Accuracy improvement of damping-change identification for structural health monitoring based on ambient vibration measurement

2011 Fiscal Year Final Research Report

• Project/Area Number: 21656113
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Saitama University
• Principal Investigator: YAMAGUC Hihiroki 埼玉大学, 大学院・理工学研究科, 教授 (50134474)
• Co-Investigator(Kenkyū-buntansha): MATSUMOTO Yasunao 埼玉大学, 大学院・理工学研究科, 准教授 (90322023)
• Project Period (FY): 2009 – 2011
• Keywords: 維持管理工学 / 構造健全度 / 供用時微動計測 / モード減衰同定 / ERA / wavelet変換 / エネルギー的減衰評価

Research Abstract

The ambient vibration measurements of steel truss bridge and steel Langer bridge were conducted to study a possibility of minimizing the number of sensors as well as to have highly accurate database of bridges' ambient vibration data. The energy-based damping analysis with the two-step model updating was also conducted for the data of Langer bridge, and it was concluded that the proposed method can improve the accuracy of damping identification for structural health monitoring.

Research Products

• [Journal Article] 常時微動計測に基づく鋼橋の減衰同定とエネルギー的減衰評価法の適用,土木学会 (2011)
  • Author(s): 河原井耕介, 山口宏樹, 松本泰尚, 吉岡勉
  • Journal Title: 橋梁振動コロキウム2011論文集 Pages: 114-121
• [Journal Article] 鋼トラス橋の斜材振動連成とモード減衰変化を利用した構造健全度評価 (2010)
  • Author(s): 吉岡勉, 伊藤信, 山口宏樹, 松本泰尚
  • Journal Title: 土木学会論文集A Volume: Vol.66, No.3 Pages: 516-534
  • Peer Reviewed
• [Journal Article] Structural health monitoring of steel truss bridges based on modal damping changes in local and global modes (2010)
  • Author(s): Yoshioka T., Yamaguchi H., Matsumoto Y.
  • Journal Title: Proc. of 5th World Conf. on Structural Control and Monitoring, MAA Volume: No.167
  • Peer Reviewed
• [Presentation] Relation between changes in the modal properties and structural changes in an existing steel truss bridge (2012)
  • Author(s): Matsumoto Y., Yamaguchi H., Yoshioka T.
  • Organizer: Int. Symposium on Advances in Civil and Environmental Engineering (Keynote Paper)
  • Place of Presentation: University of Ruhuna, (Sri Lanka)
  • Year and Date: 2012-03-19
• [Presentation] 鋼ランガー橋における振動計測を利用した損傷同定の基礎的研究 (2011)
  • Author(s): 佐藤達也, 河原井耕介, 山口宏樹, 松本泰尚, 高橋眞, 吉岡勉
  • Organizer: 土木学会第66回年次学術講演会
  • Place of Presentation: 愛媛(愛媛大学)
  • Year and Date: 20110907-09
• [Presentation] Damage assessment of truss diagonal members based on frequency changes in local higher modes (2011)
  • Author(s): Yoshioka T., Takahashi M., Yamaguchi H., Matsumoto Y.
  • Organizer: The 12th EASEC
  • Place of Presentation: Hong Kong (China)
  • Year and Date: 20110126-28
• [Presentation] 打撃試験によるトラス斜材の振動数変化の検出とFEM解析による分析 (2010)
  • Author(s): 吉岡勉, 山口宏樹, 高橋眞, 松本泰尚
  • Organizer: 土木学会第65回年次学術講演会
  • Place of Presentation: 札幌(北海道大学)
  • Year and Date: 20100901-03
• [Presentation] A field investigation of vibration-based structural health monitoring in a steel truss bridge (2010)
  • Author(s): Matsumoto Y., Yamaguchi H., Yoshioka T.
  • Organizer: IABSE-JSCE JC on Advances in Bridge Eng
  • Place of Presentation: Dhaka (Bangladesh)
  • Year and Date: 20100808-10
• [Presentation] 鋼トラス橋の斜材連成振動とモード減衰変化に基づく構造健全度評価 (2009)
  • Author(s): 伊藤信, 吉岡勉, 山口宏樹, 松本泰尚
  • Organizer: 土木学会第64回年次学術講演会
  • Place of Presentation: 福岡(福岡大学)
  • Year and Date: 20090902-04
• [Presentation] 大型多導体送電線の風による異常振動の解析 (2009)
  • Author(s): 熊谷啓, Gull Jawad Hussan, 山口宏樹, 福岡崇, 磯崎正則
  • Organizer: 土木学会第64回年次学術講演会
  • Place of Presentation: 福岡(福岡大学)
  • Year and Date: 20090902-04
• [Remarks] アウトリーチ活動山口宏樹:橋をゆらす?ゆれで橋の健康診断,キッズ・ユニバーシティ・さいたま,埼玉大学,2011年12月28日(さいたま市教育委員会との連携により,市在住の小学校5・6年生200人に対して,知的好奇心を刺激し学問への憧れを抱く学びの機会を提供することを目的として実施された)