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Developing copula based translational reliability methods for structural health monitoring

Research Project

Project/Area Number 15F15367
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionKyoto University

Principal Investigator

金 哲佑  京都大学, 工学(系)研究科(研究院), 教授 (80379487)

Co-Investigator(Kenkyū-buntansha) ZHANG YI  京都大学, 工学(系)研究科(研究院), 外国人特別研究員
Project Period (FY) 2015-11-09 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2017: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2016: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2015: ¥600,000 (Direct Cost: ¥600,000)
Keywords長期モニタリング / コピュラ / 異常検知 / マルコフ連鎖 / ヘルスモニタリング / 劣化予測
Outline of Annual Research Achievements

社会基盤施設の維持管理を的確に行うためには,最小のセンサで対象社会基盤施設の健全性を精度よく把握する必要がある,また供用中の橋梁でのモニタリングが望ましいが,供用中の橋梁から得られる計測データには橋梁の物理特性に様々な要因によるノイズが混入される.例えば,供用中の橋梁の振動特性(振動数,減衰,振動形状など)をモニタリング指標とする場合,温度や通行車両の変動によってもモニタリング指標が変動することが予想され,いかに精度よく損傷による変動と区別するかが重要である.本研究では,様々な外部因子に影響される計測データから橋梁の異常に関わる意思決定の精度向上のために「ノイズを含む多変量モニタリングデータに適合するコピュラモデルの提案」と「意思決定にかかわる枠組の提案」を目標としている.
前年度の約9年分の長期橋梁モニタリングデータの分析と最適コピュラモデルの検討結果を踏まえて,長期橋梁モニタリングデータに対する提案コピュラ指標による異常検知を行った.提案コピュラ指標の有効性については,マハラノビス距離やベイズ因子による検知結果と比較検討を行った.さらに長期モニタリングにおける気温のような季節変動要因を考慮した異常検知を行うための,ベイズアップデート法の提案とARIMA-Copulaモデルの提案に成功している.その成果をまとめて,Smart Structures and Systemsに投稿し採択されている.ベイズアップデート法の成果は,Structures and Infrastructure Engineeringに投稿し採択されている.また,ARIMA-Copulaモデルについては,専門雑誌に投稿準備を行なっている.

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (12 results)

All 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 5 results,  Acknowledgement Compliant: 2 results) Presentation (5 results) (of which Int'l Joint Research: 5 results) Remarks (1 results)

  • [Int'l Joint Research] Nanyang Technological University(Singapore)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Long-term bridge health monitoring and performance assessment based on a Bayesian approach2018

    • Author(s)
      Chul-Woo Kim, Yi Zhang, Ziran Wang, Yoshinobu Oshima and Tomoaki Morita
    • Journal Title

      Structures and Infrastructure Engineering

      Volume: 印刷中 Issue: 7 Pages: 883-894

    • DOI

      10.1080/15732479.2018.1436572

    • NAID

      120006537086

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modeling multivariate ocean data using asymmetric copulas2018

    • Author(s)
      Yi Zhang, Chul-Woo Kim, Michael Beer and Huliang Dai and Carlos Guedes Soares
    • Journal Title

      Coastal Engineering

      Volume: 135 Pages: 91-111

    • DOI

      10.1016/j.coastaleng.2018.01.008

    • NAID

      120006542006

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Long-term health monitoring for deteriorated bridge structures based on Copula theory2018

    • Author(s)
      Yi Zhang, Chul Woo Kim, Kong Fah Tee, Akhil Garg, Ankit Garg
    • Journal Title

      Smart Structures and Systems

      Volume: 21 Pages: 171-185

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Maintenance Management of Offshore Structures with Stochastic Markovian Models2017

    • Author(s)
      Y. Zhang, C.W. Kim, K.F. Tee
    • Journal Title

      Structural Infrastructure Engineering

      Volume: 印刷中 Issue: 8 Pages: 1068-1080

    • DOI

      10.1080/15732479.2016.1236393

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Optimal Sustainable Life Cycle Maintenance Strategies for Port Infrastructures2017

    • Author(s)
      Yi Zhang, Chul-Woo Kim, Kong Fah Tee, Jasmine Siu Lee Lam
    • Journal Title

      Journal of Cleaner Production

      Volume: 142 Pages: 1693-1709

    • DOI

      10.1016/j.jclepro.2016.11.120

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Use of copula theory in the long-term health monitoring for deteriorated bridges2017

    • Author(s)
      Y. Zhang and C.W. Kim
    • Organizer
      the 12th International Conference on Structural Safety and Reliability (ICOSSAR2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimal Maintenance Strategies for Developing Sustainable Port Infrastructures2017

    • Author(s)
      Y. Zhang and C.W. Kim
    • Organizer
      IAME2017, the Annual Conference of the International Association of Maritime Economists
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Bridge condition assessment from long-term monitoring by means of Bayesian hypothesis test2016

    • Author(s)
      C.W. Kim, Z. Wang, T. Morita, M. Kawatani, K. Takase
    • Organizer
      The Fifth International Symposium on Life -Cycle Civil Engineering, IALCCE2016
    • Place of Presentation
      TU Delft, The Netherlands
    • Year and Date
      2016-10-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimal Maintenance Strategies of Port Infrastructure Based on Randomized Markovian Models2016

    • Author(s)
      Yi Zhang, Chul-Woo Kim, Jasmine Siu Lee Lam
    • Organizer
      Conference on Logistics and Maritime Studies on One Belt One Road (LMS on OBOR2016)
    • Place of Presentation
      Hong Kong, China
    • Year and Date
      2016-05-10
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimal Maintenance Strategy of Port Infrastructure Based on Randomized Markovian Models2016

    • Author(s)
      Yi Zhang, Chul-Woo Kim, Jasmine Siu Lee Lam
    • Organizer
      Conference on "Logistics and Maritime Studies on One Belt One Road" (LMS on OBOR2016)
    • Place of Presentation
      香港
    • Year and Date
      2016-05-10
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Remarks] Infrastructure Innovation Engineering

    • URL

      http://infra.kuciv.kyoto-u.ac.jp/pub.html

    • Related Report
      2017 Annual Research Report

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Published: 2015-11-26   Modified: 2024-03-26  

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