基于运行速度的喇叭形立交匝道超高设计研究

A Study of Ramp Superelevation Design on Trumpet Interchange Based on Operating Speed

通过分析喇叭形立交匝道行车过程特点,提出了将汽车行驶过程与匝道线形指标相结合的运行速度分段预测方法,并在运行速度预测的基础上确定匝道超高,最后结合实例具体阐述了其应用过程,对传统的基于设计速度确定匝道超高的方法进行了改进。

Through analyzing the characteristics of driving process on ramp of trumpet interchange, this article puts forward a prediction method of operating speed segments combining driving process with ramp linear index to determine ramp superelevation based on the operating speed prediction. In the end, it illustrates its application process by an example, improving the traditional method of determining the ramp superelevation based on the design speed.