摘要
通过分析车辆在B型喇叭立交环形匝道上的交通特性,提出了B型喇叭立交环形匝道线形指标的取值范围(如设计速度、平曲线半径等);通过分析B型喇叭立交安全运行的影响因素,总结了六种提高B型喇叭立交运行安全性的措施;最后建议B型喇叭立交环形匝道宜采用水滴形卵形曲线来布设,并结合实例阐述了该方法在B型喇叭立交设计中的具体应用。
According to the analysis on the traffic characteristics of the vehicles on the loop ramp of B-type trumpet interchange,the article puts forward the range of alignment index on the loop ramp of B-type trumpet interchange,such as design speed,horizontal curve radius and etc.Based on the analysis of the factors to influence the safe operation of B-type trumpet interchange,the article sums up six kinds of measures to improve the operation security of B-type trumpet interchange,proposes to use the layout of oval curve as a drop of water suitable for the loop ramp of B-type trumpet interchange type,and sets forth the specific application of this method in the design of B-type trumpet interchange by the engineering cases.
出处
《城市道桥与防洪》
2012年第9期21-23,41,共4页
Urban Roads Bridges & Flood Control
