高速公路隧道出口至互通入口最小净距研究  

Minimum clearance from highway tunnel exits to interchange entrances

作　　者：宋瑞华 马朝晖 佘明星 刘禹同 潘兵宏[1] SONG Ruihua;MA Zhaohui;SHE Mingxing;LIU Yutong;PAN Binghong(School of Highway,Chang’an University,Xi’an 710064,Shaanxi Province,P.R.China;Poly Changda Engineering Co.Ltd.,Guangzhou 510620,Guangdong Province,P.R.China)

机构地区：[1]长安大学公路学院,陕西西安710064 [2]保利长大工程有限公司,广东广州510620

出　　处：《深圳大学学报（理工版）》2024年第4期444-452,共9页Journal of Shenzhen University(Science and Engineering)

基　　金：河北省重点研发计划资助项目(19275601D);中交科技基金资助项目([2018]05)。

摘　　要：高速公路隧道出口至互通入口路段的净距过小,易导致驾驶员合流时判断决策失误,增加合流区事故风险的发生几率.在深入研究隧道出口至互通入口车辆行驶特点和交通冲突的基础上,分析小净距路段车辆的主要驾驶过程(包含明适应、判断决策、车辆减速或车辆换道),建立隧道出口至互通入口最小净距计算模型.通过该类路段实测交通数据调查分析,对隧道出口路段运行速度及隧道出口明适应时间等小净距计算模型中关键参数进行了标定.在综合考虑车辆运行速度、驾驶员明适应时间、车辆减速特点、车辆换道轨迹及互通入口合流区主线安全视距的基础上,提出基于路段限速的隧道出口至互通入口最小净距建议值,以及基于车道行车安全诱导管控系统的车道限制、车速管控、减轻视觉负荷及加强视线诱导等交通安全保障措施.If the clearance from the exit of a highway tunnel to the entrance of an interchange is too small,it can easily lead to mistakes in judgment and decision-making by drivers when merging,increasing the probability of accidents in the merging area.To address this issue,we conduct the study of the minimum clearance from tunnel exits to interchange entrances on highways.Based on an in-depth analysis of the driving characteristics and traffic conflicts between tunnel exits and interchange entrances,we analyze the main driving processes of vehicles in short clearance sections(including bright adaptation,judgment and decision-making,vehicle deceleration and lane changing),and then establish the calculation model for the minimum clearance between tunnel exits and interchange entrances.Through the investigation and analysis of the measured traffic data from this kind of road sections,key parameters in the small clearance calculation model,such as the running speed near tunnel exits and the explicit adaptation time at the tunnel exit,are calibrated.Finally,by comprehensively considering vehicle running speed,driver's adaptation time,vehicle deceleration characteristics,lane change trajectories and the safe sight distance of the main line in the merging area of interchange entrances,the recommendations for the minimum clear distance from tunnel exits to interchange entrances based on road section speed limits are made.Additionally,a series of traffic safety measures based on the lane driving safety guidance and control system are proposed,including lane restrictions,vehicle speed control,reducing visual load,and strengthening line of sight guidance.

关 键 词：交通工程 高速公路 最小净距 互通 隧道 调查分析 交通安全 

分 类 号：U491[交通运输工程—交通运输规划与管理] U412[交通运输工程—道路与铁道工程]