轨道交通不完整缓和曲线的详细测设

缓和曲线一般用来连接轨道交通工程的直线段与圆曲线段 ,以实现二者之间的平稳过渡 ,这在有关工程测量著作中已有详细叙述。由于城市内部的空间条件限制 ,在轨道交通工程建设中也逐渐出现用缓和曲线来直接连接两个圆曲线段情况 ,使线路走向达到设计要求。本文对连接两个不同半径圆曲线段的不完整缓和曲线进行了具体分析研究 ,推导其放样元素的详细计算公式 ,并提出相应的测设方法。

The Minute Setting-out of Uncompleted Transition Curves in Railway Traffic

Transition curve has often been used to connect line and circle arc,in order that the line can gradually change to circle arc, or vice versa.However it can also be used to link two circle arcs with different radii in order to achieve the transition of road direction.This paper gives the detailed analyses of the uncompleted transition curves used to link two circle arcs,and introduces the method of minute setting\|out.