基于三维宏观基本图的城市机非混行交通研究  

Urban mixed traffic flow model based on 3D macroscopic fundamental diagram

作　　者：江航 杨光 邱皓 顾文钊 JIANG Hang;YANG Guang;QIU Hao;GU Wenzhao(College of Vehicle and Traffic Engineering,Henan University of Science&Technology,Luoyang 471000,China;Jiangsu Zhongshe Co.,Ltd.,Wuxi 214125,China)

机构地区：[1]河南科技大学车辆与交通工程学院,河南洛阳471000 [2]江苏中设集团股份有限公司,江苏无锡214125

出　　处：《交通科学与工程》2024年第1期116-126,共11页Journal of Transport Science and Engineering

基　　金：河南省科技攻关计划项目(212102310040);河南省高等学校重点科研项目(21A580003)。

摘　　要：为解决城市交通中机动车与非机动车混合行驶造成的交通拥堵,提出一种三维宏观基本图的理论分析方法,探究机动车与非机动车混行交通流的微观运行特征和宏观演化规律,揭示在非机动车干扰下交通拥堵的形成、传播和消散机理。先分别建立描述非机动车流的元胞自动机模型和机动车流的元胞传输模型,并借助非机动车越线次数函数将两个模型耦合;然后,在Simulink仿真平台上,运行该耦合模型以求得路网的三维宏观基本图,并以此分析非机动车驶入流量与路网平均流量、冲突次数三者间的相互关系;最后,提出提高路网硬隔离占比和加大非机动车道宽度的两种方法,借助三维宏观基本图来验证其缓解交通拥堵的效果。研究结果表明:三维宏观基本图的分析方法可量化机动车和非机动车冲突的影响,指导混行交通拥堵的治理,该结论为改善中国城市交通出行秩序和出行环境提供了参考。Mixed Vehicle-bicycle flow is a typical feature of urban traffic.Vehicles are frequently interfered by Bicycles will lead to increased delays in vehicle travel,reduced Vehicle speed of traffic flow,and decreased the accumulation of vehicles on local roads.In this paper,a theoretical analysis method of 3D-Macroscopic Fundamental Diagram is proposed to explore the microscopic operation characteristics and macroscopic evolution law of mixed traffic flow.Firstly,a cellular automaton model describing the bicycle traffic flow and a cellular transmission model describing the vehicle traffic flow are established respectively.Then,the Simulink simulation platform was built and the coupled model was run to obtain the 3D-Macroscopic Fundamental Diagram of the road network.Finally,two methods were designed to improve the proportion of isolation in the road network and to increase the width of bicycle lanes The results show that the 3D-Macroscopic Fundamental Diagram can quantify the impact of conflict,guide the governance of mixed traffic congestion,and provide technical support for improving the travel order and environment of urban traffic.

关 键 词：混合交通流 元胞自动机模型 元胞传输模型 三维宏观基本图 

分 类 号：U491[交通运输工程—交通运输规划与管理]