入口匝道与毗邻交叉口交通流关联度模型  

Research on the Correlation Degree Model of the Traffic Flow between the Entrance Ramp and the Adjacent Intersections

作　　者：严妍 朱晓东 吴兵[1] YAN Yan;ZHU Xiao-dong;WU Bing(Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学道路与交通工程教育部重点实验室

出　　处：《兰州交通大学学报》2019年第2期32-37,共6页Journal of Lanzhou Jiaotong University

摘　　要：随着城市交通需求的增长,快速路及普通道路系统的拥堵问题日益严重,入口匝道及其毗邻的交叉口群往往形成区域性的拥堵,构成路网中的瓶颈节点.入口匝道作为快速路系统与普通道路系统的连接节点,探究其与毗邻平面交叉口之间的关联性从而筛选出与入口匝道高度相关的交叉口并进行协调控制成为解决拥堵问题的思路之一.在对入口匝道与毗邻平面交叉口交通流关联度的影响因素进行分析的基础上,建立基于出口道路径关联度的入口匝道与毗邻平面交叉口关联度模型,从而实现定量计算入口匝道与其毗邻交叉口之间的关联度,并使用上海SCATS系统数据验证其有效性.所建立的模型能够有效的筛选出与入口匝道交通流高度关联的交叉口,明确入口匝道影响范围边界,并可以作为协同控制策略关键路径筛选的理论依据.Expressway entrance ramp often forms the bottleneck node of the expressway traffic flow.The congestion on the entrance ramp is easy to spread to the adjacent intersections,which affects the traffic operation in the ramp's influence area and causes regional congestion.The entrance ramp is the connecting nodes between the fast road system and the general road system,exploring the relationship of the traffic flow between the intersections and the entrance ramp has become one of the ideas to solve the problem of congestion.Based on the analysis of the influencing factors of the traffic flow correlation between the entrance ramp and the adjacent intersection,the correlation degree model between entrance ramp and intersections is established to quantitatively study the relationship between entrance ramp and its adjacent intersections.In this study,the data of Shanghai SCATS system are used to verify its validity.The model established in this paper can effectively search the intersections highly related to the traffic flow on the ramp,and define the boundaries of the influence area of the ramp which can be used as a theoretical basis for critical path selection of cooperative control strategy.

关 键 词：交通工程 关联度模型 动态时间弯曲距离 入口匝道 平面交叉口 

分 类 号：U491[交通运输工程—交通运输规划与管理]