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Control of Shear Failure of Reinforced Concrte Member Subjected to Combined Load

Research Project

Project/Area Number 04650415
Research Category

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

Allocation TypeSingle-year Grants
Research Field コンクリート工学・土木材料・施工
Research InstitutionHokkaido University

Principal Investigator

SAEKI Noboru  Hokkaido Univ., Fac.of Eng., Professor, 工学部, 教授 (80002004)

Co-Investigator(Kenkyū-buntansha) SHIMURA Kazunori  Hokkaido Univ., Fac.of Eng, Instructor, 工学部, 助手 (60187474)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1993: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1992: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsTorsion / Bending / Shear / Combined load / Space truss model / RC plate model / Shear strain / Effective cover / コンクリートの引張応力 / ねじり剛性 / 変形性状 / 有効かぶり厚
Research Abstract

The ultimate strength and failure modes of reinforced concrete member subjected to combined torsion, bending and shear are investigated by the advanced space truss theory. Then, deformation behavior of members under torsion is estimated by RC plate model. The results of investigation are described as follows in each sections.
(1) Ultinate strength and failure modes of reinforced concrete member subjected to combined torsion, bending and shear
The space truss theory as typical method for torsional problems is advanced by superposing torsional, bending and shear force, and fundamental equations are derived. By using an tierative method stress and strain for an arbitrary combination of loads are calculated and checked to failure. Failure modes under torsion and bending are classified as 1)yielding of transverse bars, 2)crushing of diagonal concrete struts, 3)compressive-shear fracture of compressive region and 4)flexural fracture. According to the comparison of calculated values and results of experiments, the proposed method is available to ptedict the ultimate strength and failure mode.
(2) Deformation behavior of reinforced concrete member subjected to torsion
At first, effective cross section against torsion is assumed to reinforced concrete plates. Then fundamental equations are derived from equilibrium compatibility conditions considering tensile stress of concrete. Reduction of stiffness in post cracked region is estimated by effective cover of concrete using the proposed index of shear strain at cover. In analysis, an iterative method is used. Calculated values estimate finely whole deformation behavior of rectangular sections and T-shaped sections.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 佐伯 昇: "ねじりと純曲げの組合わせ荷重を受ける鉄筋コンクリート部材の耐力" 土木学会論文集. 442. 35-42 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 下西 勝: "ねじりと曲げの組合わせ荷重を受けるRC部材の破壊パターンと耐力" 土木学会北海道支部論文報告集. 48. 909-914 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 下西 勝: "曲げとねじりの組合わせ荷重を受けるRC桁の耐力" 土木学会年次学術講演会講演概要集第5部. 47. 802-803 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 志村和紀: "ねじりと曲げの組合わせ荷重を受ける鉄筋コンクリート部材の耐力" セメント・コンクリート論文集. 46. 732-737 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 志村和紀: "ねじりを受けるRC部材の挙動に及ぼすかぶりの影響" 土木学会北海道支部論文報告集. 49. 959-962 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 原田希樹: "ねじりを受けるT形RC部材の耐力と変形" 土木学会北海道支部論文報告集. 50. 1078-1081 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Noboru, Saeki: "Resistance of Reinforced Concrete member Subjected to Torsion and Pure Bending" Journal of Materials, Concrete Structures and Pavements, JSCE. 466/V-19. 35-42 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Masaru, Shimonishi: "Ultimate Strength and Failure Modes of Reinforced Concrete Memver Subjected to Bending and Torsion" Proc.of Hokkaido Branch of JSCE. 48. 904-914 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Masaru, Shimonishi: "Ultimate strength of RC Beam Subjected to Combined Bending and Torsion" Proc.of Annual Meeting, JSCE. 47. 802-803 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kazunori, Shimura: "Ultimate Strength of Reinforced Concrete Members Subjected to Combined Torsion and Bending" JCA Proc.of Cement and Concrete. 46. 732-737 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kazunori, Shimura: "Influence of Cover Thickness on Torsional Behavior of RC Member" Proc.of Hokkaido Branch of JSCE. 49. 959-962 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Mareki, Harada: "Ultimate Strength and Deformation of T-Shaped Reinforced Concrete Member Subjected to Torsion" Proc.of Hokkaido Branch of JSCE. 50. 1078-1081 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 佐伯昇: "ねじりと純曲げの組合わせ荷重を受ける鉄筋コンクリート部材の耐力" 土木学会論文集. 442. 35-42 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 下西勝: "ねじりと曲げの組合わせ荷重を受けるRC部材の破壊パターンと耐力" 土木学会北海道支部論文報告集. 48. 909-914 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 下西勝: "曲げとねじりの組合わせ荷重を受けるRC桁の耐力" 土木学会年次学術講演会講演概要集第5部. 47. 802-803 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 志村和紀: "ねじりと曲げの組合わせ荷重を受ける鉄筋コンクリート部材の耐力" セメント・コンクリート論文集. 46. 732-737 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 志村和紀: "ねじりを受けるRC部材の挙動に及ぼすかぶりの影響" 土木学会北海道支部論文報告集. 49. 959-962 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 原田希樹: "ねじりを受けるT形RC部材の耐力と変形" 土木学会北海道支部論文報告集. 50. 1078-1081 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 志村 和紀: "ねじりと曲げの組合わせ荷重を受ける鉄筋コンクリート部材の耐力" セメント・コンクリート論文集. 46. 732-737 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 下西 勝: "曲げとねじりの組合わせ荷重を受けるRC桁の耐力" 土木学会第47回年次学術講演会講演概要集. 802-803 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 志村 和紀: "ねじりを受けるRC部材の挙動に及ぼすかぶりの影響" 土木学会北海道支部論文報告集. 49. 959-962 (1993)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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