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为了研究湿滑系数与路面抗滑性能的表征关系,确定湿滑系数的应用范围,研究了不同积水深度、不同积雪厚度和不同结冰厚度恶劣气象条件下路面湿滑系数以及路面抗滑性能的变化情况;建立了湿滑系数与积水深度、积雪厚度及结冰厚度的关系曲线,确定了湿滑系数与摩擦系数的相关性。研究结果表明:湿滑系数随着积水深度、积雪厚度及结冰厚度的增加而逐渐减小,湿滑系数越大,路面抗滑性能越好;反之,路面抗滑性能越差;实测湿滑系数的变化范围为0.80~0.10,并根据湿滑系数的变化将路面抗滑性能分为良好、一般、较差和很差共4个等级,从Ⅰ~Ⅳ级路面抗滑性能逐渐降低。验证了可以采用湿滑系数来表征路面抗滑性能的可行性。
In order to study the relationship between the slipperiness coefficient and the performance of the pavement slip resistance and determine the application range of the slip coefficient, the pavement wet sliding coefficient and the pavement slip resistance under different water depth, different snow thickness and different icing conditions The relationship between the coefficient of wetting and the coefficient of friction was established. The relationship between the coefficient of wetting and the depth of the water, the thickness of the snow and the thickness of the ice were established. The results show that the coefficient of wet sliding decreases with the increase of water depth, thickness of snow and ice thickness. The larger the coefficient of wet sliding, the better the anti-slip performance of the pavement; on the contrary, the worse the anti-slip performance of the pavement; The slip coefficient ranged from 0.80 to 0.10. According to the change of wet sliding coefficient, the slip resistance of pavement was divided into four grades: good, fair, poor and poor. The slip resistance of Ⅰ ~ Ⅳ grade pavement was gradually reduced . The feasibility of using the wet slip coefficient to characterize the anti-skid performance of the pavement is verified.