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Feasibility Study on Seismic Performance and Reinforcing System of Unreinforced Masonry Infill Walls Considering Out-of-plane Failure

Research Project

Project/Area Number 26420546
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Building structures/Materials
Research InstitutionThe University of Tokyo

Principal Investigator

Choi Ho  東京大学, 生産技術研究所, 助教 (40512009)

Co-Investigator(Kenkyū-buntansha) 松川 和人  東京大学, 生産技術研究所, 助教 (50709186)
晉 沂雄  東北大学, 工学研究科, 助教 (60727006)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords無補強組積造壁 / RC造架構 / 静的実験 / 振動台実験 / 耐震補強手法 / RC造建物
Outline of Final Research Achievements

The objectives of this study are to evaluate on the in-plane (IP) capacity of unreinforced masonry (URM) infill walls, and to investigate out-of-plane (OOP) behavior of URM infills and to identify the effectiveness of the tie system, which was proposed to enhance the infill stability under both IP and OOP forces. For this purpose, 1/4-scale, single-story, one-bay masonry infilled RC frame specimens were tested under the IP static cyclic loading and OOP dynamic excitation, respectively. Static cyclic loading tests were conducted to investigate the lateral force resisting mechanisms in the IP direction, which were evaluated based on the strain data measured on blocks forming the infill walls. Shaking table tests were performed to verify the effectiveness of the proposed tie system for preventing infill OOP failure under excitation simulating severe floor response in medium-rise buildings.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (9 results)

All 2016 2015 2014

All Journal Article (2 results) (of which Open Access: 2 results,  Peer Reviewed: 1 results) Presentation (7 results)

  • [Journal Article] Experimental Study on Out-of-plane Behavior of Infill Wall Built in RC Frames2016

    • Author(s)
      Ho Choi, Kazuto Matsukawa, Yasushi Sanada, Yoshiaki Nakano
    • Journal Title

      Bulletin of Earthquake Resistant Structure, Institute of Industrial Science, The University of Tokyo

      Volume: No.49

    • Related Report
      2016 Annual Research Report
    • Open Access
  • [Journal Article] トルコの組積造壁を有するRC架構の実験と解析による性能評価2016

    • Author(s)
      鈴木有美,真田靖士,崔琥,中埜良昭
    • Journal Title

      コンクリート工学年次論文集

      Volume: Vol.38, No.2 Pages: 841-846

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] In- and Out-of-plane Behavior of Infill Wall with Reinforcing Tie System Built in RC Frames2016

    • Author(s)
      Ho Choi, Kazuto Matsukawa, Yasushi Sanada, Yoshiaki Nakano
    • Organizer
      日本地震工学会大会
    • Place of Presentation
      高知工科大学(高知県高知市)
    • Year and Date
      2016-09-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] Seismic Capacity Evaluation of URM Infill Built in RC Frame -Part 4: Reevaluation of the URM Infill Shear Strengths-2016

    • Author(s)
      Tomoni Suzuki, Ho Choi, Yasushi Sanada, Kazuto Matsukawa, Yoshiaki Nakano
    • Organizer
      日本建築学会大会
    • Place of Presentation
      九州大学(福岡県福岡市)
    • Year and Date
      2016-08-24
    • Related Report
      2016 Annual Research Report
  • [Presentation] 多スパン内蔵無補強組積造壁の対角圧縮ストラットの形成メカニズムおよび負担せん断力の評価2015

    • Author(s)
      崔琥,Devjyoti Paul, 松川和人,真田靖士,中埜良昭,鈴木有美
    • Organizer
      日本地震工学会大会
    • Place of Presentation
      東京大学生産技術研究所(東京都)
    • Year and Date
      2015-11-19
    • Related Report
      2015 Research-status Report
  • [Presentation] Seismic Capacity Evaluation of URM Infill Built in RC Frame -Part1: Outline of Experiment-2015

    • Author(s)
      Ho Choi, Devjyoti Paul, Tomomi Suzuki, Kazuto Matsukawa, Yasushi Sanada, Yoshiaki Nakano
    • Organizer
      日本建築学会大会
    • Place of Presentation
      東海大学(神奈川県平塚市)
    • Year and Date
      2015-09-05
    • Related Report
      2015 Research-status Report
  • [Presentation] Seismic Capacity Evaluation of URM Infill Built in RC Frame -Part2: Failure Behavior and Lateral Load-Drift Relationships-2015

    • Author(s)
      Tomomi Suzuki, Devjyoti Paul, Ho Choi, Kazuto Matsukawa, Yasushi Sanada, Yoshiaki Nakano
    • Organizer
      日本建築学会大会
    • Place of Presentation
      東海大学(神奈川県平塚市)
    • Year and Date
      2015-09-05
    • Related Report
      2015 Research-status Report
  • [Presentation] Seismic Capacity Evaluation of URM Infill Built in RC Frame -Part2: Shear Strength Evaluation of URM Infill-2015

    • Author(s)
      Devjyoti Paul, Tomomi Suzuki, Ho Choi, Kazuto Matsukawa, Yasushi Sanada, Yoshiaki Nakano
    • Organizer
      日本建築学会大会
    • Place of Presentation
      東海大学(神奈川県平塚市)
    • Year and Date
      2015-09-05
    • Related Report
      2015 Research-status Report
  • [Presentation] Evaluation of Equivalent Diagonal Strut Mechanism and Shear Strength of URM Wall Infilled R/C Frame2014

    • Author(s)
      Ho CHOI, Kiwoong JIN, Kazuto MATSUKAWA, Yoshiaki NAKANO
    • Organizer
      European Conference on Earthquake Engineering and Seismology
    • Place of Presentation
      Istanbul, Turkey
    • Year and Date
      2014-08-24 – 2014-08-29
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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