• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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  • Chinese Science Citation Database
Volume 12 Issue 2
Mar.  2010
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Article Contents
Gao Fangqing, Wang Fengqin. Damage Detection of Steel Truss Bridgefrom Changes in Modes of Vibration[J]. Journal of Southwest Jiaotong University, 1999, 12(2): 158-162.
Citation: Gao Fangqing, Wang Fengqin. Damage Detection of Steel Truss Bridge from Changes in Modes of Vibration[J]. Journal of Southwest Jiaotong University, 1999, 12(2): 158-162.

Damage Detection of Steel Truss Bridge from Changes in Modes of Vibration

  • Publish Date: 25 Apr 1999
  • The damage in a steel truss model bridge is simulated by changing its element stiffness. The dynamic behaviors of the model bridge are analyzedwithFEMdynamic structural analysis program before and after the model bridge is damaged. It is found that the changes in the mode of vibration are sensitive to the damage degree of elements, and there exists a corresponding relationship between them. A new method for weighting the changes in modes during the structural damage is proposed, inwhich the modes of structural vibration are chosen as weight coefficients. Element damages can be oriented effectivelywith this method.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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