此外，通过传统的质点方法和行驶动力学，以缓和曲线长度为例对线路设计参数进行了计算。
In addition, calculations through traditional method such as particle means and driving dynamics for line design parameters are also done.
阐述了决定缓和曲线的主要因素，指出了缓和曲线（参数、长度）的选取和实际应用。
The paper discussed the main factors of influencing transition curve, introduced the choice and application of transition curve parameter and length.
方案选定后，重新确定样条函数的参数值，通过参数值的变化，准确表达线形中的直线段、圆弧段、缓和曲线段等。
Then selecting parameters again, we can express the alignment's line, arc, transition curves through the variations of parameters.
文中导出了五次代数式缓和曲线的参数方程和曲线各元素的公式；
The parameter equation and the formula of each element of the curve are set up and compared with that of clothoid.
总结了现行的高速铁路主要设计参数的研究方法，如最小圆曲线半径、缓和曲线线形及长度、竖曲线半径等参数的确定原则和方法。
At last this paper summarizes research methods of main line parameters of High-speed railway, such as the minimum radius of horizontal curves, length and alignment of transition curves.
总结了现行的高速铁路主要设计参数的研究方法，如最小圆曲线半径、缓和曲线线形及长度、竖曲线半径等参数的确定原则和方法。
At last this paper summarizes research methods of main line parameters of High-speed railway, such as the minimum radius of horizontal curves, length and alignment of transition curves.
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