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大纵坡和长纵坡上坡路段沥青路面车辙比其他路段严重,除重载和高温外,汽车慢速行驶的影响也不容忽视,但各因素的影响程度尚不清楚。该文利用改进的车辙试验机开展了不同温度、不同荷载、不同轮碾速度下沥青混合料的车辙试验。对试验结果的分析表明:各因素对沥青混合料抗车辙性能的影响程度排序为温度>荷载>速度,而且重载和低速的联合能超过高温对车辙的影响;并基于试验数据提出了速度对SMA-13混合料动稳定度的影响方程。
The rutting of asphalt pavement on the uphill slope with large longitudinal slope and long slope is more serious than that of other road sections. In addition to heavy load and high temperature, the impact of slow driving of the vehicle can not be ignored, but the influence of various factors is not clear. In this paper, an improved rutting machine was used to test the rutting of asphalt mixtures at different temperatures, loads and wheel speeds. The analysis of the test results shows that the influence of various factors on the rutting resistance of asphalt mixture ranks as temperature> load> speed, and the combination of heavy load and low speed can exceed the influence of rut on rutting. Based on the experimental data, Influence equation of SMA-13 mixture dynamic stability.