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Performance improvement and design method formulation of round steel bar dampers for steel frame structures

Research Project

Project/Area Number 19K04711
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 23010:Building structures and materials-related
Research InstitutionHiroshima University

Principal Investigator

Tagawa Hiroshi  広島大学, 先進理工系科学研究科(工), 教授 (70283629)

Co-Investigator(Kenkyū-buntansha) 陳 星辰  広島大学, 先進理工系科学研究科(工), 助教 (00816564)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords制振構造 / 座屈拘束ブレース / 丸鋼ダンパー / 載荷実験 / 有限要素解析 / 建築構造 / 鋼構造骨組 / 設計法 / 座屈拘束 / 方杖ダンパー / 繰返し載荷実験 / 心棒架構 / 鋼構造 / 地震応答解析
Outline of Research at the Start

本研究では、十分な変形性能を有すると考えられる丸鋼をエネルギー吸収部材として用いる建築鋼構造骨組に対する制振ダンパーの開発を進める。既往の研究において、柱梁接合部の梁下フランジに設置するタイプや座屈拘束ブレースの芯材として用いるタイプが提案され、実験により丸鋼ダンパーの良好な性能を確認している。本研究では丸鋼ダンパーの高性能化を目的として、(1)座屈拘束丸鋼ダンパーの挙動特性の詳細な分析による丸鋼ダンパーの性能向上、(2)方杖や座屈拘束柱などへの丸鋼ダンパーの適用範囲の拡張、(3)骨組応答を考慮した丸鋼ダンパー設計法の構築、の3つを中心に研究を進める。

Outline of Final Research Achievements

The results of this study outline as follows. (1) The beam-to-column welded connections with knee braces including buckling-restrained round steel bar dampers were investigated. Loading tests and finite element analyses revealed that the proposed system can spread the plasticity region at beam-ends. (2) The spine frame systems with buckling-restrained round steel dampers located between the column flanges were investigated. Cyclic loading tests revealed the hysteretic behavior and sufficient performance as energy dissipating devices. (3) Buckling-restrained braces using multiple round steel bar cores were investigated. This type of the brace enlarges the applicable range of the round steel bar core braces. Loading tests demonstrated the good performance of the proposed brace.

Academic Significance and Societal Importance of the Research Achievements

建築物の大地震への備えに対する強い社会的要請を背景に、近年では地震被害軽減のためダンパーと呼ばれるエネルギー吸収部材を用いた制振システムの研究が多方面で活発に実施されている。本研究では座屈拘束丸鋼ダンパーに着目し、方杖ブレースへの適用や心棒架構への適用、さらには新形式の座屈拘束ブレースへの適用を検討した。いずれも新しいコンセプトに基づいており設計法を整備するなど学術的意義が高い。地震に強い都市を構築していく上で有効な技術であり社会的な意義も高い研究成果である。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (11 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (8 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Steel rigid beam-to-column connections strengthened by buckling-restrained knee braces using round steel core bar dampers2022

    • Author(s)
      Munkhunur Togtokhbuyan、Tagawa Hiroshi、Chen Xingchen
    • Journal Title

      Engineering Structures

      Volume: 250 Pages: 113431-113431

    • DOI

      10.1016/j.engstruct.2021.113431

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Buckling-restrained steel bar damper for spine frame system2021

    • Author(s)
      Mateus Jhon Alexander Segura、Tagawa Hiroshi、Chen Xingchen
    • Journal Title

      Engineering Structures

      Volume: 229 Pages: 111593-111593

    • DOI

      10.1016/j.engstruct.2020.111593

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bolted beam-to-column connection with buckling-restrained round steel bar dampers2020

    • Author(s)
      Tagawa Hiroshi、Nagoya Yuta、Chen Xingchen
    • Journal Title

      Journal of Constructional Steel Research

      Volume: 169 Pages: 106036-106036

    • DOI

      10.1016/j.jcsr.2020.106036

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 角形鋼管を外管に用いた複数の丸鋼芯材による座屈拘束ブレースの載荷実験2022

    • Author(s)
      中塚壮太、張思晋、田川浩、陳星辰
    • Organizer
      日本建築学会中国支部研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 複数の丸鋼芯材を用いた座屈拘束ブレースの有限要素解析2022

    • Author(s)
      張思晋、田川浩、陳星辰
    • Organizer
      日本建築学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 並列心棒架構間にダンパーを配置した制振システムを有する鋼構造骨組の地震応答解析2021

    • Author(s)
      前田知隆,陳星辰、田川浩
    • Organizer
      日本建築学会中国支部研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] 複数の丸鋼芯材を用いた座屈拘束ブレースの繰返し載荷実験2021

    • Author(s)
      張思晋、田川浩、陳星辰
    • Organizer
      日本建築学会中国支部研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] Experimental study on steel beam-to-column joint strengthened by buckling-restrained knee brace using steel bar core2020

    • Author(s)
      Togtokhbuyan Munkhunu, H. Tagawa, X. Chen
    • Organizer
      17th World Conf. on Earthquake Eng. (17WCEE)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 並列心棒架構間に座屈拘束ブレースを配置した制振システム2020

    • Author(s)
      前田知隆、田川 浩、陳 星辰
    • Organizer
      2019年度日本建築学会中国支部研究発表会
    • Related Report
      2019 Research-status Report
  • [Presentation] Finite element analysis of steel beam-to-column joints strengthened by buckling-restrained knee bracing using steel bar cores2019

    • Author(s)
      Togtokhbuyan Munkhunu,Hiroshi Tagawa, Xingchen Chen
    • Organizer
      Twelfth Pacific Structural Steel Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cyclic loading tests on spine frame with buckling-restrained steel bar dampers2019

    • Author(s)
      Jhon A. Mateus, Hiroshi Tagawa, Xingchen Chen
    • Organizer
      Twelfth Pacific Structural Steel Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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