高速铁路线路参数与线路方案动力分析研究

线路线形条件对高速铁路行车安全性及乘坐舒适性的影响显著增强。我国在制定高速铁路规范时,总结吸收国内外建设及运营管理经验,提出了较高的线形标准。采用动力仿真分析方法对高速铁路参数进行探讨,对高速铁路线路关键参数进行分析,提出线路平、纵断面关键参数合理取值。针对京沈高铁试验段开展更高速度综合实验,对线路线形方案开展动力学分析及评估。提出线路圆曲线、反向曲线夹直线最小长度、竖曲线最小半径关键参数合理取值,可有效减少工程建设投入;通过对京沈高铁试验段开展更高速度综合实验,对线路线形方案开展动力学分析及评估,提出通过增加8 000 m曲线半径超高的方法,提高速度400 km/h列车舒适度。

Study on Dynamic Analysis of Track Alignment for High-speed Railway

The influence of the track linear condition on the safety and ride comfort of high-speed railway is getting enhanced remarkably. When formulating high-speed railway specifications, China summed up the experiences of construction and operation management at home and abroad, and put forward a high linear standard. In this paper, dynamic simulation method is used to discuss the parameters of high-speed railway, and key parameters of high-speed railway line are analyzed. For the Beijing-Shenyang high-speed rail test section, a higher speed synthesis experiment was conducted, and dynamic analysis and evaluation of the linear scheme were carried out. In this study, key parameters of the circular curve, the minimum length of the straight line clamped with reverse curve and the minimum radius of the vertical curve are reasonably selected, which can effectively reduce the construction investment. Through comprehensive experiments at higher speed in Beijing-Shenyang High-speed Railway test section, dynamic analysis and evaluation of line alignment scheme are performed, and the method by increasing the cant of the curve of 8000 m radius is proposed to improve the comfort of 400 km/h train.