对称双环式变形苜蓿叶形互通立交安全性分析  

Safety Analysis of Symmetrical Double-ring Deformed Clover-leaf Interchange

作　　者：李晴晴 张洪宾[1] 孙光辉 韩雨 刘浩杰 LI Qing-qing;ZHANG Hong-bin;SUN Guang-hui;HAN Yu;LIU Hao-jie(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学交通与车辆工程学院,淄博市255000

出　　处：《公路》2025年第2期303-311,共9页Highway

基　　金：山东省自然科学基金项目,项目编号ZR2017LF015。

摘　　要：为了探究车辆在对称双环式变形苜蓿叶形互通立交上行驶时的运行特性,以淄博市原山快速路与鲁泰大道交织段麻营立交为例,利用UC-win/road软件1∶1搭建虚拟驾驶场景,基于模拟驾驶试验采集车辆行驶速度、加速度、方向盘转角数据,研究了车辆在互通立交上行驶时车速的变化规律,采用四分位差法和熵值法确定危险驾驶行为特征参数阈值和评价指标权重,量化了急转方向、急踩踏板2种危险驾驶行为,揭示了对称双环式变形苜蓿叶形互通立交对驾驶行为的影响。结果表明:(1)车辆在互通立交路线中行驶的速度受分合流的影响较大,路线分合流组成形式越复杂,速度变化幅度越大。(2)急转方向危险驾驶行为受道路曲率变化的影响较大,主要发生在匝道内曲率变化较快的位置:环形匝道路径较短,曲率变化最大,为高危险区间,危险系数大于0.43;半直连式左转匝道路径较长,为较高危险区间,危险系数值集中在0.18~0.43;直连式右转匝道危险区间距离短且分布较为分散。(3)急踩踏板危险驾驶行为受分合流的影响较大,主要发生在减速车道路段以及匝道内分合流路段,减速车道路段危险系数最高;匝道路段内分合流路段危险系数较高,危险系数集中在0.15~0.32。In order to explore the operating characteristics of the vehicle when driving on the symmetrical double-ring deformed alfalfa leaf interchange,in the paper,taking the Maying Interchange in the weaving section of Yuanshan Expressway and Lutai Avenue in Zibo City as the research object.The UC-win/road software is used to build a 1:1 virtual driving scene,based on the simulated driving experiment,the vehicle driving speed,acceleration,steering wheel angle data are collected.The change rule of vehicle speed when driving on the interchange is studied.The threshold value of dangerous driving behavior characteristic parameters and the weight of evaluation index are determined by quartile difference method and entropy method.The two dangerous driving behaviors of sharp turn direction and sharp pedal are quantified,and the influence of symmetrical double-ring deformed alfalfa leaf interchange on driving behavior is revealed.The results show that:(1)The speed of the vehicle in the interchange route is greatly affected by the separation and confluence.The more complex the composition of the route is,the greater the speed change is.(2)The dangerous driving behavior in the direction of sharp turn is greatly affected by the change of road curvature,which mainly occurs in the places where the curvature changes rapidly in the ramp.The ring ramp path is shorter,the curvature change is the largest,which is a highrisk interval,and the risk coefficient is greater than O.43.The semi-direct-connected left-turn ramp has a longer path,which is a higher risk interval,and the risk coefficient value is concentrated in O.18~0.43.The distance between the dangerous intervals of the directly connected right-turn ramp is short and the distribution is relatively scattered.(3)The dangerous driving behavior of the stampede is greatly affected by the confluence,which mainly occurs in the deceleration lane section and the confluence section in the ramp.The risk coefficient of deceleration lane section is the highest;the risk coefficient of the mergi

关 键 词：交通安全 互通立交 危险驾驶行为 四分位差法 熵值法 

分 类 号：U412.352[交通运输工程—道路与铁道工程]