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Damage Evaluation and Limit States of Rocking Concrete Walls

Research Project

Project/Area Number 20K14870
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 23010:Building structures and materials-related
Research InstitutionNational Institute for Land and Infrastructure Management (2022)
Tokyo Institute of Technology (2020-2021)

Principal Investigator

Obara Taku  国土技術政策総合研究所, 建築研究部, 研究官 (50845451)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
KeywordsRC造壁 / 機能維持 / 損傷低減 / 損傷予測数値解析モデル / アンボンドPCaPC造 / 鉄筋コンクリート造壁 / 継続使用 / 損傷評価 / ロッキング性状 / アンボンドPCaPC / 継続使用性 / 圧縮損傷 / ロッキング特性 / 損傷制御 / 変形性能 / Fiberモデル / 高性能鉄筋コンクリート造壁 / セルフセンタリング / 早期復旧
Outline of Research at the Start

近年,国内外の地震被害では,鉄筋コンクリート(RC)造壁の損傷により建物の継続使用性が損なわれる事例が散見されている.本研究では,損傷を制御出来る高性能RC造壁の実現として,圧着型アンボンドプレキャストプレストレストコンクリート(アンボンドPCaPC)壁を開発し,損傷を予測できる数値解析モデルを提案する.

Outline of Final Research Achievements

Presently, current requirements of buildings are not only to secure human lives but also to maintain continuous functionality of buildings during and after hazards. One resilient structural system may be unbonded post-tensioned precast concrete structural system. In this study, the hysteresis loops of load-drift relation of tested unbonded post-tensioned precast concrete wall with energy dissipators (the hybrid wall) was numerically simulated with an inelastic multi-spring model. Numerical analysis was also conducted to quantify the damage level and four limit states (Serviceability limit state, Reparability limit state I, Reparability limit state II and Safety limit state) of the tested hybrid wall. The numerical model was able to evaluate the timing and determining factors of each limit state. As a result, the detailed damage levels of analyzed walls were successfully classified to have a good agreement with experimental results.

Academic Significance and Societal Importance of the Research Achievements

損傷制御型RC壁は,従来のRC壁より地震後も継続使用可能なことから,住機能の機能維持実現が期待できる.さらに,損傷制御型RC壁はプレキャスト工法による製作を想定していることから,工場で大量生産することで国内で社会問題となっていた職人の減少問題や工期・環境問題といった課題を十分に解決できる.
開発した数値解析ツールは,建物の機能維持・早期復旧性能を評価できる.具体的には,庁舎や学校,病院といった防災拠点施設では,地震後に継続使用可能か否かの判断が非常に重要であることから,ひび割れやコンクリートの圧壊等の損傷を予測できる解析ツールを用いれば,重要施設の高い継続使用性能の付与を達成出来る.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (19 results)

All 2023 2022 2021 2020

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (11 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] 袖壁を用いた実大五層鉄筋コンクたコンクリートの曲げ損傷量評価2023

    • Author(s)
      小原拓, 河野進, 向井智久
    • Journal Title

      日本建築学会構造系論文集

      Volume: 88 Pages: 113-122

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] EXPERIMENTAL FRAGILITY ANALYSIS OF NON-STRUCTURAL RC WALLS2022

    • Author(s)
      Priyana RAJBHANDARI, Taku OBARA, Susumu KONO
    • Journal Title

      コンクリート工学年次論文報告集

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Damage Prediction Tool for Rocking Concrete Walls2022

    • Author(s)
      T. Obara, S. Kono and D. Mukai
    • Journal Title

      12NCEE

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Numerical analysis on flexural behavior of unbonded post-tensioned reinforced concrete beams considering the buckling and rupture of longitudinal reinforcement2022

    • Author(s)
      O.Inui, T.Obara, S.Kono and D.Mukai
    • Journal Title

      12NCEE

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Shear performance evaluation of PHC piles under different levels of axial load ratio2021

