无砟轨道电路传输距离分析  

Analysis for Transmission Distance of Ballastless Track Circuit

作　　者：齐东[1] 米根锁[1] 马涛[1] 

机构地区：[1]兰州交通大学自动化电气工程学院,兰州730070

出　　处：《科学技术与工程》2012年第33期9105-9109,共5页Science Technology and Engineering

摘　　要：在实际应用中无砟轨道电路凭借其高稳定性、强耐久性、寿命周期长等特点成为了目前国际上轨道电路发展的一个重要趋势。但是无砟条件下钢筋混合网的交叉接触,产生电磁涡流,影响了轨道电路信号的传输距离。根据无砟轨道电路特有的钢筋网络结构,并结合秦沈客运专线的实际数据,验证模型的真确性。然后对无砟条件下的传输长度进行定量分析。结果表明在30 cm范围内,为了使得传输距离增加,可以适当地增加钢轨和钢筋网络之间的高度。而且针对频率对轨道电路的影响做了分析,由于降低频率会使得轨道电路抗干扰能力下降,同时会引起接收端和发送端性能的变化。因此降低频率的方法在目前的条件下并不可行。Ballastless track circuit by virtue of it＇ s high stability, strong durability, long service life characteristics is become an important trend in the international track circuit in practical applications. However, the hybrid network of cross-contact is reinforced, resulting in electromagnetic eddy current, affecting the transmission distance of the track circuit signal in the condition of ballastless. According to the ballastless track circuit-specific reinforced the network structure and take the actual date of qin-shen passenger dedicated line into account inorder to quantitative analysis the length in the condition of ballastless. Results show that in order to make the transmission distance increasesed, can. be appropriate increase in the height between the rail and reinforced network in 30 cm range. At the same time a analysis with frequency of track circuit is maken, because lower frequency will make the track circuit anti-jamming capability reduced and it will cause changes in the receiver and transmitter performance. So it is not feasible to reduce the frequency of track circuit.

关 键 词：无砟轨道 数学模型 轨道电路 仿真分析 

分 类 号：U221[交通运输工程—道路与铁道工程]