基于光纤光栅的钢轨受力状态监测技术研究  

Research on technology of rail stress status monitoring based on fiber grating

作　　者：孙高盼 闫连山[1] 邵理阳[1] 廖俊[1] 王平[2] 

机构地区：[1]西南交通大学信息科学与技术学院,四川成都610031 [2]西南交通大学土木工程学院,四川成都610031

出　　处：《传感器与微系统》2016年第1期69-71,共3页Transducer and Microsystem Technologies

基　　金：科技部国际合作专项项目(2014DFA11170);教育部重大项目(313049);四川省科技支撑重大项目(2011GZ0239)

摘　　要：钢轨状态监测对列车的安全运营具有重要意义。基于光纤光栅传感技术,采用钢轨三维梁模型对轴向应变、竖向和横向曲率进行测量。与传统一维测量模型相比,该方法可以同时测量钢轨竖、横向曲率和轴向力。通过实验室静态轴向加载试验对比了一维和三维模型,验证了三维模型的有效性与优势。Rail stress status monitoring is of great importance for operation safety of train. A three-dimensional beam model for rail based on fiber Bragg grating sensing technology is used to measure axial strain, vertical and transverse curvature of rail. Compared with traditional 1D measurement model, experimental results of both conventional one-dimensional and three-dimensional models indicate that the three-dimensional one can measure both the axial strain and the vertical/transverse curvature.

关 键 词：钢轨 应变 弯矩 三维梁模型 光纤光栅传感器 受力状态监测 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]