关于驼峰迂回线竖曲线半径取值再探

Re-Exploration on Determining the Value of Radius of Vertical curve of Hump Circuitous Line

为了合理地确定迂回线竖曲线半径的取值，研究了凸形及凹形两个断面的不同情况下迂回线竖曲线半径的取值方法，并针对各种不同情况，在进行详细的公式推导后，分析得出每一种大型车辆在不同的坡度差下，能安全通过迂回线所需要的最小竖曲线半径。

n order to determine reasonably the value of the radius of vertical curve of hump circuitous line,the paper studies the methods of determining the value under different circumstances of the protruding and concave sections,and after detailed formula calculation of each different circumstance,finds the minimum radius of vertical curve needed for each type of large vehicles to pass the circuitous line safely under different gradient difference.