大兴国际机场北线西延高速公路(北京段)选线设计体会

Experience in Route Design of West Extension Expressway(Beijing Section)of Daxing International Airport North Line

大兴国际机场北线西延高速公路(北京段)是大兴国际机场“五纵两横”骨干交通网络中的重要“一横”,其主要功能是大兴国际机场对外快速集散的主要通道,也是河北、房山等地进出机场的快速联络线。结合大兴国际机场北线西延高速公路(北京段)设计实践,分析论述了项目路线方案选定过程,得出影响高速公路路线布设各因素的重要程度由大到小依次为:永久基本农田、拆迁及社会环境影响、险工等水利设施、线型指标、工程造价。希望能为其他同类工程设计提供一些参考。

West extension expressway(Beijing section)of Daxing international airport north line is an important"one horizontal"in the"five vertical and two horizontal"backbone traffic network of Daxing international airport.Its main function is the main channel of Daxing international airport's external rapid distribution,and also the fast connecting line of Hebei,Fangshan and other places in and out of the airport.This paper analyzed and discussed the process of the route design and obtained the importance of various factors affecting the expressway route design Combing with the design practice of west extension expressway(Beijing section)of Daxing international airport north line.It is concluded that the order of importance of the factors affecting the expressway route design from large to small is:permanent basic farmland,influence of demolition and social environmental,water conservancy facilities such as dangerous section,index of route and investment of project.Hoping to provide some reference for other similar engineering design.