摘要
首先,提出基于AET的无穷积分项求解方法,解决无砟轨道互阻抗参数数值计算中计算复杂度高、用时长的问题;其次,通过与有限元仿真结果相对比,验证求解方法的正确性;最后基于数值计算,以路基无砟轨道为例,分别研究频率、土壤电导率、钢筋和轨道高度等参数对钢轨互感的影响规律。研究结果表明:无砟轨道中钢筋对于互感影响最大为31.81%;高铁无砟线路互感参数测量应按不同频率进行,无砟轨道中轨道电路设计时应考虑适当缩短钢轨上、下行线路的并行长度等。
Firstly, an infinite integral term solution method was proposed based on AET, which is used to solve the problems of high computational complexity and time consumption in the numerical calculation of mutual impedance parameters of ballastless track. Secondly, the correctness of the solution method was verified by comparing with the finite element simulation results. Finally, based on numerical calculation, taking subgrade ballastless track as an example, the influences of parameters such as frequency, soil conductivity, reinforcement and track height on rail mutual inductance were studied respectively. The results show that reinforcement in ballastless track has a maximum effect on mutual inductance of 31.91%. The measurement of mutual inductance parameters of high-speed ballastless track should be carried out at different frequencies. When designing track circuit in ballastless track, appropriately shortening the parallel length of rail up and down lines should be considered.
作者
李智宇
阳晋
邹军
LI Zhiyu;YANG Jin;ZOU Jun(School of Traffic and Transportation,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Beijing National Railway Research&Design Institute of Signal&Communication Co.Ltd.,Beijing 100073,China;National Key Laboratory of Power System and Generation Equipment Control and Simulation,Beijing 100084,China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2022年第11期4580-4588,共9页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(U183420024)。
关键词
轨道电路
无砟轨道
钢筋
互感
数值计算
track circuit
ballastless track
reinforced bar
mutual inductance
numerical calculation
