高速铁路有砟与无砟轨道过渡段优化设计研究

Optimization Design Study on Transition Section Between Ballast Track and Ballastless Track of High Speed Railway

以大(同)西(安)高铁有砟轨道与CRTSⅠ型双块式无砟轨道过渡段为研究对象,开展轨道过渡段动力性能仿真计算,并以钢轨挠度变化率为评价指标分析过渡段有、无道砟粘结措施时的轮轨动力响应结果,从动力学角度对过渡段是否可以取消道砟粘结措施提出建议。

Taking the transition section between the ballast track and CRTS Ⅰ double-block ballastless track of Datong-Xi＇an high speed railway as the research object,the dynamic performance simulate calculation of track transition section was carried out,the wheel/rail dynamic response results of transition section with ballast glue measures or not were analyzed by considering the rail deflection change rate as the evaluation index,and whether the ballast glue measures should be canceled or not was discussed from the perspective of dynamics.