發(fā)布時間：2018-11-21 11:23

【摘要】：為了研究濕滑系數(shù)與路面抗滑性能的表征關(guān)系,確定濕滑系數(shù)的應(yīng)用范圍,研究了不同積水深度、不同積雪厚度和不同結(jié)冰厚度惡劣氣象條件下路面濕滑系數(shù)以及路面抗滑性能的變化情況;建立了濕滑系數(shù)與積水深度、積雪厚度及結(jié)冰厚度的關(guān)系曲線,確定了濕滑系數(shù)與摩擦系數(shù)的相關(guān)性。研究結(jié)果表明:濕滑系數(shù)隨著積水深度、積雪厚度及結(jié)冰厚度的增加而逐漸減小,濕滑系數(shù)越大,路面抗滑性能越好;反之,路面抗滑性能越差;實測濕滑系數(shù)的變化范圍為0.80~0.10,并根據(jù)濕滑系數(shù)的變化將路面抗滑性能分為良好、一般、較差和很差共4個等級,從Ⅰ~Ⅳ級路面抗滑性能逐漸降低。驗證了可以采用濕滑系數(shù)來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，

本文編號：2346819