Abstract
The fiber Bragg grating (FBG) sensing technology was used to monitor the situation of a crevice of the continuous beam joint and rails near rail expansion devices on a viaduct of the urban railway. The monitoring items consisted of the rail temperature, rail displacement, viaduct beam displacement, and strain of sliding rail in the rail expansion device section. The strain sensor was a prefabricate FBG strain gauge, the displacement sensor with different scales used an FBG stress ring, and the FBG of the temperature sensor was pre-drawn and fixed in a metal tube. Compensation sensors were used to balance environmental temperature changes. All FBGs were suspended adhered, therefore the chirped phenomenon of the FBG reflection peak was avoided, and the measurement accuracy was improved. The monitoring results matched to the manual test and theoretical estimation.
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C. Tian, M. Yin, and P. Wang, “Some thoughts about the continuous welded rail using rail expansion device,” Railway Engineering, 2006, 2006(2): 59–65.
D. Jiang and W. He, “Review of application for FBG sensors,” Optoelectronics & Lasers, 2002, 1(4): 420–426.
X. Zhou, L. Liang, and D. Jiang, “Research of strain transferring rules for stickup FBG sensors,” Sensors World, 2007 (7), 14–18.
W. Li, Y. Zhang, Q. Wang, J. Pan, J. Liu, and C. Zhou, “Displacement monitor with FBG deforming ring and its application in high speed railway,” in Proc. SPIE, vol. 8421, pp. 8421AU-1–8421AU-4, 2012.
Standard of former China Ministry of Railway, “Calculation of long welding seamless rail creeping displacement on railway bridge,” 2003: 7.
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Li, W., Pang, J., Lu, X. et al. Rail expansion devices monitored by FBG sensors on an urban railway viaduct. Photonic Sens 4, 173–179 (2014). https://doi.org/10.1007/s13320-014-0163-6
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DOI: https://doi.org/10.1007/s13320-014-0163-6