沥青层模量累积疲劳损伤衰减的试验研究(英文)

Experimental Study on Modulus Degradation of Asphalt Layer due to Cumulative Fatigue Damage

在加速加载试验过程中,采用落锤式弯沉仪测量不同轴载作用次数下路面弯沉,反算沥青层模量,得到路面整个寿命周期的沥青层模量衰减模型。结果表明,累积疲劳损伤下,沥青层模量与加载作用在半对数坐标成线性相关。

Falling weight deflectometer was used tomeasure the deflection ALF axle loading in accelerated loading test. Back-calculated the modulus of of surface pavement under different asphalt layer, determined the reduction in modulus of the asphalt layer during the whole life of pavement are presented. The result shows a linear relationship between asphalt layer modulus and cumulative fatigue damage plotted on semilog scales.