新元高速施工期双向4车道的混合流仿真研究  

A Simulation Study on Mixed Flow of Two-way Four Lanes During Construction of Xinyuan Expressway

作　　者：蒲刚 唐志耀 曹洁楠 王宝杰[2] 罗京[1] PU Gang;TANG Zhiyao;CUI Jienan;WANG Baojie;LUO Jing(CCCC First Highway Consultants Co.,Ltd.,Xi'an Shaanxi 710075,China;Chang'an University,Xi'an Shaanxi 710064,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710075 [2]长安大学,陕西西安710064

出　　处：《交通节能与环保》2023年第6期29-34,共6页Transport Energy Conservation & Environmental Protection

基　　金：国家自然科学基金项目(51908060)。

摘　　要：新元高速目前承担较大的交通负荷导致服务水平较差与拥堵频发,需进行改扩建。在施工过程中,为降低客货混行对交通流通行效率的影响,采用微观仿真手段模拟施工期间客货运车辆通行场景,掌握交通运行特征,为施工期交通组织方案的制定提供理论依据。基于元胞自动机模型理论与Matlab语言,建立基于新元高速施工期现状地面层的双向四车道基本路段模型,仿真分析货车对交通流在时空运行、流量、平均速度与平均车辆换道次数等指标的影响规律,并分析在对车道实行功能进行划分时对交通流的影响,提出对新元高速施工期现状地面保通方案的管理建议。Xinyuan Expressway currently bears a relatively large traffic load,resulting in poor service levels and frequent congestion,and needs to be modified and expanded.During the construction process,in order to reduce the impact of mixed passenger and freight traffic on the efficiency of traffic flow.Using micro simulation methods to simulate the traffic scenarios of passenger and freight vehicles during the construction period,grasp the characteristics of traffic operation,and provide theoretical basis for the formulation of traffic organization plans during the construction period.Based on the cellular automata model theory and Matlab language,a two-way four-lane basic road section model based on the current ground-level during the construction period of Xinyuan Expressway is established,the influence of trucks on the traffic flow in time and space,flow,average speed and average number of lane changes is analyzed.At the same time,the impact on traffic flow is analyzed when the lanes are divided into functions.Through the conclusion,the management suggestions for the current ground-level traffic-ensured plan during the construction period of Xinyuan Expressway are put forward.

关 键 词：交通仿真 元胞自动机 新元高速 混行交通流 

分 类 号：U491.113[交通运输工程—交通运输规划与管理]