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Probabilistic Evaluation of Column Over-Design Factore for Fram Structures

Research Project

Project/Area Number 10555199
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field Building structures/materials
Research InstitutionNagoya Institute of Technology

Principal Investigator

ONO Tetsuro  Professor, Dept.of Architecture, Nagoya Institute of Technology, 工学部, 教授 (30024300)

Co-Investigator(Kenkyū-buntansha) IDOTA Hideki  Associate professor, Dept.of Architccture, Nagoya Institute of Technology, 工学部, 助教授 (10203192)
ZHAO Yangang  Associate professor, Dept.of Architecture, Nagoya Institute of Technology, 工学部, 助教授 (50283479)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 2000: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1999: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1998: ¥3,000,000 (Direct Cost: ¥3,000,000)
Keywordsframe structures / entire failure pattern / stochastic limit analysis / column over-design factor / target COF / reliability based design
Research Abstract

In the earthquake resistance design of frame structures, the mode in entire failure pattern, which allows the yielding of all the beams in flexure prior to possible yielding of columns, is generally considered to be a preferable mode. Structures are therefore generally weak-beam-strong-column designed with a column over-design factor. In reality however, the designed weak-beam-strong-column structures may not collapse according to the preferable failure mode because of the large uncertainties in the external loads and the member strengths. These uncertainties may change the column over-design factor (COF) and the structure may collapse according to some unpreferable failure modes such as the weak story mechanisms. The object of this study is probabilistic evaluation of the target values of column over-design factors for which the occurrence probability of unpreferable failure modes can be limited to within a specific tolerance. A stochastic limit analysis procedure using the Linear Programing method and the First Order Reliability Method is developed, and the likely failure modes of weak-beam-strong-column designed structures are investigated using this procedure. The target value of column over-design factor is discussed in probabilistic terms. It is found that a much higher value of column over-design factor is required in the case of uncertain loads and member strengths than is expected in deterministic cases.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Ono,T.,Zhao,Y.G.and Ito,T.: "Stochastic evaluation of column over design factor for framed structures"Journal of Structural Engineering, ASCE. 126.5. 605-611 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 小野徹郎,趙衍剛,吉原和宏: "確率極限解析法を用いた平蔓骨組構造物のCOF評価法"構造工学論文集,JSCE/AIJ. 45B. 421-426 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Ono,T.,Zhao,Y.G. at.el: "On the COF of weak-beam-strong-column designed one-span steel structures"Structural Safety and Reliability, Shiraishi (ed), Balkema. 1. 183-190 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Ono, T., Zhao, Y.G.and Ito, T.: "Stochastic evaluation of column over design factor for framed structures"Journal of Structural Engineering, ASCE. Vol.126, No.5. 605-611 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Ono, T, Zhao, Y.G., Yoshihara, K.: "The COF evaluation of frame structures using stochastic limit analysis"Journal of Structural Engineering, JSCE/AIJ. Vol.45B. 421-426 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Ono, T., Zhao, Y.G.and Yoshihara, K.: "On the COF of weak-beam-strong-column designed one-span steel structures"Structural Safety and Reliability, Shiraishi, Shinozuka & Wen (eds), Balkema. Vol.1. 183-190 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Ono,T.,Zhao,Y.G.& Ito,T.: "Probabilistic Evaluation of Column Overdesign Factors for Frames"Journal of Structural Engineering,ASCE. 126.5. 605-611 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 小野徹郎.趙衍剛 等: "確率極限解析法を用いた平面骨組構造物のCOF評価法"構造工学論文集. Vol.45B. 421-426 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 小野徹郎.趙衍剛 等: "Probabilistic Evaluation of Column Overdesign Factors for Frames"Journal of Structural Engineering,ASCE. Vol.126 No.5. (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 小野徹郎: "確率極限解析法を用いた平面骨組構造物のCOF評価法" 構造工学論文集. Vol.45B. (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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