中文摘要：

研究目的：高速铁路站场设计标准与常规铁路站场有很大区别,站场岔后曲线应满足较高的列车通过速度,以满足站场接发列车能力。本文采用车线动力分析方法研究高速铁路站场岔后曲线插入段和缓和曲线长度对行车动力性能的影响规律,探讨站场岔后曲线参数合理取值,为高速铁路站场设计参数提供理论依据。研究结论：根据舒适度条件,给出了不同通过速度条件下岔后曲线半径与超高匹配关系,以及不同岔后曲线半径条件下缓和曲线长度取值;对岔后曲线插入段和缓和曲线长度优化研究表明：通过岔后曲线夹直线长度应尽量避免取夹直线上车辆第一周期峰值衰减距离与定距之和,对于1200m曲线,其夹直线不宜选取30m;岔后缓和曲线长度超过50m时,对车辆舒适性的改善不再明显。

英文摘要：

Research purposes：The design standard of the station yard of high-speed yard is very different from that of conventional railway.The curves behind the turnouts should meet the requirement of high running speed of train to enhance the capacity of train reception and departure of the station yard.Based on the model of vehicle-line dynamic interaction,the study is done on the effect rules of the length of inserted section in curves behind the turnout and the length of transition curves on the vehicle-line dynamic response,and the discussion is made on the rational parameter values of curves behind the turnouts for providing the theoretical basis to the design parameter of the station yard of high-speed railway.Research conclusions：According to the comfortable requirement,the matching relationship between radius of curves behind the turnouts and superelevation under the conditions of different train running speeds,and the values of transit curves radius under different radius of curves behind the turnouts are given out.The study on optimizing the length of inserted section in curves behind the turnout and length of transition curves shows the length of the folded line between curves behind the turnouts should avoid taking the value of the sum of the fix distance and peak value attenuation distance in the first cycle of vehicle vibration on folded line.To the curves with radius of 1 200 m,the folded line length of 30m is unsuitable.When the length of transition curves behind turnouts is more than 50 m,the comfortableness is not improved obviously.