A NEW METHOD OF DAMAGE IDENTIFICATION IN STRUCTURE BASED ON DAMAGE FLEXIBILITY CURVATURE MATRIX

Peng Nian; Zhang Yongxing; Chen Jiangong

doi:10.13204/j.gyjz201308003

Volume 43 Issue 8

Dec. 2014

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Peng Nian, Zhang Yongxing, Chen Jiangong. A NEW METHOD OF DAMAGE IDENTIFICATION IN STRUCTURE BASED ON DAMAGE FLEXIBILITY CURVATURE MATRIX[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 15-18. doi: 10.13204/j.gyjz201308003

Citation:

Peng Nian, Zhang Yongxing, Chen Jiangong. A NEW METHOD OF DAMAGE IDENTIFICATION IN STRUCTURE BASED ON DAMAGE FLEXIBILITY CURVATURE MATRIX[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 15-18. doi: 10.13204/j.gyjz201308003

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A NEW METHOD OF DAMAGE IDENTIFICATION IN STRUCTURE BASED ON DAMAGE FLEXIBILITY CURVATURE MATRIX

doi: 10.13204/j.gyjz201308003

1.
1. School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;
2.
2. College of Civil Engineering,Chongqing University,Chongqing 400045,China

Received Date: 2012-06-12
Publish Date: 2013-08-20

Abstract

Abstract

A few damage evaluation indicators based on modal flexibility matrix.These indicators, such as the change in modal flexibility, the rate in modal flexibility and the change in the modal flexibility curvature, were valid to some extent.However, these indicators need the flexibility matrix before and after damaging, were restricted to some extent in practical projects.In this paper, a new damage indicator was proposed based on damage flexibility curvature, which does not need the structure information before damaging.Two simulations, a simple beam and a two-span continuous beam, are utilized to verify the new indicator.Through the simulation results indicate that the damage location in structures, with single damage, multiple ones and slighter ones, can be detected efficiently.The value of the indicator is increased with the damage severity, the damage severity can be qualitatively detected.Anti-noise performance of the new damage indicator is better.
- damage identification,
- flexibility curvature matrix,
- damage index,
- numerical simulation

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References(13)

References

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