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Proceedings Paper

Displacement monitoring of switch track and its slab on a bridge of high speed railway by FBG
Author(s): Weilai Li; He Li; Jian Cheng; Xiaomei Huang; Jianjun Pan; Ciming Zhou; Minghong Yang
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Paper 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.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775375 (17 May 2011); doi: 10.1117/12.886026
Show Author Affiliations
Weilai Li, Wuhan Univ. of Technology (China)
He Li, Wuhan Univ. of Technology (China)
Jian Cheng, Wuhan Univ. of Technology (China)
Xiaomei Huang, Wuhan Univ. of Technology (China)
Jianjun Pan, Wuhan Univ. of Technology (China)
Ciming Zhou, Wuhan Univ. of Technology (China)
Minghong Yang, Wuhan Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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