中文摘要：

分析了现行规范中车辙试验方法与路面实际存在的区别,提出在检验重载车辙时降低加载速度,补充开展沥青面层的全厚式车辙试验,在全厚式试件中形成温度梯度的车辙试验改进方法。改进了车辙试验机,提出不同加载速度下车辙试验时长确定方法和动稳定度计算方法,利用改进车辙试验机开展了沥青混合料重载低速车辙试验、均匀温度场与温度梯度下全厚式试件的车辙试验,并基于车辙试验改进方法提出了沥青混合料抗车辙性能评价方法。试验结果表明：加载速度降低2/3将使沥青混合料动稳定度下降50%~70%,全厚式试件动稳定度比表面层沥青混合料动稳定度低20%~50%,这样可充分解释上坡沥青路面产生的车辙现象,车辙试验改进方法可行。

英文摘要：

The difference between laboratory rutting test conditions and actual pavements was analyzed.Rutting test improving methods were proposed,which included reducing loading speed under heavy loading condition,developing full-thickness rutting tests as conventional rutting tests＇ complement,forming thermal gradient in full-thickness rutting samples.Rutting tester was improved,and the testing duration times at different loading speeds and the dynamic stability calculating methods were confirmed.Rutting tests were carried out by using improving rutting tester under different conditions.These tests included asphalt mixture＇s rutting tests under heavy loading and low speed,full-thickness rutting tests under uniform temperature field and under thermal gradient.The anti-rutting performance evaluation method of asphalt mixture was proposed based on the improving methods.Test result shows that dynamic stability of asphalt mixture reduces by 50%-70% when loading speed decreases by 2/3,and the dynamic stability of full-thickness sample is 20%-50% lower than that of surface course asphalt mixture.These can fully explain the rutting disease of asphalt pavement at upgrade section,and the improving methods are feasible.1 tab,3 figs,14 refs.