高速行车条件下轨道几何不平顺敏感波长研究  

Study on Sensitive Wavelengths of Track Irregularities in High-speed Operation

作　　者：高建敏[1,2] 翟婉明[1,2] 王开云[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031 [2]西南交通大学高速铁路线路工程教育部重点实验室,四川成都610031

出　　处：《铁道学报》2012年第7期83-88,共6页Journal of the China Railway Society

基　　金：国家科技支撑计划(2009BAG12A01);国家高技术研究发展计划(863计划)(2009AA110302);国家重点基础研究发展计划(973计划)(2007CB714706);国家自然科学基金(50838006);西南交通大学科技发展基金

摘　　要：应用车辆-轨道耦合动力学理论及分析软件TTISIM,研究轨道几何不平顺波长变化对高速车辆系统动力响应影响,探讨高速行车条件下轨道几何不平顺敏感波长问题。结果表明:在250～400km/h行车速度域,高速列车系统动力响应指标随轨道不平顺波长变化存在一个幅值相对较大区间;轨道不平顺类型和行车速度不同,敏感区间对应轨道不平顺波长范围亦不相同。综合对比发现:在250～400km/h行车速度域,轨道高低、方向和水平不平顺在长波段敏感波长范围分别约为80～160m、40～120m和50～160m;在相同行车速度条件下,轨道扭曲不平顺在长波段敏感波长范围约为40～100m。By means of the vehicle-track coupled dynamics theory and the corresponding simulation software TTISIM, the effect of track irregularity wavelength on the dynamic response of the vehicle system was investi- gated. The sensitive wavelength of track irregularity in high-speed operation was discussed. The analysis re- sults show that the dynamic responses of the vehicle system are larger under the condition that the track irregu- larity wavelength varies in a certain range when the running speed is 250km/h to 400km/h. The wavelength ranges of track irregularities corresponding to the larger responses of vehicle system vary with different irregu- larity type or running speed. It is found that the vehicle system dynamic responses are sensitive to track vertical profile irregularity, track alignment irregularity and track cross-level irregularity when their wavelength ranges are 80-160 m, 40-120 m and 50-160 m at the speed of 250 km/h to 400 km/h. The sensitive wavelength range of track twist irregularity is 40-100 m under the above mentioned speed conditions.

关 键 词：高速铁路 轨道不平顺 敏感波长 动力响应 车辆-轨道耦合动力学 

分 类 号：U212.2[交通运输工程—道路与铁道工程]