无砟轨道对轨道电路传输特性的影响分析  

Analysis of the Influence of Ballastless Track on Transmission Performance of Track Circuits

作　　者：田铭兴[1] 陈永刚[1] 史宏章[2] 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070 [2]兰州铁路局武威工务段,甘肃武威733000

出　　处：《兰州交通大学学报》2010年第3期83-85,共3页Journal of Lanzhou Jiaotong University

基　　金：甘肃省自然科学基金(2008GS02623)

摘　　要：定量分析了轨道电路固有衰耗和轨道电路一次参数之间的关系,推导出了轨道电路固有衰耗的计算公式,并利用这些公式分析了无砟轨道对轨道电路固有衰耗的影响.研究表明:轨道电路的最小固有衰耗值随着钢轨电阻的增加而增加;和有砟轨道相比,无砟轨道电路的最优补偿电容减小了,而最小固有衰耗却增加了;改变无砟轨道的结构设计是改善无砟轨道电路传输特性的根本措施.The quantitative relation between the inherent attenuation and prime parameters of a track circuit is analyzed and formulae for calculating the inherent attenuation of a track circuit are derived.And based on these formulae,the influence of ballastless track on transmission performance of track circuits is analyzed.Accordingly,it is pointed out that the minimum inherent attenuation of a track circuit increases with increase of the rail resistance;compared to a ballasted track circuit,the optimum compensation capacitance of a ballastless track circuit has reduced while the minimum inherent attenuation has increased,and fundamental measures to improve transmission performance of ballastless track circuits is to change the structure design.

关 键 词：无砟轨道 轨道电路 传输特性 

分 类 号：U284.22[交通运输工程—交通信息工程及控制]