竖曲线半径对道路纵坡的影响

Affection of Vertical Curve's Radius to Longitudinal Gradient of the Route

分析了路线在变坡点插入竖曲线后纵坡的变化规律,推导出产生不满足最小纵坡要求的条件及路段长度;指出由此而产生的不良后果并提出了相应的解决方案.提出在特殊路段,应对竖曲线的最大半径进行限制.

This paper analyses the changing law of longitudinal gradient of the route after the vertical curve is inserted at the grade change point and deduces the factors not meeting the minimum longitudinal gradient requirements and the length of the section of a road, points out the bad consequence and the related ways to solve this problem. The paper puts forward that it mast to limit the maximum radius of vertical curve on some special section of road.