高速公路作业区交通流的运动学波分析

首先回顾了运动学波理论的研究进展,根据高速公路作业区汇合交通流特性,利用运动学波理论建立了高速公路作业区交通流模型。进而对高速公路作业区的交通波动做了理论上的分析,根据瓶颈处上下游的交通需求和供给的不同关系归纳了4种不同情形,以一种最为复杂的情形为例从理论上分析了作业区内激波的动态变化过程,绘出了交通流基本图和车辆轨迹图中的各种激波的示意图。最后以实际算例的形式详细计算了理论分析的结果,并针对结果对高速公路作业区的交通控制策略提出了建议,为高速公路作业区的交通控制奠定了理论基础。

Analysis of Expressway Work Zone Traffic Flow Based on Kinematic Wave Model

On the basis of a review of the development of kinematic wave traffic flow model,the authors propose a kinematic wave based highway work zone traffic flow model after theoretically analyzing the merging traffic flow characteristics at highway work zone.Moreover,four different scenarios are presented according to the relationship between traffic demand and supply of work zone.The shock wave(resolution) of a most complicated scenario is carefully addressed.The traffic flow fundamental diagram and shockwave schematic figures which quantitatively indicate the formation and dissipation of traffic congestion are made therein.Detailed examples are given to inspire the potential application of the proposed methodology in work zone traffic at the end of the paper.This research could establish the(theoretic) base on highway work zone traffic control issues to some extent.