山区高桥隧比隧道段路面抗滑性能分析

为分析影响山区高速公路高桥隧比路段的路面抗滑性能影响因素与特性,从路面摩擦产生机理、路面抗滑性能影响因素和路面抗滑性能降低后对交通安全产生的影响等方面进行分析;根据对高速高桥隧比路段的隧道段路面技术状况进行调查与测量,分别从路面抗滑性能连续变化趋势、不同类型隧道抗滑性能特性和隧道路段路面抗滑性能特性方面做趋势图;对比了短、中、长与特长隧道路面抗滑性能的变化趋势稳定程度。结果表明:路面磨耗、路面污染和路面潮湿三个因素是使高桥隧比路段路面抗滑性能下降的主要因素。隧道群路段较普通路段路面抗滑性能较差,隧道群中不同隧道的路面抗滑性能差异较大,隧道与隧道连接段可能存在路面抗滑性能突变的现象,不利于行车安全。

Analysis of pavement anti-sliding performance in tunnal section of mountain highway with high bridge-tunnel ratio

For the purpose of analyzing the influencing factors and characteristics of the skid resistance on the high bridge and tunnel ratio sections of the highway in mountains, this paper analyze the mechanism of road friction, the factors influencing the skid resistance of the road surface, and the impact on traffic safety after the skid resistance of the road surface is reduced. According to the survey and measurement of the technical conditions of the high bridge and tunnel ratio sections of the highway, the trends of the continuous skid resistance of the road surface, the skid resistance of different types of tunnels and the skid resistance of the road sections of the tunnel sections are plotted. The stability of the skid resistance of the short, medium, long and long tunnels was compared. The results show that the three factors of road wear, road surface pollution and road surface wetness are the main factors that reduce the skid resistance of the road section. The road surface of the tunnel group is poorer than that of ordinary road sections, and the road surface of different tunnels in the tunnel group is poor. The difference in skid resistance is great. There may be abrupt changes in the anti-sliding performance of the road between the tunnel and the tunnel, which is detrimental to driving safety.