交叉口下游公交站点对车辆饱和流率的影响

The influence of bus stops downstream of the intersection on the saturation flow rate of vehicles

公交站点的选择对于交叉口车辆饱和流率有着较大的影响。本文以交叉口下游直线式公交站点对交叉口饱和流率的影响为研究对象,对公交车辆的停靠过程及停靠时间进行分析,以此构建交叉口下游的交叉口流率影响模型,根据所建模型计算得出的数据对交叉口饱和流率进行识别,然后对通过交叉口的流率进行分析,确定交叉口饱和流率的识别流程及折减幅度计算方法,并分析在公交车停靠影响下交叉口流率的可能影响因素。最后对模型进行敏感性分析,得到车道合并折减系数以及车流率对交叉口饱和流率的影响关系。

The choice of bus stop has a great impact on the saturation flow rate of vehicles at intersections.In this paper,the influence of linear bus stops downstream of the intersection on the saturation flow rate of the intersection is analyzed,and the stopping process and stopping time of public transport vehicles are analyzed,so as to construct the intersection flow rate influence model downstream of the intersection,identify the intersection saturation flow rate according to the data calculated by the model,and then analyze the flow rate through the intersection,determine the identification process and reduction range calculation method of the intersection saturation flow rate,and analyze the possible influencing factors of the intersection flow rate under the influence of bus stops.Finally,the sensitivity analysis of the model is carried out,and the influence relationship between lane merger reduction coefficient and traffic flow rate on intersection saturation flow rate is obtained.