莫斯科至喀山高速铁路是中国高铁“走出去”的标志性项目之一,其设计速度达到400 km/h,在全世界范围内尚属首次,线路设计中无现成规范可以采用.研究满足400 km/h速度的一重要线路参数—竖曲线半径.采用理论分析、仿真分析及数据对比分析的方法,从安全、舒适及养护维修等方面对竖曲线半径进行研究,并得出结论:最小竖曲线半径取值主要由舒适性条件决定,当速度达到400 km/h,建议最小竖曲线半径取值32 000 m;最大竖曲线半径受养护维修(检测技术)条件影响,建议取值不大于40 000 m.%The High-speed railway from Moscow to Kazan is one of the abroad landmark projects of China High-Speed Railway.For the first time in the world,the speed of the railway reaches 400 km/h,and there is no existing specification to be adopted in the design.This paper studies one of the important line parameters-the vertical curve radius of 400 km/h in terms of security,riding comfort and maintenance based on theoretical analysis,dynamic simulation and contrastive analysis.It is concluded that the data of minimal vertical curve radius is determined by riding comfort.As the speed reaches 400 km/h,the recommended minimal vertical curve radius is 32 000 m,and the recommended maximal vertical curve radius is less than 40 000 m due to maintenance condition (detection technology).
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