光纤光栅传感技术在高速铁路轨道状态监测中的应用

Application of Fiber Bragg Grating Sensing Technology to Monitoring of High Speed Railway Track Condition

高速铁路列车运行速度快,行车密度大,对直接承载列车运行的轨道结构有严格的要求。采用光纤光栅传感技术对轨道结构服役状态进行实时在线监测,并根据关键位置可能发生的破坏建立预警应对系统,有助于运营维护部门及时发现轨道结构存在的问题,通过采取相应措施确保线路运营的安全性和平稳性。本文结合目前已在国内运营高铁线路上实施的监测案例,对光纤光栅传感技术应用在高速铁路轨道状态监测中的方法、优点以及存在的问题进行探讨,并提出相应的优化改进措施,为高速铁路轨道状态监测的发展提供实践依据。

High density and speed of trains running on high speed railway require good track state.Fiber Bragg grating sensing technology is used to realize real-time online monitoring of track in service,and warning system is established for precaution of potential damage at critical sections.With identification of problems of track state in time,administers may take effective measures to ensure safety and stability of operation.In this paper,a case study was proposed.The monitoring method,advantages and problems of fiber bragg grating sensing technology applied to high speed railway track condition monitoring were analyzed.The corresponding optimization measures were suggested.