南通市海门区江海路-S336立交方案比选研究

Study on Comparison and Selection of Interchange Schemes between Jianghai Road and S336 in Haimen District, Nantong City

摘要:

互通式立交节点设计应结合其现状和发展目标，合理制订总体方案，切实做到节点设计功能适用、经济合理。以南通市海门区江海路-S336立交节点工程为例，对其整体路网和节点功能、现状进行分析，并对交通量增长进行预测；在初步立交造型确定的条件下，综合考虑节点交通需求、现状老桥和周边建设条件等因素，提出双层蝶形立交和三层蝶形立交2种设计方案，并从互通层次、工程规模、交通功能、管线影响等方面对方案进行比选，最终结合项目整体需求确定主要控制因素，因地制宜地选择立交方案；此外，详细介绍了立交总体布置的思考过程和设计要点，为今后类似项目设计提供一定的参考与借鉴。

Abstract:

The design of interchange nodes should be based on the current situation and development goals, and a reasonable overall scheme should be formulated to ensure that the design of the nodes is functionally applicable and economically reasonable. Taking the interchange node project between Jianghai Road and S336 in Haimen District, Nantong City as an example, the overall road network, node function and current situation are analyzed, and the growth of traffic volume is predicted. Under the condition of determining the preliminary interchange shape, and comprehensively considering factors such as traffic demand at the node, existing bridges and surrounding construction conditions, two design schemes of double-deck butterfly interchange and triple-deck butterfly interchange are proposed. The comparison and selection of the schemes are conducted from the aspects of interchange decks, engineering scale, traffic function and pipeline impact. Finally, combined with the overall needs of the project, the main controlling factors are identified, and the interchange scheme is selected according to local conditions. And the thinking process and key design points of the overall layout of the interchange are introduced in detail, which provides the reference for similar projects in the future.