信号交叉口第一辆车到达分布及影响因素分析  

Analysis on the Arrival Distribution and Influencing Factors of the First Car Arrival at the Signalized Intersection

作　　者：张惠玲[1] 杨林玉[1] 敖谷昌[1] ZHANG Huiling;YANG Linyu;AO Guchang(School of Transportation,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学交通运输学院,重庆400074

出　　处：《郑州大学学报（工学版）》2019年第3期73-78,共6页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金项目(51508061);重庆市交通运输工程重点实验室开放基金(2016CQJY005)

摘　　要：信号交叉口延误是进行交叉口的设计及服务水平评价等的重要参数依据,而红灯期间第一辆车的到达影响因素有助于更好地分析信号交叉口延误.首先提取了红灯期间第一辆车的到达时间与红灯启亮时间的差值,分析了第一辆车的到达特征.综合各种可能影响车辆到达的因素,使用正交试验进行了组合方案设计优化;以标定后的重庆市学府大道某信号交叉口进口道的一条直行车道作为平台,使用VISSIM软件对各试验进行了仿真分析,得出了信号交叉口影响红灯期间第一辆车到达的因素程度依次为饱和度、车辆到达类型、交叉口间距、绿信比、饱和流量、大车率.最后考虑到饱和流量和饱和度存在交互影响,对饱和流量和饱和度使用交互分析,得到结果为:在饱和流量为1650 pcu·h^(-1),且饱和度小于0.25时,对车辆到达的影响程度最高.Signalized intersection delay was one of the core parameters in intersection design and evaluation of service level,and analyzing the first vehicle′s arriving could help to analyze the intersection delay.Firstly,the features of the first vehicle were probed based on time difference between arriving time of the first vehicle and the start of the red time.Considering the factors that could impact the vehicle′s arriving,the orthogonal experiment was used to optimize the experiments′combination.Using the validated through lane of the signalized intersection to simulate the orthogonal experiments,it was proved that the order of the factors impacting the first vehicle arrival during red indication was the saturation,types of vehicles arrival,intersection spacing,the split,the saturated flow,and the bus ratio.Finally,for the interaction phenomenon of saturated flow and saturation,using transactional analysis to analyze,the results was:when the saturated flow was 1650 Passenger Car Unit/Hour(pcu·h^-1),and the saturation was under 0.25,there was the highest level of impact on the first vehicle′s arriving.

关 键 词：交通工程 第一辆车到达 正交试验 信号交叉口 微观仿真 

分 类 号：U491.264[交通运输工程—交通运输规划与管理]