Small Damage High-Precision Identification of Serving Structural Pile

ZHANG Xiao-zhong; YAO Wen-juan

Journal of Beijing University of Technology > 2013 > 39(10): 1499-1504.

ZHANG Xiao-zhong, YAO Wen-juan. Small Damage High-Precision Identification of Serving Structural Pile[J]. Journal of Beijing University of Technology, 2013, 39(10): 1499-1504.

Citation:

ZHANG Xiao-zhong, YAO Wen-juan. Small Damage High-Precision Identification of Serving Structural Pile[J]. Journal of Beijing University of Technology, 2013, 39(10): 1499-1504.

Citation:

ZHANG Xiao-zhong, YAO Wen-juan. Small Damage High-Precision Identification of Serving Structural Pile[J]. Journal of Beijing University of Technology, 2013, 39(10): 1499-1504.

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Small Damage High-Precision Identification of Serving Structural Pile

ZHANG Xiao-zhong^1,2,
YAO Wen-juan¹

1. College of Architecture and Civil Engineering, Quzhou University, Quzhou 324000, Zhejiang, China;
2. Department of Civil Engineering, Shanghai University, Shanghai 200072, China

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Received Date: October 22, 2012
Available Online: November 02, 2022

Graphical Abstract

Abstract

Abstract

In order to identify the small damage of serving structural pile in high prelision, according to the structural vibration equation of damaged pile, a structural damage identification equation was established which contained modal damage sensitivity factor, the element damage factor and element modal strain energy.Efficient damage identification modals were selected by applying modal damage sensitivity factor.Accurate damage location identification method was established for pile small damage by using efficient damage identification modals and wavelet analysis techniques.On the basis of the damage location identification, the injury severity could be identified by using structural damage identification equation.Numerical simulation of the SF-1 lighthouse pile foundation damage identification was done by applying the proposed method, the result of errors of identification were less than 5% which verified that the proposed method had higher recognition accuracy.The pile foundation damage in the BHX-12 platform was detected by applying the proposed method, the consistent of identification result and actual result proved the practicality of the method.
- pile small damage,
- damage identification,
- efficient modal,
- element modal strain energy,
- wavelet transform

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References (15)

References

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