客运专线小半径曲线地段平面设计参数确定相关问题探讨

Relevant Problems to Plane Design Parameters Determination in Small Radius Curve Section of Passenger Dedicated Railway

就铁道部颁发的三部设计规范中对过、欠超高设置的不同规定进行了论述,并针对超高设置对缓和曲线确定的影响进行了分析。着重分别对客运专线小半径曲线地段有砟轨道及无砟轨道超高设置及缓和曲线设计参数的确定进行了探讨。文中所拟定的不同曲线半径超高参数及缓和曲线长度,可供其它客运专线项目参考。

This paper discusses the different provisions for surplus and inadequate superelevation settings in three design codes issued by the Ministry of Railways, analyzes the influences of superelevation setting on transition curve determina- tion, focuses attention on the superelevation setting of ballast and ballastless tracks and design parameters determination of transition curve in small radius curve section of passenger dedicated railway separately. The superelevation parameters of different curve radius and length of transition curve proposed in this paper can give a reference to other passenger dedicated railway projects.