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

针对交通拥堵严重制约城市整体发展的问题,对城市道路进行快速化改造,以有效缓解地面道路交通压力。结合武汉市雄楚大街(梅家山立交—楚平路)改造工程,对如何合理选择快速路建设形式和规模、如何处理好社会经济与城市发展需求间的矛盾进行了论证,对快速路横断面设计进行了3种方案比选,并对快速路重要交叉节点的处理方式进行了研究。研究结果:推荐采用"高架道路+地面辅路"建设形式,主、辅路分别采用双向6车道规模,横断面采用11 m侧式错位BRT(快速公交系统)站台方案。

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.