渝湘复线高速进城通道方案研究

Study on Scheme of Chongqing-Hunan Double-line Expressway Channel to City

为充分发挥射线高速的交通功能,提前做好射线高速进城通道路幅、节点及相关建设条件的前期研究工作非常必要。以渝湘复线高速进城通道方案研究为例,在对项目功能定位、交通需求预测分析的基础上,阐述了总体方案构思与设计。对射线高速进城通道车道数论证、路幅型式选择、平纵设计及节点选型等进行了分析论证;对高架主路+地面辅路方案和高架及地下分段主路+地面辅路方案进行了分析比选,并选择了方案一;对项目所涉两处立交的现状、功能定位及选型进行了分析阐述。最后总结认为,随着城市的建设与发展,城区建设条件日趋复杂,做好射线高速进城通道的前期研究工作,可确保后期射线高速进城通道的建设条件及可实施性。

In order to fully play the traffic functions of radial expressway, it is very necessary to carry out the preliminary study on the roadways, nodes and related construction conditions of radial expressway channel to city. Taking the study on the scheme of Chongqing-Hunan Double-line Expressway Channel to city as an example, on the basis of the project functional orientation and the traffic demand prediction and analysis, the conception and design of overall scheme are expounded. The lane number, roadway type, plane and vertical designs, and node type of radial expressway channel to city are compared, analyzed and demonstrated. The viaduct main and auxiliary road scheme + ground main and auxiliary road scheme are analyzed and compared. Scheme I has been selected. The present situations, functional orientations and types of two interchanges involved to this project are analyzed and expounded. Finally, the conclusion shows that with the urban construction and development, the construction conditions of urban area are getting more complicated.The good preliminary study of radial expressway channel to city can ensure the construction conditions and implementablity of radial expressway channel to city in the later period.