Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (4): 50-52,78.

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Bridge Damage Identification via Multi Measurement with a Moving Mass

Li Da-jun1  Huo Da1  Han Qiang2   

  1. 1.College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100022,China;2.College of Traffic and Communications,South China University of Technology,Guangzhou 5 10640, Guangdong,China
  • Received:2004-04-29 Online:2005-04-25 Published:2005-04-25
  • Contact: 李大军(1967-)，男，博士生，主要从事结构诊断与维修加固研究 E-mail:lidajun@emails.bjut.edu.cn
  • About author:李大军(1967-)，男，博士生，主要从事结构诊断与维修加固研究
  • Supported by:

    国家自然科学基金资助项目(50378007)；北京市自然科学基金重点项目(8031001)

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Abstract:

A new damage identification method is proposed for testing bridge structures.In this method,a moving mass is used to measure the structures in different positions.The measured nature frequencies are used as the only index to determ ine other model parameters,thus identifying the damage of the structures.Moreover,the theoretical model of the proposed method is established and the corresponding equations are deduced.A numerical simulation is finally carried out to verify the effectiveness of the proposed method.

Key words: bridge, damage identification, ambient excitation