城市道路横断面优化设计方法研究

Research on Optimization Design Method of Urban Road Cross Section

城市道路横断面是承担交通流的直接空间载体,其设计水平的高低会对交通运行效率产生直接影响。鉴于此,首先对城市道路进行了分类,并从交通方式、景观绿化、土地利用等方面分析了其对横断面优化设计的影响;其次研究了城市道路横断面通行能力的计算方法、影响因素及横断面车道数优化计算方法;最后探讨了道路横断面宽度与建筑高度关系,以及慢行交通一体化设计理念,并提出在满足城市道路基本功能的基础上,实现交通量和空间性能的有机结合的城市道路横断面优化设计方法,以期为类似城市道路横断面设计提供一定的理论指导。

Urban road cross section is the direct space carrier of traffic flow,and its design level will have a direct influence on traffic operation efficiency.In view of this,the urban roads are classified firstly,and its influence on the cross-section optimization design is analyzed from the aspects of traffic mode,landscape greening and land use.Then,the calculation method of cross-section traffic capacity,the influencing factors and the optimization calculation method of the number of cross-section lanes of the urban roads are studied.Finally,the relationship between the cross-section width of the road and the height of the building,and integration design concept of slow traffic are discussed.On the basis of meeting the basic functions of urban road,the optimization design method of urban road cross section to realize the organic combination of the traffic volume and the spatial performance is put forward in order to provide some theoretical guidance for the cross-section design of the similar urban roads.