摘要
为研究立交桥出口匝道的行车安全性,以模拟驾驶实验为手段,利用Uc-win/Road软件构建出口匝道三维道路场景模型,对7名驾驶员在三维道路上进行模拟驾驶行车数据采集。把采集的行车速度、横向加速度、纵向加速度等参数进行运行特性分析。运用速度一致性原理对出口匝道特征点运行速度值进行分析,发现|ΔV85|大部分小于10 km·h^(-1),出口匝道线形具有良好的舒适性。同时运用加速度变化率法对出口匝道进行安全性分析,得到出口匝道特征点横向加速度变化率在安全性与舒适性αh≤0. 6 m·s^(-3)的要求内。最终为立交桥出口匝道安全性研究提出一种新的思路。
In order to research the traffic safety of the exit ramp of the overpass,by means of simulation driving experiment and Uc-win/Road software to build three-dimensional road scene model of export ramp,the driving data of seven drivers were simulated on the three-dimensional road.The operating characteristics of the parameters,such as speed,lateral acceleration and longitudinal acceleration are analyzed.Based on the principle of speed consistency,the velocity value of the characteristic of the exit ramp is analyzed.It is found that|ΔV 85|mostly are less than 10 km/h,so that the line of export ramp has good comfort.At the same time,using the rate of change of acceleration method on the safety analysis of the exit ramp,it is found that the lateral change of acceleration ramp rate of feature points in the safety and comfort requirements in less than 0.6 m/s^3.A new way to research the traffic safety of the exit ramp of the overpass was proposed.
作者
乔建刚
刘轲
李瑞
QIAO Jian-gang;LIU Ke;LI Rui(Tianjin Traffic Engineering Green Materials Technology Research Center,School of Civil Engineering, Hebei University of Technology,Tianjin 300401,China)
出处
《科学技术与工程》
北大核心
2018年第33期244-248,共5页
Science Technology and Engineering
基金
国家自然科学基金(51275152)
山西省交通运输厅科技项目(2014-1-18)资助.
关键词
出口匝道
模拟驾驶
安全
速度一致性
加速度
exit ramp
simulated driving
safety
speed consistency
acceleration
