不同轨道不平顺激励下线形关键点处列车走行性分析
Analysis of Train Running Performance at Key Points of Track Geometry Under Different Track Irregularity Excitations
李帅 1李向国 1王凯 1戴汀1
作者信息
- 1. 石家庄铁道大学 道路与铁道工程安全保障省部共建教育部重点实验室,河北 石家庄 050043;石家庄铁道大学 土木工程学院,河北 石家庄 050043
- 折叠
摘要
为探究不同轨道不平顺激励下,列车以更高速度经过缓圆点(HY)、曲中点(QZ)和圆缓点(YH)时,曲线超高、平面圆曲线半径及缓和曲线长度与列车速度之间的匹配关系,以中国某高速动车组为原型,建立了具有 50 个自由度的车-线动力学分析模型.研究结果表明,中国无砟轨道谱和德国低干扰谱对于列车在道路线形关键点处的动力响应随列车行驶速度和平面线形参数变化的趋势大致相同,但各关键点之间的响应程度不同;超高和圆曲线半径的变化对于列车动力响应的影响程度较缓和曲线长度大.研究结果可为高铁列车更高速度运行时的线路设计及线路平面参数之间的匹配关系提供一定的理论参考.
Abstract
To explore the relationship between curve superelevation,horizontal curve radius,and transition curve length with train speed when the train passes through the horizontal curve point(HY),the middle of the curve(QZ),and the curve transition point(YH)under different track irregularities,a dynamic analysis model with 50 degrees of freedom was established based on a Chinese high-speed train-set prototype.The study results indicate that the dynamic response trends of the train at key points on the track alignment,with respect to variations in train speed and planar alignment parameters,are gen-erally similar to the Chinese ballastless track spectrum and the German low-disturbance spectrum.However,the degree of response varies among these key points.The changes in superelevation and curve radius have a more moderate impact on the dynamic response of the train compared to the substan-tial effect of transition curve length.The findings of this study can provide theoretical references for the design of high-speed train routes and the matching relationships between route planar parameters when operating at higher speeds.
关键词
高速铁路/轨道不平顺谱/线路关键点/线路平面参数/动力学仿真Key words
high-speed railway/track irregularity spectrum/key points on the route/route plan parameters/dynamic simulation引用本文复制引用
基金项目
国家自然科学基金面上项目(52378453)
出版年
2024
NETL
NSTL
万方数据