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2001 Fiscal Year Final Research Report Summary

Seismic Design Methodology Based on Reliability Theory in Consideration of Lifetime

Research Project

Project/Area Number 11450168
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionTohoku University

Principal Investigator

SUZUKI Motoyuki  Tohoku University, Graduate School of Eng., Professor, 大学院・工学研究科, 教授 (60124591)

Co-Investigator(Kenkyū-buntansha) AKIYAMA Mitsuyoshi  Tohoku University, Graduate School of Eng., Lecturer, 大学院・工学研究科, 講師 (00302191)
Project Period (FY) 1999 – 2001
Keywordslifetime / reliability theory / seismic design / RC bridge pier / pile foundation / seismic risk analysis / structural optimal theory / damage index
Research Abstract

1. New evaluation method of lifetime risk in RC member is proposed on the basis probability matrix. It is clarified that current seismic method does not necessarily provide sufficient safety during the lifetime of RC structure.
2. A new evaluation method for the probability of failure of a structural system based on reliability theory is proposed. From the numerical examples, it is demonstrated that this method possesses high accuracy and simplicity.
3. Design flow charts which can cope with an arbitrarily given safety level are formulated by reliability-based optimal theory considering structural system. Then the proposed method is applied to the seismic design of rigid-frame bridge piers and RC bridge pier. As a result, it is confirmed that (1) the RC bridge piers so as to attain the prescribed reliability can be designed by the proposal method and (2) the safety of bridge piers, which are deigned based on the current code, are not uniform.
4. The effect of uncertainties in reinforced concrete (RC) bridge systems on the response of the RC bridge pier and cast in place pile were statistically and analytically studied, and quantitative evaluations of variations in that response were obtained. Then seismic design method was discussed in which such uncertainties were considered in order to keep cast in place pile from yielding. The horizontal seismic coefficient for cast in place pile was proposed based on the system reliability theory and dynamic analysis for the bridge systems.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 秋山充良他: "構造系信頼性評価法と構造最適化手法を用いたRC橋脚と場所打ち杭基礎間の耐力階層化に関する基礎的研究"構造工学論文集. Vol.47A. 743-752 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 秋山充良他: "信頼性理論を用いた構造最適設計手法の提案およびRC橋脚の耐震安全性評価への適用"土木学会論文集. No.662/V-49. 185-204 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 秋山充良他: "信頼性理論と構造最適化手法を用いた連続ラーメン橋の橋脚躯体の耐震設計"コンクリート工学年次論文集. Vol.22,No.3. 1297-1302 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木基行他: "信頼性理論に基づくRC橋梁システムの地震時安全性評価法"土木学会論文集. No.648/V-47. 9-21 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 秋山充良他: "鉄筋コンクリート橋梁システムに介在する不確定要因を考慮した場所打ち杭基礎の設計水平震度評価に関する研究"土木学会論文集. No.641/V-46. 187-203 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山崎康紀他: "信頼性理論に基づく橋梁システムの地震時安全性評価法に関する研究"コンクリート工学年次論文報告集. Vol.21,No.3. 1279-1284 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 土井充他: "信頼性理論に基づくRC橋脚-杭基礎間の地震時損傷配分に関する研究"コンクリート工学年次論文報告集. Vol.21,No.3. 1285-1290 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鈴木基行他: "構造変数間の相関がRC橋脚の耐震安全性に及ぼす影響"土木学会論文集. No.620/V-43. 175-185 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Akiyama et al.: "Evaluation of Horizontal Seismic Coefficient for Cast in Place Pile Using Reliability-Based Optimal Design Considering Structural System"Proc. of JSCE, Journal of Structural Engineering. Vol. 47A. 743-752 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Akiyama et al.: "Reliability-Based Optimal Design Considering Structural System and Its Application to Evaluation of Seismic Performance of RC Bridge Pier"Proc. of JSCE. No. 662/V-49. 185-204 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Akiyama et al.: "Seismic Design for RC Pier of Rigid-Frame-Bridge Based on Reliability Theory and Structural Optimization Procedure"Proc. of the JCI. Vol. 22, No. 3. 1297-1302 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Suzuki et al.: "Safety Evaluation Method of RC Bridge Systems under Earthquake Based on Reliability Theory"Proc. of JSCE. No. 648/V-47. 9-21 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Akiyama et al.: "Evaluation of Horizontal Seismic Coefficient for Cast in Place Pile under the Consideration of Uncertainties in Reinforced Concrete Bridge Systems"Proc. of JSCE. No. 641/V-46. 187-203 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Yamazaki et al.: "Safety Evaluation of Bridge System under Earthquake Based on Reliability Theory"Proc. of the JCI. Vol.21, No.3. 1279-1284 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Doi et al.: "The Study on Damage Allocation between RC Bridge Pier and Pile Foundation under Earthquake Based on Reliability Theory"Proc. of the JCI. Vol. 21, No. 3. 1285-1290 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Suzuki et al.: "Influence of the Correlation between Structural Variables on the Seismic Safety of RC Bridge Pier"Proc. of JSCE. No. 620/V-43. 175-185 (1999)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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