摘要
基于安全性设计原则,具体分析匝道平、纵指标,讨论了T型立交匝道设计速度的合理取值。以"高接低"与"高接高"两种情况为例,分别探讨了A型和B型喇叭立交安全方面的优劣性与适用范围。结合T型立交与喇叭立交,提出了三岔互通立交安全性设计的建议。
Based on the design principle of safety, this paper analyzes the horizontal and longitudinal indicators of ramp in detail and discusses the reasonable value of design speed for T-type interchange ramp.Taking two situations of high connecting low and high connecting high as the example, this paper discusses the advantages, disadvantages and application ranges in safety design of A-type and B-type trumpet interchanges separately. According to the T-type interchange and the trumpet interchange, this paper puts forward the proposal for the safety design of three-leg interchange.
引文
[1]郭腾峰,刘建蓓,汪双杰.基于运行速度特征的公路平曲线设计半径推荐取值研究[J].中国公路学报, 2010(s1):8-12.
[2] JTG/T D21—2014,公路立体交叉设计细则[S].
[3] JTG D20—2017,公路路线设计规范[S].
[4] JTG B05—2015,公路项目安全性评价规范[S].