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17 May 2011 Displacement monitoring of switch track and its slab on a bridge of high speed railway by FBG
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Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775375 (2011) https://doi.org/10.1117/12.886026
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada
Abstract
In a 350km/h high speed railway line, there is a seamless switch with ballastless slabs built on a bridge. 54 Fiber Bragg Grating detecting cells are employed to monitor the displacement of track and slab. The cell is of extending function of measurement range, up to 50mm displacement, and is of good linearity. Protecting methods for cells and fiber are adopted to keep them surviving from the harsh conditions. The results show that in 75 days, the displacement of the track and sleeper slab was 8-9mm, and the displacement is of high correlation with daily environmental temperature change.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Weilai Li, He Li, Jian Cheng, Xiaomei Huang, Jianjun Pan, Ciming Zhou, and Minghong Yang "Displacement monitoring of switch track and its slab on a bridge of high speed railway by FBG", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775375 (17 May 2011); https://doi.org/10.1117/12.886026
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