南疆地区高速公路沥青路面抗滑性能衰变特性研究

Study on the decay characteristics of anti sliding performance of expressway asphalt pavement in Southern Xinjiang

为研究新疆南疆地区沥青路面抗滑性能衰变规律,通过现场测试的手段,在2017—2021年期间,对新疆南部地区的部分高速公路的沥青路面采用SCRIM路面横向力系数测试车进行现场观测,并对现场试验数据进行分析。研究发现,由于风积沙的存在,高速公路沥青路面的抗滑性能会发生改变,部分地区抗滑性能衰变速率较快,而有的地区衰变速率相对较缓,但总体高速公路沥青路面抗滑力衰变速度前期比较快,后期相对较缓慢。基于实测数据建立预测模型,可以为新疆地区积沙沥青路面抗滑性能的研究提供一定的指导和参考。

From 2017 to 2021,the asphalt pavement of some expressways in the south of Xinjiang was observed on the spot with the lateral force coefficient test vehicle,and the decay characteristics of the anti sliding performance of the asphalt pavement with time were studied through the measured experimental data.It is found that due to the presence of aeolian sand,the anti-skid performance of expressway asphalt pavement will be changed.It is found that the decay rate of anti-skid performance in some areas is faster,while in some areas the decay rate is relatively slow,but in general,the decay rate of anti-skid performance of Expressway Asphalt Pavement is faster in the early stage and slower in the later stage.Through the discovery and the establishment of the prediction model,it can provide some guidance and reference for the study of the skid resistance of the sand accumulating asphalt pavement in Xinjiang.