    • Author(s)
      B-2.Yopi Prabowo Oktiovan, Taiga Otaki, Taku Obara, Susumu Kono, Yoichi Asai, Katsumi Kobayashi, Hidekazu Watanabe, David Mukai
    • Journal Title

      Earthquake Engineering and Structural Dynamics

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Damage Evaluation and Limit States of Rocking Concrete Walls with Energy Dissipaters2020

    • Author(s)
      Obara Taku、Kono Susumu、Mukai David
    • Journal Title

      Journal of Earthquake Engineering

      Volume: 26 Issue: 9 Pages: 1-27

    • DOI

      10.1080/13632469.2020.1835748

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 実大五層鉄筋コンクリート造建物の構造性能評価に着目した解析的研究2020

    • Author(s)
      木戸裕貴, 小原拓, 河野進, 向井智久
    • Journal Title

      コンクリート工学年次論文報告集

      Volume: 42 Pages: 79-84

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] マルチスプリングモデルを用いたアンボンドプレストレスト鉄筋コンクリート造梁の解析的研究2020

    • Author(s)
      伊縫旺真, 小原拓, 河野進
    • Journal Title

      コンクリート工学年次論文報告集

      Volume: 42 Pages: 439-444

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] アンボンドPCaPC 造壁の構造性能に関する実験的研究(その1~4)2022

    • Author(s)
      小原拓, 秋田悠揮, 藤岡知也, 張明嘉, 河野進, 谷昌典, 大村哲矢
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2022 Annual Research Report
  • [Presentation] Evaluation of Structural Performance of Unbonded Post-tensioned Precast Concrete Walls2021

    • Author(s)
      Cho M., Uemura K., Rajbhandari P., Obara, T., Kono, S. and David, M. and Tani M.
    • Organizer
      The Japan-Korea-Taiwan Joint Seminar on Earthquake Engineering for Building Structures
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Flexural Crack Width in Slender Rectangular RC Walls, Summaries of technical papers of annual meeting2021

    • Author(s)
      Netrattana C., Obara T., Kono S. and David M.
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2021 Research-status Report
  • [Presentation] 主筋の破断を考慮したアンボンドプレストレスト鉄筋コンクリート造梁の曲げ性能に関する解析的研究2021

    • Author(s)
      伊縫旺真,小原拓,河野進,David M.
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2021 Research-status Report
  • [Presentation] Evaluation of Structural Performance of Unbonded Post tensioned Precast Concrete Walls Part 1: Experimental Program and Results2021

    • Author(s)
      Rajbhandari P., 張明嘉,植村一貴,小原拓,河野進,David M.,谷昌典
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2021 Research-status Report
  • [Presentation] アンボンドPCaPC造壁の構造性能評価 その2:損傷状態とひび割れに関して2021

    • Author(s)
      張明嘉,植村一貴,小原拓,Rajbhandari P., 河野進,David M.,谷昌典
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2021 Research-status Report
  • [Presentation] Numerical analysis of unbonded post-tensioned reinforced concrete beams for resiliency evaluation2020

    • Author(s)
      Inui O., Obara T., Kono S., Mukai D.
    • Organizer
      The 17th World Conference on Earthquake Engineering
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental stduy on slender rectangular rc walls (PART 1)2020

    • Author(s)
      Netrattana C., Takahashi T., Obara T., Kono S., Mukai D.
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2020 Research-status Report
  • [Presentation] Experimental stduy on slender rectangular rc walls (PART 2)2020

    • Author(s)
      Takahashi T., Netrattana C., Obara T., Kono S., Mukai D.
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2020 Research-status Report
  • [Presentation] アンボンドプレストレストコンクリート梁の耐震性能に関する解析的研究2020

    • Author(s)
      伊縫旺真.小原拓, 河野進, Mukai D.
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2020 Research-status Report
  • [Presentation] PC鋼材の緊張力に着目したアンボンドPCaPC造壁の曲げ耐力に関する実験的研究2020

    • Author(s)
      植村一貴, 小原拓, 河野進, 柴山淳
    • Organizer
      日本建築学会大会学術講演梗概集構造系
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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