空间受限条件下的互通设计研究——以南京机场高速九龙湖互通工程为例

Research on the Interchange Design under the Condition of Limited Space——Taking Interchange Project Between Jiulong Lake and Nanjing Airport Expressway as an Example

在城市中心城区,受项目用地、环境保护、互通间距等控制因素影响,互通设计中存在建设空间受限的情况。随着城市规模的外扩,机场高速公路的功能需求发生了转变。文章以南京机场高速九龙湖互通为例,在互通节点的功能定位、建设条件分析的基础上,充分考虑了互通方案对机场高速集疏运功能的影响,阐述了互通立交方案设计思路和比选过程,将综合评价最优、实施矛盾最小、近远期结合的近期不完全互通方案作为推荐方案,方案设计思路可为城市互通设计中遇到空间受限的情况提供设计的参考和借鉴。

In the central urban area of the city,due to the control factors such as project land use,environmental protection,and interchange spacing,the construction space is limited in the interchange design.With the expansion of the city scale,the functional requirements of the airport expressway have changed.Taking the Interchange between Jiulong Lake and Nanjing Airport Expressway as an example,based on the analysis of the functional orientation and construction conditions of the interchange node,this paper fully considers the influence of the interchange scheme on the collection and distribution function of the airport expressway,expounds the design ideas and comparison process of the interchange scheme,and takes the short-term incomplete interchange scheme with the best comprehensive evaluation,the smallest implementation contradiction and the combination of short term and long term as the recommended scheme.The design idea can provide design reference for the urban interchange design under the situation of limited space.