部分控制交通网络的流量分配问题及模型  

A traffic assignment problem and model for partially-controlled road network

作　　者：张雄飞[1] 李瑞敏[1] 李宏发[2] 史其信[1] 

机构地区：[1]清华大学交通研究所,北京100084 [2]中国民航大学空中交通管理学院,天津300300

出　　处：《公路工程》2011年第6期11-14,54,共5页Highway Engineering

基　　金：国家科技支撑计划(2009BAG13A06);国家自然科学基金青年科学基金项目(50908125)

摘　　要：为了研究由于交通控制设备资源有限,只有部分节点受到控制时交通流在路网上的分配,讨论了交通分配的一般准则和方法,并通过对出行者在控制节点和未控制节点的路径选择行为的假设,建立了混合交通配流模型。模型的最优状态为,出行者在未控制节点处都是选择从该节点到达终点路段综合费用最小的路段,而在控制节点处完全服从控制策略的引导选择路径。研究表明,当所有节点都被控制时,模型等价于SO模型;当所有节点都不受控制时,模型等价于UE模型。用一个简单的路网进行算例分析,说明了模型的可行性和合理性。To study traffic assignment problems when just some nodes on the road network are controlled by traffic control center due to limited traffic control devices,the basic methods and principles of traffic assignment were discussed.Based on the assumptions of travelers＇ route choice behavior at controlled and uncontrolled nodes,a mixed traffic assignment model was established.The optimal status for the proposed model is that,at uncontrolled nodes,travelers always choose the links with minimum comprehensive link cost from these nodes to the destination,and completely comply with the guidance at controlled nodes.Research shows that the model is equivalent to the SO model when all the nodes are controlled and equivalent to the UE model when all the nodes are uncontrolled.Numerical example of a simple network was presented to illustrate feasibility and rationality of the model.

关 键 词：交通分配 路径选择 系统最优 用户均衡 

分 类 号：U491.142[交通运输工程—交通运输规划与管理] U446.1[交通运输工程—道路与铁道工程]