不同当量轴载作用下结冰路面抗滑性能变化规律研究

Research on Change Law of Anti-skid Performance of Frozen Pavement under Different Equivalent Axle Loads

路面抗滑性能受路面水环境影响巨大,不同的交通荷载也会对抗滑产生影响,开展不同当量轴载作用下结冰路面抗滑性能变化规律研究意义重大。通过在交通部公路交通试验场开展实车实验,研究了不同路段、不同当量轴载作用次数与不同结冰厚度条件下,路面摆值变化的规律,厚冰层表面温度与摆值的关系,以及室内实验和室外实验结果对比。结果表明:厚冰层表面温度每上升1℃,路面摆值将下降0.87BPN。由于受试验条件限制,不同轴载作用下结冰路面抗滑测试数据未能呈现明显的变化规律。

The anti-skid performance of pavement is greatly affected by the water environment of the pavement.The different traffic loads can also have an impact on anti-skid performance.It is meaningful to study the variation law of anti-skid performance of frozen pavement under the different equivalent axle loads.Through the real vehicle experiments in the highway traffic test site of the Ministry of Transport,the law of pavement pendulum value change,and the relationship between the thick ice layer surface temperature and the pendulum value under the different road sections,different equivalent axle load times and different ice thickness conditions are studied,and the results of the laboratory experiment and the outdoor experiment are compared.The results show that for every 1 increase in surface temperature of the thick ice layer,the pavement pendulum value will decrease by 0.87BPN.Due to limitations in experimental conditions,the anti-slip test data of frozen pavement under different axle loads fails to show a significant change law.