恶劣气象条件对路面湿滑系数的影响研究
发布时间：2018-11-21 11:23
【摘要】：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。
[Abstract]:In order to study the relationship between the wet slip coefficient and the pavement anti-skid performance, and determine the application range of the wet slip coefficient, the different water accumulation depth was studied. The variation of pavement wet slip coefficient and pavement anti-skid performance under bad weather conditions with different snow thickness and different icing thickness; The relationship curve between wet slip coefficient and water depth, snow cover thickness and ice thickness is established, and the correlation between wet slip coefficient and friction coefficient is determined. The results show that the wet slip coefficient decreases with the increase of the depth of water, the thickness of snow and the thickness of ice. The greater the coefficient of wet slip is, the better the anti-skid performance of pavement is, whereas, the worse the anti-skid performance of pavement is. The range of the measured wet slip coefficient is 0.80 ~ 0.10. According to the variation of the wet slip coefficient, the pavement anti-skid performance is divided into 4 grades: good, general, poor and poor, and the anti-skid performance of grade 鈪，
本文编号：2346819
[Abstract]:In order to study the relationship between the wet slip coefficient and the pavement anti-skid performance, and determine the application range of the wet slip coefficient, the different water accumulation depth was studied. The variation of pavement wet slip coefficient and pavement anti-skid performance under bad weather conditions with different snow thickness and different icing thickness; The relationship curve between wet slip coefficient and water depth, snow cover thickness and ice thickness is established, and the correlation between wet slip coefficient and friction coefficient is determined. The results show that the wet slip coefficient decreases with the increase of the depth of water, the thickness of snow and the thickness of ice. The greater the coefficient of wet slip is, the better the anti-skid performance of pavement is, whereas, the worse the anti-skid performance of pavement is. The range of the measured wet slip coefficient is 0.80 ~ 0.10. According to the variation of the wet slip coefficient, the pavement anti-skid performance is divided into 4 grades: good, general, poor and poor, and the anti-skid performance of grade 鈪，
本文编号：2346819
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