公交影响条件下基于交通波理论的排队研究  

Queuing with the Affection of Buses Based on Traffic Wave Theory

作　　者：关桢[1] 魏丽英[1] 

机构地区：[1]北京交通大学交通运输学院,北京100044

出　　处：《交通运输系统工程与信息》2010年第5期161-166,共6页Journal of Transportation Systems Engineering and Information Technology

基　　金：国家重点基础研究开发计划(973计划)项目(2006CB705500);"十一五"国家科技支撑项目(2006BAG01A01);中央高校基本科研业务费专项资金资助(2009JBM043)

摘　　要：以交通波理论为指导,以平面信号交叉口为分析对象,重点研究了公交影响条件下单机动车道的排队过程.结合不同车型机动车混合行驶的特点,通过引入不同车型间的饱和车头时距值并对其进行统计分析,刻画信号周期内交通波的传递情况,探讨了车流平均饱和车头时距和排队消散密度的变化规律,改进了传统的交通波排队模型.基于北京四道口信号交叉口的实际交通情况,结合交通调查结果和MATLAB程序计算结果,对模型进行参数标定和有效性验证,得到相关评价指标及其变化规律.研究发现,交通波理论在公交车-小汽车混合车流的排队问题研究中,具有较强的适用性;另外,研究饱和车头时距值的变化规律有利于更加准确地刻画排队过程中交通波的传递行为.The process of queuing on a single carriageway under the affection of the buses is mainly studied with the traffic wave theory as the guidance and the signalized intersection as the analysis object.By introducing and statistically analyzing the use of saturated-headways between vehicles of different types with the characteristics of the mixed traffic,the transmissions of the traffic wave during the signal cycles is described to explore the variation laws of the average saturated-headway and density of dissipation and improve the traditional models.Based on the survey and computation in MATLAB,the calibration and validation of the model are conducted as well as relevant evaluation indexes and variations are obtained,with consideration of the actual traffic conditions at the Sidaokou signalized intersection of Beijing city.The study finds that the traffic wave theory has strong applicability in the queuing analysis of the bus-car mixed traffic flows and the research on variations of the saturated-headways is conducive to portray the process of the transmission behaviors of the traffic waves while queuing more accurately.

关 键 词：城市交通 交通波理论 排队 混合行驶 饱和车头时距 

分 类 号：U491[交通运输工程—交通运输规划与管理]