山区狭长地形条件下回转绕行互通方案可行性探讨  

Feasibility study on the turnaround interchange scheme under narrow and long terrain conditions in mountain areas

作　　者：王力伟 程梦筠 许苑 谢振江 WANG Liwei;CHENG Mengyun;XU Yuan;XIE Zhenjiang(Hubei Communications Planning And Design Institute Co.,Ltd.,Hubei Wuhan 430051 China)

机构地区：[1]湖北省交通规划设计院股份有限公司,湖北武汉430051

出　　处：《山东交通科技》2024年第5期118-121,共4页

摘　　要：对山区狭长地形条件下互通立交设计方案进行了探讨,得出辅助车道回转绕行互通方案与地形、地貌的协调性好,规模小,投资少,优势明显,可作为狭长地形条件下互通优选方案。对通行能力进行分析,得出交织区长度与流率比、交织区车流密度关系,以及不同行车速度、不同流率比下辅助车道最小长度,可以类似项目设计及研究提供依据。The design scheme of interchange under narrow terrain conditions in mountainous areas was discussed,and it was found that the auxiliary lane turning and detouring interchange scheme has good coordination with terrain and topography,small scale,low investment,and obvious advantages.It can be used as the optimal interchange scheme under narrow terrain conditions.Analyzing the traffic capacity,obtaining the relationship between the length of the weaving section and the flow rate ratio,the density of traffic flow in the weaving section,and the minimum length of the auxiliary lane under different driving speeds and flow rate ratios can provide a basis for similar project design and research.

关 键 词：辅助车道回转绕行互通 狭长地形 流率比 交织区 辅助车道最小长度 

分 类 号：U412.35[交通运输工程—道路与铁道工程]