隧道及进出口抗滑性能空间演变规律特征  

Characteristics of Spatial Evolution of Skid Resistance at Tunnel Entrances and Exits

作　　者：温学钧 宋灿灿 黄岩 东阳 WEN Xuejun;SONG Cancan;HUANG Yan;DONG Yang

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092 [2]上海师范大学建筑工程学院,上海201418

出　　处：《上海公路》2024年第2期25-29,I0010,共6页Shanghai Highways

基　　金：上海市科委项目(21DZ1201200)。

摘　　要：为揭示隧道进出口抗滑性能的空间变化规律,现采用摆式仪与路面构造深度仪,通过现场实验的方法,分别采集了水头特长隧道、西浮图特长隧道、韩信岭长隧道、燕家岭中隧道、陈家山短隧的进出口摆值与构造深度。数据分析结果表明,隧道进口的摆值减小值明显大于隧道出口,说明隧道进口的减速行为对路面抗滑性能的影响更大;隧道进口摆值降低的终点为洞外50 m,超车道的摆值明显低于行车道,表明速度对摩擦因数的影响比载重大;隧道出口摆值降低的起点为洞门外30 m。此外,短隧道的路面抗滑性能沿隧道长度方向保持稳定,中隧道与长隧道的路面抗滑性能沿隧道长度方向呈平稳-下降-上升-平稳的变化规律。To reveal the spatial variation patterns of skid resistance at tunnel entrances and exits,this study employed a pendulum apparatus and a laser texture depth meter.Field experiments were conducted to collect the pendulum values and texture depths at the entrances and exits of various tunnels,including Shuitou Extra-long Tunnel,Xifutu Extra-long Tunnel,Hanxinling Long Tunnel,Yanjialing Medium Tunnel,and Chenjiashan Short Tunnel.The data analysis indicates that the decrease in pendulum values at tunnel entrances is significantly greater than at the exits,suggesting that deceleration behavior at the entrances has a more substantial impact on pavement skid resistance.The endpoint of reduced pendulum values at tunnel entrances is 50 meters outside the tunnel,and the values in overtaking lanes are significantly lower than those in driving lanes,indicating that speed has a greater impact on the friction coefficient than load.The reduction in pendulum values begins 30 meters outside the tunnel exit.The pavement skid resistance in short tunnels remains stable along the tunnel length,while in medium and long tunnels,it follows a pattern of stable-decreasing-increasing-stable changes.

关 键 词：交通安全 隧道路段 进出口 抗滑性能 摆式仪 激光构造深度仪 

分 类 号：U453.1[建筑科学—桥梁与隧道工程] U492.8[交通运输工程—道路与铁道工程]