项目名称: 基于交通波理论和宏观基本图的同时考虑交叉口上下游排队的交通控制方法研究
项目编号: No.51278455
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 建筑科学
项目作者: 王福建
作者单位: 浙江大学
项目金额: 80万元
中文摘要: 信号交叉口的排队形成与消散过程以及交叉口上下游排队之间的交互作用是交通控制中的核心问题,而基于交通波理论的冲击波剖面模型SPM能够方便地跟踪排队过程,计算行程时间、延误、停车次数等性能指标。宏观基本图MFD描述了路网中任何时间的车辆总数和网络流出量之间的关系,基于MFD的周边控制策略确保网络车辆总数在最优值附近,并最大化网络流出量,不会导致网络交通到达锁死状态。通过视频调查进一步验证和完善SPM模型,通过仿真分析确定MFD,然后研究基于SPM模型的"同时考虑交叉口上下游排队"的战术控制策略与基于宏观基本图的战略控制策略(周边控制策略)相结合的交通控制理论和方法,能够简便、快速地设计和评价干线控制方案(线控)、区域控制方案(面控),为缓解实际网络交通压力提供了更完善的理论依据。
中文关键词: 交通波理论;宏观基本图;交叉口;排队;交通控制
英文摘要: Queue build-up and dissipation process of signalized intersections as well as the interaction between the upstream and downstream queues are the core issues in the traffic control. Shockwave Profile Model (SPM) which based on traffic wave theory can track queuing dynamics more conveniently, and also can calculate travel time, delay, stops and some other related performance indicators. Microscope Fundamental Diagram (MFD) describes the relationship between the total number of vehicles at any given time (the accumulation) and the rate at which trips reach their destinations (the output). Depending on MFD of a specific area, we can apply perimeter control strategies to ensure that the vehicular accumulation is maintained as closely as possible to its sweet-spot value which can maximize the output, and the gridlock regime never arises. We further validate and perfect SPM using camera surveillance data, and find out MFD of a specific area by simulation analysis. Based on the works we mentioned, we define a novel traffic control theory and method considering the upstream and downstream queues based on SPM, and perimeter control strategies based on MFD. The novel method we proposed here can help design and evaluate arterial control strategy and area regional control strategy more conveniently and efficiently. This meth
英文关键词: Traffic Wave Theory;Macroscopic Fundamental Diagram;Intersection;Queue;Traffic Control