吉安南互通与西外环立交节点方案研究

随着我国城镇化进程逐渐加快，城市建设范围开始向外扩展，早期建设在城市外围的高速公路出入口已邻近新的城市建设开发边界，与城市外围快速道路逐渐交融，产生了高速出入与城市快速交通需求叠加的多路交叉口。吉安市高速南互通与西外环快速路相交形成了五路交叉口，通过分析该节点功能定位、交通需求，结合城市规划发展阶段，论证合理方案，以期为同类型城市多路交叉口提供经验。

Study on Node Scheme of South Interchange and West Outer Ring Expressway in Jian

With the gradual acceleration of urbanization in China, the scope of urban construction starts to expand outward. In the early construction, The gateway of expressway in the periphery of city has been close to the new urban construction and development boundary, and is gradually integrated with the expressway outside the city, which will produce the multi-way intersections with the superposed expressway gateway and urban rapid traffic demand. The five-road intersection is formed by the south interchange and the west outer ring expressway in Jian. By analyzing the functional localization and traffic demand of the node, combining with the development stage of urban planning, the reasonable scheme is demonstrated in order to provide the experience for the same type of urban multi-road intersections.