STRUCTURAL DAMAGE ALARMING FOR ANCIENT WOOD FRAME STRUCTURE BASED ON WAVELET PACKET ENERGY SPECTRUM

Wang Xin; Hu Weibing; Han Guangsen

doi:10.13204/j.gyjz201308005

Volume 43 Issue 8

Dec. 2014

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Wang Xin, Hu Weibing, Han Guangsen. STRUCTURAL DAMAGE ALARMING FOR ANCIENT WOOD FRAME STRUCTURE BASED ON WAVELET PACKET ENERGY SPECTRUM[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 24-28. doi: 10.13204/j.gyjz201308005

Citation:

Wang Xin, Hu Weibing, Han Guangsen. STRUCTURAL DAMAGE ALARMING FOR ANCIENT WOOD FRAME STRUCTURE BASED ON WAVELET PACKET ENERGY SPECTRUM[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(8): 24-28. doi: 10.13204/j.gyjz201308005

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STRUCTURAL DAMAGE ALARMING FOR ANCIENT WOOD FRAME STRUCTURE BASED ON WAVELET PACKET ENERGY SPECTRUM

doi: 10.13204/j.gyjz201308005

1.
School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China

Received Date: 2013-04-11
Publish Date: 2013-08-20

Abstract

Abstract

The structural performance degradation and the size and location of damage are determined by structural vibration test and wavelet packet energy spectrum, which can be used for the early damage warning of large ancient wood frame architectures.The acceleration signal of dynamic response is obtained by finite element simulation, the change of signal energy spectrum is obtained to evaluate the structural damage state.It is concluded that the structural natural frequencies are not sensitive to the plane ancient wood frame structure, it is difficult to determine the damage location.With the increase of damage degree, the change of signal energy spectrum increases, which can describe the structural damage state qualitatively and quantitatively.The variation of wavelet sub-signal energy spectrum is related to the location of damage, it is shown that the damage degree is most sensitive to the joint of mortise and tenon, secondly in the midspan of beam, finally in the bottom of column.
- ancient wood frame structure,
- finite element,
- wavelet packet energy spectrum,
- damage alarming

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References(14)

References

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