公路养护作业区逐级限速控制研究  

Step-by-step Speed Limit Control in Maintenance Work Zone of Highways

作　　者：吴胜坤 朱文兵 杨静 宋学文[2] 武精科 程永振 WU Sheng-kun;ZHU Wen-bing;YANG Jing;SONG Xue-wen;WU Jing-ke;CHENG Yong-zhen(Jiangsu Suqian Traffic Engineering Construction Co.Ltd.,Suqian Jiangsu 223899,China;Suqian Transportation Bureau,Suqian Jiangsu 223999,China;Faculty of Architecture and Civil Engineering,Huaiyin Institute of Technology,Huai'an Jiangsu 223001,China)

机构地区：[1]江苏宿迁交通工程建设有限公司,江苏宿迁223899 [2]宿迁市交通运输局,江苏宿迁223999 [3]淮阴工学院建筑工程学院,江苏淮安223001

出　　处：《淮阴工学院学报》2022年第3期14-19,共6页Journal of Huaiyin Institute of Technology

基　　金：江苏省333高层次人才培养工程(BRA2020240);宿迁市交通运输局科技与成果转化项目(Sqjt2020-10)。

摘　　要：为了确定不同设计速度公路养护作业控制区最终限速值和分阶限速方案,建立了警告区、上游过渡区和缓冲区的仿真模型,得到了车辆运行速度随着运行距离的分布规律,研究了最终限速值和分阶限速对运行速度标准差稳定系数Devs和冲突率影响。结果表明:一阶限速最终限速值较小时易造成限速区交通拥堵,高阶限速有利于车速平稳下降,警告区Devs震荡幅度减小,冲突率降低。但是当设计速度较低时,高阶限速造成车速变化频次上升,Devs震幅和冲突率反而上升。设计速度100 km/h和80 km/h公路养护作业区宜采用三阶限速,最终限速值分别取60 km/h和50 km/h;而设计速度60 km/h和40 km/h公路养护作业区宜采用一阶限速,最终限速值分别取40 km/h和30 km/h。In order to determine the final speed limit value and hierarchical speed limit scheme in maintenance work area of highway with different design speeds,the simulation models of advance warn⁃ing area,upstream transition area and buffer area were established,the distribution law of vehicle run⁃ning speed with running distance was obtained,and the effects of final speed limit value and hierarchi⁃cal speed limit on the variation of stability coefficient of speed standard deviation(Devs)and conflict rate were studied.The results show that when the final speed limit value of the first-order speed limit is small,it is easy to cause traffic congestion in the speed limit area.The high-order speed limit is conducive to the steady decline of vehicle speed and the decrease of Devs and conflict rate in ad⁃vance warning area.However,when the design speed is low,the high-order speed limit increases the fre⁃quency of speed change,and the Devs amplitude and conflict rate increase instead.The third-order speed limit should be adopted in the maintenance work area of highway with the design speed of 100km/h and 80km/h,and the final speed limit values are 60 km/h and 50 km/h respectively;The first-order speed limit should be adopted in the maintenance work area of highway with the design speed of 60 km/h and 40 km/h,and the final speed limit values are 40 km/h and 30 km/h respectively.

关 键 词：养护作业区 DEVS 冲突率 分阶限速 最终限速 

分 类 号：U418.2[交通运输工程—道路与铁道工程]