Research on Health Monitoring of Frame Shear Wall Structures Based on Wavelet Packet Transform

LIU Yang; LIU Chong; WANG Lixia

doi:10.13204/j.gyjzG22071916

Volume 52 Issue 10

Oct. 2022

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LIU Yang, LIU Chong, WANG Lixia. Research on Health Monitoring of Frame Shear Wall Structures Based on Wavelet Packet Transform[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(10): 211-218. doi: 10.13204/j.gyjzG22071916

Citation:

LIU Yang, LIU Chong, WANG Lixia. Research on Health Monitoring of Frame Shear Wall Structures Based on Wavelet Packet Transform[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(10): 211-218. doi: 10.13204/j.gyjzG22071916

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Research on Health Monitoring of Frame Shear Wall Structures Based on Wavelet Packet Transform

doi: 10.13204/j.gyjzG22071916

LIU Yang^1,2,
LIU Chong^{1,2
,
,},
WANG Lixia³

1. CCCC First Harbor Engineering Co., Ltd., Tianjin 300450, China;
2. CCCC First Harbor Engineering Co., Ltd. Branch Fourth, Nanchang 330000, China;
3. Tianjin Chengjian University, Tianjin 300380, China

Received Date: 2022-07-19
Available Online: 2023-03-22

Abstract

Abstract

To discover the damages to load-bearing wall structures caused by property owners' unauthorized reconstruction in residential buildings in a timely manner, this paper proposed a health monitoring method based on wavelet packet transform for building structures. The finite-element software ANSYS was used to build a calculation model for frame shear wall structures. Various damage conditions were simulated, and the acceleration responses at the measuring points on the structure were calculated. Furthermore, the software MATLAB was employed for the wavelet packet transform of the response signals at the measuring points and the calculation of the wavelet packet energy. Finally, the damage index DDE (curvature of the standard deviation of wavelet packet energy) was used for damage identification. The results show that the damage identification method combining wavelet packet energy and transform with damage index DDE can effectively monitor the damages to frame shear wall structures. The method can obtain damage monitoring results timely when a load-bearing wall structure is damaged, and better prevention and control effects can be achieved when the method is supported by early warning and alarm equipment.
- shear wall,
- health monitoring,
- wavelet packet,
- wavelet packet energy,
- finite element

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References(23)

References

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