沥青稳定基层疲劳试验荷载控制模式选择

Choice of the Load Controlling Mode of Asphalt Stabilized Base Course Fatigue Test

研究何种疲劳试验方法更符合沥青稳定基层混合料的疲劳特性。首先分析全厚式沥青路面的沥青稳定基层疲劳时的应力应变状态 ,及这种应力应变状态与疲劳试验的荷载控制模式的关系 ;其次 ,分析应变控制的疲劳试验结果的实用性 ;最后 ,提出一种简便易行的应变控制模式的实现方法。研究表明 ,全厚式沥青路面结构中 ,沥青稳定基层的应力应变状态更接近于应变控制模式疲劳试验的工作状态 ,因此 。

The asphalt stabilized base course, a different kind of base course, has been used widely in other countries In this paper, firstly, the relation of its stress and strain state with load controlling mode of fatigue test when it was being fatigued was analyzed Secondly, two merits of strain?controlling mode were studied In addition, a convenient method to realize strain?controlling mode was put forward It is shown that strain?controlling mode is adequate for asphalt mixtures of asphalt stabilized base course as for fatigue test.