,昌弘・藤野,陽三 長井,正嗣・三上,市藏: "300年耐用鋼道路橋の疲労設計法" 鋼構造年次論文報告集. 2. 643-650 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 板野,昌弘・三上,市藏 米本,栄一・西村,剛: "垂直補剛材取付け部の鉄道橋変動荷重疲労実験" 構造工学論文集. 41A. 845-854 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 板野,昌弘・三上,市藏 村山,弘・森脇,清隆: "フランジ貫通型鉄道橋床組連結部の疲労強度" 構造工学論文集. 41A. 965-973 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 板野,昌弘・三上,市藏 鹿野,顕一・米本,栄一: "鋼道路橋の疲労設計のための垂直補剛材取付け部の変動荷重実験" 材料. 44. 557-561 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 板野,昌弘・三上,市藏 村山,弘・森脇,清隆: "ウェブ貫通型鉄道橋床組連結部の変動荷重疲労実験" 構造物の安全性および信頼性(JCOSSAR'95論文集). 3. 583-590 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 板野,昌弘・三上,市藏 森脇,清隆・佐島,豊: "鋼鉄道橋の疲労寿命評価法に関する一考察" 鋼構造年次論文報告集. 3. 147-154 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Sakano, Fujino, Nagai and Mikami: "Fatigue Design Concept for the 300-Year-Durable Steel IIighway Bridge" Journal of Constructional Steel. Vol.2. 643-650 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Sakano, Mikami, Yonemoto and Nishimura: "Railway Variable Amplitude Loading Fatigue Test of Transverse Stiffener Joint" Journal of Structural Engineering. Vol.41A. 845-854 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Sakano, Mikami, Murayama and Moriwaki: "Fatigue Strength of Railway Plate Girder with Web Penetration" Journal of Structural Engineering. Vol.41A. 965-973 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Sakano, Mikami, Kano and Yonemoto: "Variable Amplitude Loading Test of Transverse Stiffener Joints for Fatigue Design of Steel IIighway Bridges" Journal of the Society of Materials Science Japan. Vol.44, No.500. 557-561 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Sakano, Mikami, Murayama and Moriwaki: "Variable Amplitude Fatigue Test of Railway Plate Girders with Web Penetration" Proceedings of the Third Japan Conference on Structural Safety and Reliability. Vol.3. 583-590 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Sakano, Mikami, Moriwaki and Sashima: "On Fatigue Life Evaluation Methods for Steel Railway Bridges" Journal of Constructional Steel. Vol.3. 147-154 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 坂野,昌弘 他3名: "鋼道路橋の疲労設計のための垂直補鋼材取付け部の変動荷重実験" 材料. 44. 557-561 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 坂野,昌弘 他2名: "一般道路橋の疲労照査に用いる同時載荷係数の提案" 第3回構造物の安全性・信頼性に関する国内シンポジウム論文集. 261-268 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 坂野,昌弘 他3名: "ウェブ貫通型鉄道橋床組連結部の変動荷重疲労実験" 第3回構造物の安全性・信頼性に関する国内シンポジウム論文集. 583-590 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 坂野,昌弘 他3名: "鋼鉄道橋の疲労寿命評価法に関する一考察" 鋼構造年次論文報告集. 3. 147-154 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 坂野昌弘,他3名: "300年耐用鋼道路橋の疲労設計法" 鋼構造年次論文報告集. 2. 643-650 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 坂野昌弘,他3名: "垂直補剛材取付部の鉄道橋変動荷重疲労実験" 構造工学論文集. 41A. (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 坂野昌弘,他2名: "都市高速道路橋の疲労照査に用いる同時載荷係数の提案" 構造工学論文集. 41A. (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 坂野昌弘,他3名: "フランジ貫通型鉄道橋床組連結部の疲労強度" 構造工学論文集. 41A. (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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