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Structural Performance Evaluation and Repair Effect Verification of Existing RC Beam-Column Joint with Low Strength Concrete

Research Project

Project/Area Number 25820261
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Building structures/Materials
Research InstitutionUniversity of Tsukuba

Principal Investigator

YASOJIMA AKIRA  筑波大学, システム情報系, 助教 (80437574)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords低強度コンクリート / 柱梁接合部 / 丸鋼 / 多数回繰返し載荷 / 主筋抜け出し / 腰壁 / 垂れ壁 / エポキシ補修 / 二次壁 / 接合部アスペクト比 / 接合部せん断破壊 / 多数回繰返し荷重 / エポキシ樹脂 / 十字形 / ト形 / 等価粘性減衰定数
Outline of Final Research Achievements

In this research, to establish seismic performance evaluation method for existing RC buildings with low strength concrete, the experimental studies by full-scale beam-column joint specimens were carried out. Based on the experimental results, the structural performance of beam-column joints with low strength concrete was investigated, and the repair effect caused by epoxy resin injection method was verified. It showed clearly that the beam-column joints with plain round bar and low strength concrete had two failure modes: beam end concrete crushing after slippage of beam main reinforcement or joint shear failure, and concrete strength and joint aspect ratio were main structure factors to decide the failure mode. Moreover, it was confirmed that injection of epoxy resin improved the maximum strength of beam-column joint.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (8 results)

All 2016 2015 2014 2013

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (7 results)

  • [Journal Article] 低強度コンクリート柱梁接合部の耐震性能に関する実験的研究2014

    • Author(s)
      五十嵐大騎,八十島章
    • Journal Title

      コンクリート工学年次論文集

      Volume: 36 Pages: 235-240

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 既存低強度コンクリート柱梁接合部の構造性能における腰壁・垂れ壁の影響(その1:十字形柱梁接合部)2016

    • Author(s)
      佐野達彦,八十島章
    • Organizer
      日本建築学会
    • Place of Presentation
      福岡大学(福岡県福岡市)
    • Year and Date
      2016-08-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] 既存低強度コンクリート柱梁接合部の構造性能における腰壁・垂れ壁の影響(その2:ト形柱梁接合部)2016

    • Author(s)
      八十島章,佐野達彦
    • Organizer
      日本建築学会
    • Place of Presentation
      福岡大学(福岡県福岡市)
    • Year and Date
      2016-08-24
    • Related Report
      2015 Annual Research Report
  • [Presentation] 低強度コンクリート柱梁接合部のエポキシ樹脂補修効果2015

    • Author(s)
      八十島章
    • Organizer
      日本建築学会
    • Place of Presentation
      東海大学(神奈川県平塚市)
    • Year and Date
      2015-09-04
    • Related Report
      2015 Annual Research Report
  • [Presentation] 既存低強度コンクリート柱梁接合部の構造性能評価に関する研究2014

    • Author(s)
      八十島章
    • Organizer
      2014年度日本建築学会大会(近畿)
    • Place of Presentation
      神戸大学(兵庫)
    • Year and Date
      2014-09-12 – 2014-09-14
    • Related Report
      2014 Research-status Report
  • [Presentation] 低強度コンクリート柱梁接合部のせん断耐力に関する実験的研究2014

    • Author(s)
      五十嵐大騎
    • Organizer
      2014年度日本建築学会大会(近畿)
    • Place of Presentation
      神戸大学(兵庫)
    • Year and Date
      2014-09-12 – 2014-09-14
    • Related Report
      2014 Research-status Report
  • [Presentation] 低強度コンクリート柱梁接合部の構造性能に関する研究(その1 十字形接合部の実験概要)2013

    • Author(s)
      八十島章
    • Organizer
      日本建築学会2013年度大会(北海道)
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 低強度コンクリート柱梁接合部の構造性能に関する研究(その2 十字形接合部の実験結果)2013

    • Author(s)
      五十嵐大騎
    • Organizer
      日本建築学会2013年度大会(北海道)
    • Place of Presentation
      北海道大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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