Damage identification of Chi River bridge based on vehicle excitation and WPEVCR

Autor: Zhuoxi Liang, Zhihua Xiong, Tuotuo Cong, Jingxuan Peng, Gengwang Yan
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Advances in Bridge Engineering, Vol 4, Iss 1, Pp 1-14 (2023)
Druh dokumentu: article
ISSN: 2662-5407
DOI: 10.1186/s43251-023-00098-x
Popis: Abstract In order to identify damage of Chi River bridge’s superstructure, a damage identification indicator is implemented in the field test, which involves the wavelet packet energy analysis with the feature of dynamic response signals caused by vehicle excitation. On the basis of the field test, a series of numeric models with varied service conditions were developed. The wavelet packet analysis method was utilized to decompose the bridge’s acceleration signals at both healthy and damaged status, and the values of Wavelet Packet Energy Variance Change Rate (WPEVCR) were obtained. Then, according to the acceleration signal data measured from the field test, the damage assessment of the condition of Chi River bridge was performed by means of the obtained WPEVCR. The results demonstrate the capability of WPEVCR in localizing and quantifying the bridge damage status. Moreover, another damage indicator based on the Hilbert-Huang Transform (HHT) has been also employed to verify the assessment of WPEVCR, and both damage identification approaches indicate that the Chi River bridge is in a healthy service condition.
Databáze: Directory of Open Access Journals
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