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Open AccessArticle

Ground-Based Radar Interferometry for Monitoring the Dynamic Performance of a Multitrack Steel Truss High-Speed Railway Bridge

1
School of Earth Sciences and Engineering, Hohai University, JiangNing District, Nanjing 211100, China
2
School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China
3
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Geomatics Division, 08000 Castelldefels, Spain
4
Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University, Nanjing 210096, China
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(16), 2594; https://doi.org/10.3390/rs12162594
Received: 10 July 2020 / Revised: 6 August 2020 / Accepted: 8 August 2020 / Published: 12 August 2020
(This article belongs to the Special Issue Infrastructure Monitoring Using Synthetic Aperture Radar)
With the continuous expansion of the high-speed railway network in China, long-span railway bridges carrying multiple tracks demand reliable and fast testing procedures and techniques. Bridge dynamic behavior analysis is a critical process in ensuring safe operation of structures. In this study, we present some experimental results of the vibration monitoring of a four-track high-speed railway bridge with a metro–track on each side: the Nanjing–Dashengguan high-speed railway bridge (NDHRB). The results were obtained using a terrestrial microwave radar interferometer named IBIS-S. The radar measurements were interpreted with the support of lidar point clouds. The results of the bridge dynamic response under different loading conditions, including high-speed trains, metro and wind were compared with the existing bridge structure health monitoring (SHM) system, underlining the high spatial (0.5 m) and temporal resolutions (50 Hz–200 Hz) of this technique for railway bridge dynamic monitoring. The detailed results can help engineers capturing the maximum train-induced bridge displacement. The bridge was also monitored by the radar from a lateral position with respect to the bridge longitudinal direction. This allowed us to have a more exhaustive description of the bridge dynamic behavior. The different effects induced by the passage of trains through different tracks and directions were distinguished. In addition, the space deformation map of the wide bridge deck under the eccentric load of trains, especially along the lateral direction (30 m), can help evaluating the running stability of high-speed trains. View Full-Text
Keywords: multitrack railway bridge; dynamics; displacements; microwave radar interferometer multitrack railway bridge; dynamics; displacements; microwave radar interferometer
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MDPI and ACS Style

Huang, Q.; Wang, Y.; Luzi, G.; Crosetto, M.; Monserrat, O.; Jiang, J.; Zhao, H.; Ding, Y. Ground-Based Radar Interferometry for Monitoring the Dynamic Performance of a Multitrack Steel Truss High-Speed Railway Bridge. Remote Sens. 2020, 12, 2594. https://doi.org/10.3390/rs12162594

AMA Style

Huang Q, Wang Y, Luzi G, Crosetto M, Monserrat O, Jiang J, Zhao H, Ding Y. Ground-Based Radar Interferometry for Monitoring the Dynamic Performance of a Multitrack Steel Truss High-Speed Railway Bridge. Remote Sensing. 2020; 12(16):2594. https://doi.org/10.3390/rs12162594

Chicago/Turabian Style

Huang, Qihuan; Wang, Yian; Luzi, Guido; Crosetto, Michele; Monserrat, Oriol; Jiang, Jianfeng; Zhao, Hanwei; Ding, Youliang. 2020. "Ground-Based Radar Interferometry for Monitoring the Dynamic Performance of a Multitrack Steel Truss High-Speed Railway Bridge" Remote Sens. 12, no. 16: 2594. https://doi.org/10.3390/rs12162594

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