老城区畸形交叉口改造设计与实践研究——以西安市人民路与丰京路交叉口为例

Research on Reconstruction Design and Practice of Malformed Intersection in Old Urban Area of Xian City

随着城市机动车保有量的逐年增加,老城区道路网已无法满足日益增长的交通需求,出现拥堵。畸形交叉口因其线形怪异、冲突点多、服务水平低已成为老城区路网中产生拥堵的主要因素之一。因此,挖掘各类畸形交叉口交通潜力,探索其改造设计方法,对缓解城市交通拥堵,提高路网服务水平意义重大。为此首先阐述了畸形交叉口的分类、存在的问题及改造方法,并以西安市鄠邑区人民路与丰京路交叉口为例,进行实践检验。通过实际工程案例可以看出,采取工程改造、交通渠化和交通组织优化设计相结合的方法,能够有效提高畸形交叉口的服务水平,取得了良好效果。

With the annual increase of urban motor vehicle ownership,the road network in the old urban area has been unable to meet the increasing traffic demand,which results in congestion.The malformed intersection has become one of the main factors causing the congestion in the road network of old urban area because of its strange line shape,many conflict points and low service level.Therefore,it is of great significance to tap into the traffic potential of all kinds of malformed intersections and explore the reconstruction design methods for alleviating the urban traffic congestion and improving the service level of road network.For this purpose,the classification,the existing problems and the reconstruction methods of the malformed intersections are expounded.And taking the intersection of Renmin Road and Fengjing Road in Huyi District of Xian as an example,the practical test is carried out.The practical engineering case shows that the use of combined method of engineering reconstruction,traffic channeling and traffic organization optimization design can effectively improve the service level of the malformed intersections and the good effect is achieved.