行道树倒伏对城市道路交通延误的影响  

The impact of fallen roadside trees on urban road traffic delay

作　　者：王宇航 郑益锋 林睿睿 岳小泉 张可欣 WANG Yuhang;ZHENG Yifeng;LIN Ruirui;YUE Xiaoquan;ZHANG Kexin(College of Transportation and Civil Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]福建农林大学交通与土木工程学院,福建福州350002

出　　处：《山东交通学院学报》2024年第3期10-17,共8页Journal of Shandong Jiaotong University

基　　金：福建省社会科学基金项目(FJ2023C038);福建农林大学大学生创新创业训练计划项目(FAFUXMPC20230718001-00120)。

摘　　要：为研究行道树倒伏后对城市道路交通流运行状态的影响,采用软件VISSIM仿真福州市多路段交叉口行道树倒伏后路网交通状态,采用软件MATLAB将交通量代入仿真文件生成交通延误,通过软件EViews拟合分析行道树倒伏长度、倒伏宽度及交通量对不同车道数道路交通延误的影响。结果表明:3个影响因素对三车道和四车道交通延误影响较大,对五车道交通延误影响较小;交通延误随行道树倒伏长度、倒伏宽度、交通量的增大而增大,对交通延误影响程度按从大到小排列依次为行道树倒伏长度、宽度、交通量;三车道道路在行道树倒伏长度为5、6 m时,交通延误对交通量的变化较敏感;行道树倒伏长度和倒伏宽度均较小或均较大时,交通量变化对交通延误的影响较小;不同行道树倒伏宽度下,行道树倒伏长度大于6 m后交通延误明显增大;交通量大于1 500辆/h后行道树倒伏长度、宽度与交通延误的拟合优度趋于稳定,交通量为1800辆/h时,拟合优度为0.982 2,交通量越大,行道树倒伏长度、倒伏宽度与交通延误的拟合效果越好。In order to study the impact of fallen roadside trees on the operational status of urban road traffic,using software VISSIM to simulate the traffic condition at multiple intersections in Fuzhou City after the roadside trees fell,and using software MATLAB to input traffic volume into the simulation file to calculate traffic delays.The effects of the length and width of fallen roadside trees,and traffic volume on traffic delays are fitted and analyzed using software EViews.The results show that the length and width of fallen roadside trees and traffic volume have a significant impact on traffic delays of three-lane and four-lane roads,but have a lesser impact on five-lane roads traffic delays;Traffic delays increase with the length and width of fallen roadside trees and traffic volume,with the impact on traffic delays ranked in descending order as follows:length of fallen trees,width of fallen trees,and traffic volume.For a three-lane road,when the length of the fallen roadside trees is 5 or 6 m,traffic delays are more sensitive to changes in traffic volume.When the lengths and widths of fallen roadside trees are either small or large,the impact of traffic volume changes on traffic delays is minimal.Under different widths of fallen roadside trees,traffic delays significantly increase when the length of fallen trees is greater than 6 m.After the traffic volume exceeds 1500 vehicles per hour,the fitting goodness of fallen tree length,width,and traffic delays tends to stabilize.At a traffic volume of 1800 vehicles per hour,the goodness of fit is 0.9822,and the greater the traffic volume,the better the fit between the length and width of fallen roadside trees and traffic delays.

关 键 词：城市道路 交通延误 行道树倒伏 交通量 

分 类 号：U491[交通运输工程—交通运输规划与管理]