Railway Slope Monitoring Based on Dual-Parameter FBG Sensor  

作　　者：Hongbin XU Weiwei WANG Feng LI Yanliang DU Hongliang TU Chuanrui GUO 

机构地区：[1]College of Civil and Transportation Engineering,Shenzhen University,Shenzhen 518060,China [2]National Key Laboratory of Green and Long-Life Road Engineering in Extreme Environment,Shenzhen University,Shenzhen 518060,China [3]School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China [4]Institute of Urban Smart Transportation&Safety Maintenance,Shenzhen University,Shenzhen 518060,China [5]State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,ChineseAcademy of Sciences,Wuhan 430071,China

出　　处：《Photonic Sensors》2025年第1期47-60,共14页光子传感器(英文版)

基　　金：supported in part by the National Key Research and Development Program of China(Grant No.2021YFB2600800);National Natural Science Foundation of China(Grant No.52378309);Shenzhen Science and Technology Program(Grant Nos.JCYJ20220818095608018 and KQTD20180412181337494);China Postdoctoral Science Foundation(Grant Nos.2022M722188,2022TQ0218,and 2022M722187);Natural Science Foundation of Hebei Province(Grant No.E2021210032);Visiting Researcher Fund Program of State Key Laboratory of Water Resources Engineering and Management(Grant No.2022SGG05);Tianjin Key Laboratory of Rail Transit Navigation Positioning and Spatio-temporal Big Data Technology(Grant No.TKL2024B10).

摘　　要：A large number of slopes appear along the line during railway construction,which will pose a threat to railway safety operation.Slope monitoring plays an important role in ensuring the safety of railway operation.Aiming at the difficulties of sensor multiplexing,low accuracy,and large disturbance by trains,this paper proposes a railway slope monitoring method based on integrated fusion detection of inclination and vibration.Instability and failure characteristics of the K3 slope in Shuohuang Railway and dynamic characteristics under the excitation of the train load are analyzed by the finite element method(FEM)analysis.Based on the above analysis,a slope monitoring system is established utilizing the self-developed dual-parameter fiber Bragg grating(FBG)sensor.The monitoring data of the past four years show that the slope is in a relatively stable state at present.The monitoring data are consistent with the results of the FEM.The feasibility of the damage identification method based on inclination and vibration characteristics is verified,which provides a new method for railway slope monitoring.

关 键 词：Fiber Bragg grating railway slope MONITORING INCLINATION VIBRATION 

分 类 号：U216.4[交通运输工程—道路与铁道工程]