用于铁路基础设施综合监测的分布式光纤传感器

Distributed Fiber Optic Sensors for Comprehensive Monitoring of Railway Infrastructure

基于京沪铁路天津段工程,选取60 m铁路轨道以及轨道附近拱桥,通过基于受激布里渊散射原理的分布式光纤传感器,对铁路基础设施及拱桥进行静态和动态测量,实施健康监测,解决人工监测带来的主观性强、周期长以及实时性差等缺陷。结果表明,通过对仪表扇区列车运行情况的监测,能检测出轨道及拱桥潜在的结构缺陷,为施工提供基础数据。

Based on the Tianjin section of the Beijing-Shanghai Railway,a 60-meter railway track and an arch bridge near the track are selected,and the distributed optical fiber sensor based on the principle of stimulated Brillouin scattering is used to perform static and dynamic measurements on the railway infrastructure and arch bridges to implement health monitoring and solve the problem.Manual monitoring brings disadvantages such as strong subjectivity,long cycle and poor real-time performance.The results show that the potential structural defects of the track and the arch bridge can be detected by monitoring the operation of the trains in the instrument sector,and the basic data can be provided for the construction.