基于摩擦系数变化的隧道口冰雪环境下路面防滑技术研究  

Research on Road Surface Skid Resistance Technology under Ice and Snow Environment at Tunnel Entrance based on Changes of Friction Coefficient

作　　者：乔建刚 张帅泽 王傑 QIAO Jian-gang;ZHANG Shuai-ze;WANG Jie(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 30040l,China)

机构地区：[1]河北工业大学土木与交通学院,天津市300401

出　　处：《公路》2024年第3期385-392,共8页Highway

基　　金：国家自然科学基金项目,项目编号51108011;河北省交通运输厅科技项目,项目编号YC-201932;安全生产重特大事故防治关键技术科技项目,项目编号Hebei-0009-2017AQ。

摘　　要：为提高山区高速公路冰雪环境下隧道口行车安全和预防交通事故,探究山区高速隧道路段特殊天气和交通环境导致路面摩擦系数在不同天气条件和隧道口不同区段的变化,通过不同工况下路面摩擦系数室内试验,分析各工况下路面摩擦系数的变化规律。根据路面温度和路面环境相对湿度与路面模型系数的相互关系,构建摩擦系数~路面温湿度关系模型,对冰雪环境下不同天气的路面摩擦系数进行预测。研究结果表明:对试验测得不同工况下摩擦系数与所建立的模型计算得到的摩擦系数进行对比,3种路面状况下平均误差分别为9.99%、7.81%和9.88%,总体平均误差小于10%,吻合较好。根据预测结果,确定对于冰雪环境下隧道口路面防滑技术设置区段为距洞口-200 m~+60 m,即将向隧道纵深内部延伸60 m的距离,防滑措施技术建议在设置区段铺筑相变沥青混凝土。In order to facilitate driving safety and prevent traffic accidents at the entrance of highway tunnels in mountainous areas under ice and snow environment,the changes in road friction coefficients at different sections of the tunnel entrance and under different weather conditions caused by the special weather and traffic environment at the entrance of mountain highway tunnels are studied.Through indoor tests,the variation of road friction coefficient under different working conditions is analyzed.Based on the relationship between road temperature,the relative humidity of the pavement environment and the coefficient of the pavement model,a relationship model between friction coefficient and pavement temperature and humidity is established to predict the pavement friction coefficient at different weather conditions under ice and snow conditions.The research results show that compared with the friction coefficient calculated by the established model,the average errors of the friction coefficient measured in the experiment under different working conditions are 9.99%,7.81%,and 9.88%,respectively.Based on the prediction results,it is determined that the skid resistance technology for the tunnel entrance pavement under ice and snow environments should be set at a distance of-200 m to+60 m from the entrance,which is about to penetrate a distance of 60 m inside the tunnel.The anti-skid measures are proposed to lay phase change asphalt concrete in the set section.

关 键 词：山区高速公路 路面摩擦系数 冰雪环境 隧道口 关系模型 

分 类 号：U491.254[交通运输工程—交通运输规划与管理] X951[交通运输工程—道路与铁道工程]