摘要
为研究涉路施工作业区对高速公路交通安全之间相互影响,本文以需要封闭内侧车道的涉路施工合流风险为研究对象,基于改进的涉路施工交通特性下的元胞自动机,选取上游过渡区长度、货车比例、限速值以及交通量等作为仿真参数,对封内车道路段进行交通仿真试验,对路段的追尾冲突和换道冲突进行研究。根据车辆距离碰撞时间(TTC-Time To Collision)和后侵入时间(PET-Post Encroachment Time)在施工区特性下的阈值,并分析4个因素对涉路合流冲突影响程度大小,结果表明不同参数对作业区交通安全的影响依次为:交通量>过渡区长度>限速大小>货车比例;并建立交通冲突风险指数值(M_(tc))与交通量、过渡区长度、限速大小和货车比例的关系模型。研究结果对提高涉路施工封闭内车道交通安全提供相关理论依据,对改进施工区交通组织具有一定的应用价值。
In order to study the interaction between road-related construction areas and highway traffic safety.In the object of research,based on the improved cellular automata under the characteristics of road construction traffic,select the upstream transition area length,truck ratio,speed limit value and traffic volume as the simulation parameters,traffic simulation test of sealed lane sections,and study the collision and lane conflict of sections.According to the threshold value of vehicle distance collision time(TTC-Time To Collision)and rear invasion time(PET-Post Encroachment Time)under the construction area characteristics,and the analysis of the influence degree of four factors,the results show that the effects of different parameters on traffic safety in the operation area are as follows:traffic volume>transition zone length>speed limit>truck ratio.A model of the relationship between the traffic conflict risk index(M_(tc))and the traffic volume,the length of the transition zone,the speed limit and the proportion of trucks was established.The research results provide a theoretical basis for improving the traffic safety of the closed lane in the road construction,and have certain application value for improving the traffic organization in the construction area.
作者
张雪萍
李家儒
蒋瑜阳
李涵沂
高建平
ZHANG Xueping;LI Jiaru;JIANG Yuyang;LI Hanyi;GAO Jianping(Chongqing Jiaotong University,School of Civil Engineering,Chongqing 400074,China;Shenzhen Gray Technology Co,Ltd.,Shenzhen 518100,China;Sichuan Highway Planning,Survey,Design and Research Institute Ltd.,Chengdu 610041,China;Ya an Transportation Construction Group Co.,Ltd.,Ya an Sichuan 625000,China)
出处
《交通工程》
2025年第2期56-63,共8页
Journal of Transportation Engineering
基金
四川省交通运输科技项目(2022-A-7)。
关键词
元胞自动机
施工区
交通仿真
交通冲突
高速公路
cellular automata
construction area
traffic simulation
traffic conflicts
freeway
