越岭线公路特点及路线线形设计研究

Research on the Characteristics and Route Alignment Design of Highway on Ridge Crossing Line

为了提高越岭线公路的路线设计水平,文章首先总结了越岭线公路路线特点和基本设计流程,然后通过理论推导和工程经验分析了越岭线公路路线圆曲线半径、缓和曲线、纵坡、坡长等参数的选择,以及平纵组合形式。并依托某越岭线公路项目进行路线设计分析,结合《公路工程技术标准》(JTG B01—2014),基于“人性化”和运行安全原则,提出了避险车道的设计方法,研究成果可为类似的越岭线公路线形设计提供一定的理论指导。

In order to improve the level of route design of highway on ridge crossing line,this paper first summarizes the characteristics and basic design process of highway on ridge crossing line,and then analyzes the selection of parameters such as radius of circular curve,transition curve,longitudinal slope and slope length,as well as the horizontal and vertical combination form of highway on ridge crossing line through theoretical derivation and engineering experience.The route design analysis is carried out on the basis of a highway on ridge crossing line project,that is,combined with the Technical Standards for Highway Engineering(JTG B01—2014),based on the principle of"humanization"and operation safety,the design method of the escape lane is proposed.The research results can provide some theoretical guidance for the alignment design of similar highways on ridge crossing line.