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Shear Behavior of Reinforced Concrete Beam-Column Joints Subjected to Bi-Lateral and Varying, Axial Loads

Research Project

Project/Area Number 10650570
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Building structures/materials
Research InstitutionTOKYO METROPOLITAN UNIVERSITY

Principal Investigator

KITAYAMA Kazuhiro  Tokyo Metropolitan Univ., Dept.of Architecture, Associate Professor, 大学院・工学研究科, 助教授 (70204922)

Co-Investigator(Kenkyū-buntansha) KISHIDA Shinji  Tokyo Metropolitan Univ., Dept.of Architecture, Research Associate, 工学研究科, 助手 (10322348)
小山 明男  東京都立大学, 工学研究科, 助手 (90285099)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1999: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1998: ¥900,000 (Direct Cost: ¥900,000)
KeywordsReinforced Concrete / Beam-Clumn Joint / Bi-Lateral Loading / Shear / Anchorage / Earthquake Resistant Design / 付着 / 変動軸力 / 地震応答 / 上下動
Research Abstract

Two three-dimensional interior beam-column joint subassemblage specimens removed from a reinforced concrete space frame were tested to investigate failure mechanism in a joint panel under bi-lateral and axial loading. The anchorage ability of beam bars within a joint was chosen as a test parameter. Steel plates were placed at the beam critical sections in one specimen to carry directly the anchorage reaction force from beam longitudinal bars to the joint panel concrete. Slabs were not placed in both specimens for simplified path of load transfer. Concrete compressive strength was 23 MPa. Result of the plane beam-column joint specimen tested last year was compared with that of three-dimensional specimens to research on the effect of transverse beams to joint behavior. All specimens failed in joint shear. Following conclusions are drawn from the test.
(1) Horizontal load carrying capacity for three-dimensional specimen with beam bar anchorage plates at beam critical sections and cracked t … More ransverse beams was enhanced to 1.1 times that without anchorage plates and 1.3 times that for plane specimen without transverse beams.
(2) Joint shear capacity was enhanced by confining action due to anchorage plates against the out-plane expansion of joint core concrete. On the other hand, anchorage plates at beam critical sections caused bond deterioration along beam bars within a joint because development length of beam bars was limitted equally to a column depth by the plate.
(3) Transverse beams framing into a joint contributed to enhance joint shear strength by the restriction to both expansion and damage of joint core concrete. Confining force by transverse beams to joint concrete was one fourth approximately of tensile force of longitudinal beam bars in loading direction.
(4) The shape of bi-directional interaction in joint shear capacity was regarded as not circle but square under bi-lateral loading in three-dimensional subassemblage specimens. This means that safety to earthquake excitations can be maintained for reinforced concrete beam-column joint in actual frames by designing joints to shear forces in each direction independently. Less

Report

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

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 田島祐之,北山和宏,奥田誠,岸田慎司: "RC内柱・梁接合部の破壊と柱・梁通し筋の付着性状との関係"コンクリート工学年次論文報告集. 22-3. 697-702 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 北山和宏,田島祐之,岸田慎司: "鉄筋コンクリート骨組内の接合部破壊と主筋付着性状との関係(その1、2)"日本建築学会大会学術講演梗概集. C-2構造IV. 829-832 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] KITAYAMA Kazuhiro, TAJIMA Yuji, OKUDA Makoto and KISHIDA Shinji: "Influences of Beam and Column Bar Bond on Failure Mechanism in Reinforced Concrete Interior Beam-Column Joints"Transactions of the Japan Concrete Institute. 22. 433-440 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 細野具貴,北山和宏,田島祐之,岸田慎司: "水平二方向加力を受けるRC内柱・梁接合部の破壊性状"コンクリート工学年次論文報告集. 23(投稿中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 森田真司,北山和宏,岸田慎司: "RC造柱・梁接合部の変形性状と入力せん断力に関する研究"コンクリート工学年次論文報告集. 23(投稿中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] KITAYAMA Kazuhiro, TAJIMA Yuji, OKUDA Makoto and KISHIDA Shinji: "Influences of Beam and Column Bar Bond on Failure Mechanism in Reinforced Concrete Interior Beam-Column Joints"Transactions of the Japan Concrete Institute. Vol.22. 433-440 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] KITAYAMA Kazuhiro, TAJIMA Yuji and KISHIDA Shinji: "Influences of Bond along Beam and Column Bars on Beam-Column Joint Failure in Reinforced Concrete Frame"Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, C-2, Structures. IV. 829-832 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] KITAYAMA Kazuhiro, HOSONO Tomotaka, TAJIMA Yuji and KISHIDA Shinji: "Failure Mechanism of R/C Interior Beam-Column Joint Subjected to Bi-Lateral Loading"Proceedings of the Japan Concrete Institute. Vol.23 (to be submitted). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] MORITA Shinji, KITAYAMA Kazuhiro and KISHIDA Shinji: "Deformation and Input Shear of Reinforced Concrete Beam-Column Joints"Proceedings of the Japan Concrete Institute. Vol.23 (to be submitted). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 森田真司、北山和宏、小山明男ほか: "RC内柱・梁接合部のせん断強度に及ぼす梁主筋付着と柱軸力の影響"コンクリート工学年次論文報告集. Vol.21-3. 679-684 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 北山和宏、横尾一知、小山明男: "兵庫県南部地震で被災した鉄筋コンクリート校舎の耐震性能と地震応答(その1、2)"日本建築学会大会学術講演梗概集. C-2構造IV. 653-656 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 白山貴志、北山和宏、小山明男: "鉄筋コンクリート外柱・梁接合部のせん断性状および強度に関する研究"日本建築学会大会学術講演梗概集. C-2構造IV. 977-978 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 小山明男、北山和宏、森田真司: "引張りおよび圧縮軸力を受けるRC内柱・梁接合部の破壊性状に関する研究(その1、2)"日本建築学会大会学術講演梗概集. C-2構造IV. 945-948 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 横尾一知、北山和宏ほか: "変動軸力が鉄筋コンクリート柱のせん断性状に与える影響" コンクリート工学年次論文報告集. 20-2. 475-480 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 森田真司、北山和宏ほか: "変動軸力を受ける鉄筋コンクリート外柱・梁接合部のせん断強度" 日本建築学会大会学術講演梗概集. C-2構造IV. 549-550 (1998)

    • Related Report
      1998 Annual Research Report

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

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