FBG monitoring on a viaduct of urban railway

Weilai Li; Jin Pang; Xiaoshan Lu; Jie Liu; Ciming Zhou

doi:10.1117/12.2031548

15 October 2013 FBG monitoring on a viaduct of urban railway

Weilai Li, Jin Pang, Xiaoshan Lu, Jie Liu, Ciming Zhou

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 892439 (2013) https://doi.org/10.1117/12.2031548
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

Fiber Bragg Grating (FBG) sensing technology was used to monitor a crevice of continuous beam joint and rails near rail expansion devices on a viaduct. The monitoring items consisted of rail temperature, rail displacement, viaduct beam displacement, and strain of sliding rail of rail expansion device. Strain sensor was a prefabricate FBG strain gauge; displacement sensor with different scale used a FBG stress ring; and the FBG of temperature sensor was pre-drawn and fixed in a metal tube. The monitoring results matched to the manual testing and theoretical estimate.

Citation Download Citation

Weilai Li, Jin Pang, Xiaoshan Lu, Jie Liu, and Ciming Zhou "FBG monitoring on a viaduct of urban railway", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 892439 (15 October 2013); https://doi.org/10.1117/12.2031548

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