城市快速路匝道合流区车道调整方法研究

Method of lane adjust about urban rapidway ramp merge area

针对城市快速路匝道合流区可以通过调整车道的方法改善通行能力,结合交通流理论相关成果,分别从定性分析和定量计算2方面进行研究。以间隙-接受理论为基础,分析车道宽度与车速、流量的关系,进而采用spss软件拟合数据获得外侧车道车头时距分布与临界车头时距,计算匝道汇入能力,建立匝道合流区车道调整模型,并通过上海市快速路实例对模型和方法进行检验,对模型的适应性和效率进行分析和评价。

According to the fact that urban rapid way entrance ramp merge area capacity can be improved through lane adjust,quantitative analysis by combining related research results of the traffic flow theory was made.Based on gap-accepted theory,the relationship between lane widths with speed and flow rate was analyzed.By fitting the data using spss software,outside lane headway distribution and the critical headway were obtained,and the ramp capacity and the urban rapid way ramp merge area analysis model about lane adjust were calcuated,By analyzing the example of Shanghai,the analysis and evaluation about model adaptability and efficiency was carried out.