积雪条件隧道进出口路面抗滑性能与路面温度研究  

Investigation on Pavement Anti-slide Performance and Pavement Temperature of Tunnel Entrance and Exit under Snowy Circumstance

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,上海市200092 [2]上海师范大学建筑工程学院,上海市201418

出　　处：《城市道桥与防洪》2024年第9期206-210,M0019,M0020,共7页Urban Roads Bridges & Flood Control

摘　　要：为了确定隧道进出口路面积雪条件下的路面抗滑性能变化规律,采用摆式仪测量了自然降雪过程中恒山隧道和抢风岭隧道进出口间隔25m的摆值;采用红外测温仪采集了晴天且路面干燥时2座隧道间隔10m的路面温度。分析结果表明:隧道进出口呈现融化雪路面、松散雪路面和压实雪路面3种状态,3种路面的摆值依次降低;隧道进口的摆值波动幅度和范围均超过了隧道出口,隧道进口的摆值波动范围为洞口内50m至洞口外170m,隧道出口的摆值波动范围为洞口至洞口外25m;隧道内路面温度低于路基段,隧道进出口路面存在明显的温度降低震荡。由此可知,隧道进口的压实雪路面主要是由于进口处温度降低引起的,隧道出口摆值变化与路面温度关系不显著。所作研究可以为降雪条件下隧道进出口事故的预防和预警提供技术支撑。In order to determine the variation law of the anti-slide performance of the pavement under the condition of snow at the entrance and exit of the tunnel,the pendulum value of the 25 m interval between the entrance and exit of the Hengshan Tunnel and the Baofengling Tunnel during the natural snowfall process is measured by pendulum instrument.And the pavement temperature of the two tunnels at an interval of 10 m is collected by infrared thermometer when the pavement is dry in sunny days.The analysis results show that the tunnel entrance and exit show three states of melted snow pavement,floating snow pavement and compacted snow pavement.The pendulum values of the three pavements decrease sequentially.The pendulum value fluctuation range of the tunnel entrance exceeds the tunnel exit.The pendulum value fluctuation range of tunnel entrance is 50 m inside the entrance to 170 m outside the entrance.The pendulum value fluctuation range of tunnel exit is 25m from the tunnel exit to the outside of the exit.The pavement temperature in the tunnel is lower than that of the subgrade section,and there is an obvious temperature reduction shock on the pavement at the entrance and exit of the tunnel.It can be seen from this that the compaction snow pavement of the tunnel entrance is mainly caused by the temperature reduction at the entrance.There is no significant relationship between the change of tunnel exit pendulum value and pavement temperature.The study can provide the technical support for the prevention and early warning of tunnel entrance and exit accidents under snowfall conditions.

关 键 词：隧道进出口 积雪条件 抗滑性能 路面状态 路面温度 

分 类 号：U411[交通运输工程—道路与铁道工程]