基于可靠度的公路隧道进出口段行车安全分析  

Analysis on Driving Safety at Entrance and Exit of the Highway Tunnel based on Reliability

作　　者：张航[1] 张竞宇 吕能超[2] 马宇康 ZHANG Hang;ZHANG Jing-yu;LYUNeng-chao;MA Yu-kang(School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China;Intelligent Transport Systems Center,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉市430063 [2]武汉理工大学智能交通系统研究中心,武汉市430063

出　　处：《公路》2023年第4期238-245,共8页Highway

基　　金：国家自然科学基金项目,项目编号51678460。

摘　　要：为了提高隧道进出口路段的行车安全水平,以现行公路工程结构可靠度设计统一标准为依据,对隧道进出口路段失效概率进行了定义。以车辆轨迹偏移量和驾驶人视距作为约束条件,建立隧道进出口路段的功能函数并推导可靠性模型,提出了隧道进出口路段可靠性计算模型的求解方法,并对隧道进出口段的停车视距模型进行修正。以贵州某隧道为例,计算了隧道进出口处的行车失效概率,并对各影响因素的敏感性进行分析。结果表明:可靠性指标可以定量反映隧道进出口处的线形一致性和视距安全性,保证线形指标不仅满足规范设计,而且能明确反映道路交通安全水平;敏感性分析反映了各因素对行车安全性的影响程度,其中运行速度和曲线半径对隧道进出口段的失效概率影响最大,为隧道前期路线设计和后期运营限速提供参考。In order to improve the driving safety level at the tunnel entrance and exit sections,the failure probability of the tunnel inlet and outlet sections is defined on the basis of the unified standards for the structural reliability design of the current highway engineering.Taking the vehicle trajectory offset and the driver's visual distance as the constraints,the performance function of the tunnel entrance and exit section is established and the reliability model is derived,the solution method of the reliability calculation model of the tunnel inlet and outlet section is proposed,and the parking line-of-sight model of the tunnel inlet and outlet section is modified.Taking a tunnel project in Guizhou as an example,the driving failure probability at the entrance and exit of the tunnel is calculated,and the sensitivity of each influencing factor is analyzed.The results show that the reliability index can quantitatively reflect the linear consistency and visual distance safety at the entrance and exit of the tunnel,and ensure that the linear index design not only meets the specification,but also clearly reflects the road traffic safety level;the sensitivity analysis reflects the degree of influence of various factors on driving safety,of which the running speed and curve radius have the greatest impact on the failure probability of the tunnel inlet and outlet sections,which provides some reference for the preliminary design of tunnel and the speed limit in operation phase.

关 键 词：道路工程 运行安全 可靠性设计 隧道进出口 停车视距 线形一致性 

分 类 号：U412.3[交通运输工程—道路与铁道工程]