沙堡枢纽互通方案设计

The Scbeme Design of Shabao Hub Interchange

沙堡互通是重庆九永高速与绕城高速相交的四路枢纽互通,与绕城高速上既有珊瑚互通、九永高速主线收费站距离近,布设条件受限。在综合考虑上述因素的基础上,提出互通选型、匝道布设的主要思路,采用一侧设置集散车道、一侧匝道并行至珊瑚互通入口之后再流入绕城主线的方式,较好地解决了与珊瑚互通距离过近的问题,通车后运行良好,可供类似互通方案的布设参考。

Shabao Interchange is a four-way interchange between Chongqing Jiuyong Expressway and the Outer Ring Expressway. It is close to existing Shanhu Interchange on the Outer Ring Expressway and the toll gate of Jiuyong Expressway with limitations on its design. Based on the above factors,the main ideas of interchange selection and ramp layout are proposed. The method of setting up the merging lane and the ramp which runs parallelly to the Shanhu Interchange entrance and then merging into the Outer Ring Expressway. It resolved the issue that Shabao is too close to the Shanhu Interchange,and it runs well after being opened to the public,which can be used as a reference for similar interchange schemes.