曲线超高计算的优化方法及应用

为进一步优化曲线超高计算方法,文章以现有计算方法为基础,指出速度取值是曲线超高计算的关键,提出了将"速度-距离"曲线模拟的速度和曲线允许通过速度相结合来进行曲线超高计算的方法。给出了曲线超高检算中实设超高、欠超高、过超高、超高顺坡率、欠超高顺坡率等主要指标的优化取值方案,以及超高顺坡率和欠超高顺坡率的简化计算方法。以此为基础,对石济客运专线和衢九铁路曲线超高进行了计算。通过实车检测可知,所提出的方案能够取得较好的旅客舒适度,从而验证了优化计算方法和标准的合理性。该方法和标准已在全国高速铁路广泛使用,为我国高速铁路动车组运行的高平稳性和高舒适度提供了保障。

Optimization Method and Application of Curve Superelevation Calculation

In order to further optimize the calculation method of curve superelevation,based on the existing calculation methods,this paper pointed out that the key of curve superelevation calculation is to select the value of velocity,and proposed a method of curve superelevation calculation by combining the speed simulated by velocity-distance curve with the allowable speed of curve.The optimization value selection scheme of main indexes such as practical superelevation,deficient superelevation,surplus superelevation,superelevation downslope rate and deficient superelevation downslope rate in curve superelevation checking was given,and the simplified calculation methods of superelevation downslope rate and deficient superelevation downslope rate were also put forward.On this basis,the curve superelevations of Shijiazhuang-J inan passenger dedicated railway and Q uzhou-J iujiang railway were calculated.The actual vehicle test shows that the scheme can achieve better passenger comfort,thus verifying the rationality of the optimization calculation method and standard.This method and standard have been widely used in high speed railway,which provide a guarantee for high stability and comfort of high speed electric multiple units in China.