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Proposal of bridge structural health monitoring method based on vibration energy

Research Project

Project/Area Number 17H06722
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionUniversity of Yamanashi

Principal Investigator

TAKEYA Kouichi  山梨大学, 大学院総合研究部, 助教 (70803526)

Research Collaborator OTA Koharu  
Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords橋梁 / 鋼構造 / 振動特性 / 構造減衰 / 逆解析 / 構造同定 / 橋梁振動 / 減衰比 / RD法 / 振動エネルギー / 加速度応答 / 実橋梁 / 加速度 / 交通環境
Outline of Final Research Achievements

In this research, the traffic environment and vibration characteristics of the bridge superstructure were clarified, and the identification method of the damping ratio related to the vibration energy was examined.
First, acceleration measurements were carried out on three road bridges, and vibration characteristics such as vibration modes, damping ratios, and vibration energy were analyzed. Since the damping characteristics vary due to environmental disturbances such as traffic environment and air temperature, the effects of disturbances were analyzed and proposed a method for evaluating damping ratio. In addition, a prototype monitoring system, which consists of measurement, communication and recording devices to observe the dynamic behavior of the superstructure of the bridge, was constructed. Long-Term monitoring on the actual road bridge has been carried out, and the analysis method of damping characteristics considering disturbances was improved.

Academic Significance and Societal Importance of the Research Achievements

本研究は,橋梁構造物のヘルスモニタリングに期待されている「劣化損傷の早期検知と定量的評価」を大きな目標としており,既存の研究で得られた知見を基に,減衰特性と振動エネルギーという視点から分析検討を試みた.橋梁構造物の振動特性は交通や気温など外乱の影響が相対的に大きく,同定される振動特性が分布を持つことから,汎用的な劣化損傷の検知は困難であった.本研究では,振動エネルギーに関連する減衰特性に着目して外乱の影響を考慮した分析を行っており,得られた成果は橋梁構造物のヘルスモニタリングの社会実装のための学術的・社会的意義を有するものである.

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (12 results)

All 2018 Other

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (8 results) (of which Int'l Joint Research: 1 results) Remarks (2 results)

  • [Journal Article] PROPOSAL OF GENERATION TYPE TMD WITH ELECTROMAGNETIC DAMPING DEVICE AND ITS APPLICATION TO AN ACTUAL BRIDGE UNDER SERVICE2018

    • Author(s)
      岩吹啓史, 佐々木栄一, 竹谷晃一, 長船寿一, 安田英明
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))

      Volume: 74 Issue: 3 Pages: 417-430

    • DOI

      10.2208/jscejseee.74.417

    • NAID

      130007520034

    • ISSN
      2185-4653
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 橋梁桁端部のたわみ角に着目したヘルスモニタリングの基礎的検討2018

    • Author(s)
      竹谷晃一,小野拓朗
    • Journal Title

      土木学会第45回関東支部技術研究発表会概要集

      Volume: -

    • Related Report
      2017 Annual Research Report
  • [Presentation] 橋梁ヘルスモニタリングのための加速度応答に基づく減衰評価方法の検討2018

    • Author(s)
      竹谷晃一
    • Organizer
      土木学会第73回年次学術講演会講演概要集
    • Related Report
      2018 Annual Research Report
  • [Presentation] 橋梁桁端部の動的挙動に着目した構造動特性の分析法2018

    • Author(s)
      太田小春
    • Organizer
      土木学会第73回年次学術講演会講演概要集
    • Related Report
      2018 Annual Research Report
  • [Presentation] 橋梁桁端部のたわみ角に着目したヘルスモニタリングの基礎的検討2018

    • Author(s)
      竹谷晃一
    • Organizer
      土木学会第45回関東支部技術研究発表会概要集
    • Related Report
      2018 Annual Research Report
  • [Presentation] 動画像を用いた橋梁の活荷重挙動の分析方法の基礎的検討2018

    • Author(s)
      竹谷晃一
    • Organizer
      鋼構造年次論文報告集
    • Related Report
      2018 Annual Research Report
  • [Presentation] Analysis of Traffic Environment and Dynamic Behavior of Bridge Girders based on Image Sensing Techniques2018

    • Author(s)
      竹谷晃一
    • Organizer
      4th International Conference on Science, Engineering and Environment
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 橋梁桁端部のたわみ角に着目したヘルスモニタリングの基礎的検討2018

    • Author(s)
      竹谷晃一
    • Organizer
      土木学会第45回関東支部技術研究発表会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 橋梁ヘルスモニタリングのための加速度応答に基づく減衰評価方法の検討2018

    • Author(s)
      竹谷晃一
    • Organizer
      土木学会第73回年次学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 橋梁桁端部の動的挙動に着目した構造動特性の分析法2018

    • Author(s)
      太田小春
    • Organizer
      土木学会第73回年次学術講演会
    • Related Report
      2017 Annual Research Report
  • [Remarks] 山梨大学土木環境工学科構造研究室 竹谷晃一HP

    • URL

      http://www.ccn.yamanashi.ac.jp/~ktakeya/home.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] 山梨大学構造研究室 竹谷晃一

    • URL

      http://www.ccn.yamanashi.ac.jp/~ktakeya/home.html

    • Related Report
      2017 Annual Research Report

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Published: 2017-08-25   Modified: 2020-03-30  

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