1520mm宽轨高速铁路平面曲线设计参数研究

研究旨在为我国高速铁路在1 520 mm宽轨地区的应用提供平面曲线参数的计算方法和设计选用的参考。运用我国高速铁路设计规范中的计算方法和判定条件,计算1 520 mm宽轨高速铁路平面曲线设计参数,分析不同平面曲线半径和设计超高对列车行驶安全和旅客舒适度的影响,得出不同的速度目标值对应的平面曲线参数结果,包括曲线半径合理取值范围、最小曲线半径取值和缓和曲线长度值。研究结论:(1)1 520 mm宽轨高速铁路最小曲线半径主要受到设计速度和速度匹配的影响,设计速度越高,速差越大,最小曲线半径值越大;(2)在同等条件下,1 520 mm宽轨的最小曲线半径取值大于标准轨的最小曲线半径取值;(3)缓和曲线长度值主要受设计超高和设计速度控制,与轨距基本无关。

Study on Design Parameters of Plane Curve for 1 520 mm Broad Gauge High-speed railway

This paper aims to provide a reference for the calculation and design of plane curve design parameters applicable to regions with 1 520 mm broad gauge railway.Based on calculation methods and decision conditions of china high-speed railway design code,this paper calculates the plane curve design parameters of 1 520 mm broad gauge high-speed railway and analyzes the influence of different plane curve radius and super-elevation values on train operation and passengers' comfort. The range of reasonable radius,the minimum curve radius and transition curve values at different speeds are obtained.Research conclusion:( 1) The minimum curve radius of 1 520 mm broad gauge high-speed railway are influenced mainly by the designed speed and matched speed. The higher the design speed,the greater the speed difference and the minimum curve radius are.( 2) Under the same condition,the minimum curve radius of 1 520 mm broad gauge railway is greater than that of the standard gauge.( 3)Transition curve values are mainly controlled by designed super-elevation and speed in independent of the gauge.