RELATIONSHIP BETWEEN DAMAGE AND CHANGE OF DYNAMIC CHARACTERISTICS IN AN EXISTING BRIDGE FOR VIBRATION-BASED STRUCTURAL HEALTH MONITORING

DOI 2 Citations
  • 宮下 剛
    長岡技術科学大学 産学融合トップランナー養成センター
  • 玉田 和也
    舞鶴工業高等専門学校 建設システム工学科
  • 劉 翠平
    長岡技術科学大学 産学融合トップランナー養成センター
  • 岩崎 英徳
    京都府中丹東土木事務所 企画調整室
  • 長井 正嗣
    長岡技術科学大学 環境・建設系

Bibliographic Information

Other Title
  • 振動を利用した健全性診断に向けた実橋梁の損傷と動特性変化

Abstract

 The objective of this study is to understand the relationship between damage and the change of dynamic characteristics in an existing bridge for vibration-based structural health monitoring. Focused bridge is a demolished pedestrian bridge, which is a composite steel girder with two main girders. The first damages are slits by gas cutting, which are given to a lower flange in the lateral direction. Then, outstanding plate in the lower flange is removed along the span. Vibration measurement was carried out in each damage case. As a result, it was confirmed that natural frequencies decreased depending on the progress of damage. Its reduction rate was greater in the modes without torsion. For reproducible analysis, spectral element and finite element analyses were carried out. Analytical results also showed the similar reduction of natural frequencies to measurement.

Journal

Citations (2)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

  • CRID
    1390001205351184640
  • NII Article ID
    130004556730
  • DOI
    10.2208/jscejseee.68.367
  • ISSN
    21854653
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

Report a problem

Back to top