METHOD FOR ESTIMATING DAMAGE OF BRIDGE COLUMN BY MONITORING VIBRATION DATA AT THE TIME OF EARTHQUAKES

• SUZUKI Takanobu

  東洋大学 理工学部都市環境デザイン学科

Bibliographic Information

Other Title

• 地震時の振動特性変化から橋脚の損傷度を評価する方法

Abstract

 This report presents method for detecting damage of bridge column using vibration data. In condition of knowing both input and output of the structure's motion, change of characteristics of vibration can be analyzed. First it is reported that hysteresis of vibration data by experiment can give simple result for damage detection. Next it is shown that plastic ratio of response is better index of damage by using non-linear dynamic analysis results. Furthermore it is explained that dynamic inclinometer is effective in order to estimate relative displacement. Using this, damage of bridge column can be estimated by single observation point on column top.

Journal

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

  Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 73 (4), I_922-I_931, 2017

  Japan Society of Civil Engineers

Keywords

• detection of damage
• vibration data
• bridge column
• non-linear dynamic analysis

Details

• CRID: 1390001205350939264
• NII Article ID: 130006088743
• DOI: 10.2208/jscejseee.73.i_922
• ISSN: 21854653
• Web Site: https://www.jstage.jst.go.jp/article/jscejseee/73/4/73_I_922/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed