城市快速路建设规模选择及交叉节点形式研究

Selection on Construction Scale and Study on Intersection Node Form of Urban Expressway

摘要:

随着城市的发展，多条城市快速路、主干路的交叉口交通量趋于饱和，通行能力受限，交通拥堵日益严重，制约着城市的整体发展。作为中心城区对外衔接的城市快速通道，城市快速路的建设有以下两方面作用：一方面，可实现交通扩容，缓解地面道路交通压力，满足交通量增长的需求；另一方面，可消灭对外快速通道最后的“红绿灯”，满足对外交通快速、连续的交通需求。 雄楚大街（梅家山立交—楚平路）改造工程位于湖北省武汉市武昌区， 是武汉主城区“三环十三射”快速路的重要组成部分（见图1）。工程西起梅家山立交（K0+417），东至楚平路（K7+320），路线全长 6 903 m，采取“主线高架桥+地面辅路”的建设形式。主线高架桥采用双向6车道，宽26 m。

Abstract:

Aiming at the problem of traffic congestion seriously restricting the overall development of a city, the urban roads are reconstructed in expressway, which can effectively relieve the traffic pressure of ground road. Combined with Wuhan Xiongchu Avenue (Meijiashan Interchange - Chuping Road) Reconstruction Project, how to reasonably select the construction form and scale of expressway and how to deal with the contradiction between the social economy and urban development demand are demonstrated. Three schemes of expressway cross section design are compared and selected. And the treatment mode of important intersection nodes of expressway is studied. The study result shows that the construction form of "elevated road + ground auxiliary road" is recommended. The double-way six-lane scale is used for the main road and auxiliary road respectively. The 11-m lateral dislocation BRT platform scheme is used in cross section.