Health status monitoring of bridge cable and telescopic compensation device based on fiber grating sensing array

Chunying Xu; Xinjie Wu; Yu Zhou; Ruixin Liang; Chen Cao; Jiangwang Chen; Xinlong Zheng; Zhifei Lu; Chuliang Wei

doi:10.1063/5.0194678

Health status monitoring of bridge cable and telescopic compensation device based on fiber grating sensing array

Rev Sci Instrum. 2024 Apr 1;95(4):045007. doi: 10.1063/5.0194678.

Authors

Chunying Xu¹, Xinjie Wu¹, Yu Zhou¹, Ruixin Liang¹, Chen Cao², Jiangwang Chen², Xinlong Zheng³, Zhifei Lu³, Chuliang Wei¹

Affiliations

¹ College of Engineering, Shantou University, Shantou 515013, Guangdong Province, China.
² Ocean College, Zhejiang University, Zhoushan 316021, Zhejiang Province, China.
³ State Grid Zhejiang Electric Power Co., Ltd., Zhoushan Power Supply Company, Zhoushan 316021, Zhejiang Province, China.

PMID: 38629929
DOI: 10.1063/5.0194678

Abstract

Laying power cables along the bridge is a new way of laying submarine cables across the sea. Monitoring the health status of cables and their telescopic compensation devices is necessary. In this study, fiber grating sensing technology was used to monitor the strain, temperature, and vibration of the bridge cable of the Zhoushan-Daishan Bridge in Zhoushan, Zhejiang Province, and its compensation device. Two typhoons and one invasion event happened during the monitoring period. Temperature signals, strain signals, and time domain and time-frequency domain vibration signals were analyzed. The results showed that no fire hazards or risk of external damage were found with the bridge cable, and the monitoring system filled a gap in the in situ monitoring of the bridge cable in the Zhoushan-Daishan Bridge by the State Grid.