客运专线铁路同心圆设计的探讨

Discuss on Concentric Circle Design of Passenger Dedicated Line

研究目的:通过分析传统设计方法与客运专线铁路设计方法同心圆设计的原理,研究这两种设计方法的区别,并找出客运专线铁路设计方法存在的问题:可能造成设计线间距过大,浪费占地;然后通过定性与定量分析提出解决问题的建议。研究结论:客运专线铁路的同心圆设计方法将左、右线设计为近似的同心圆,其与理论同心圆的误差随着曲线半径的减小和曲线偏角的增大而增大;当上述两个因素达到一定的定量标准时,应采用传统的严格同心圆设计方法,以保证设计的技术、经济性。

Research purposes： The analyses of the concentric circle design principles of traditional design method and the design method of the track of passenger dedicated line are made and the study is done on the difference between these two methods to find the problems in the design method of passenger dedicated line, such as producing over - large design line spacing and wasting the land. The solution is offered on the basis of the qualitative and quantitative analyses. Research conclusions：By using the concentric circle design method of passenger dedicated line, the left and the right tracks are designed to a approximative concentric circle, and its error with the theoretical concentric circle increases with the decrease of curve radius and the increase of the curve drift angle. When these two factors reach a certain quantitive standard ,the traditional strict design method should be used for passenger dedicated line to ensure the technical and economical efficiencies of the design.