通过相同条件下一组大样本沥青混合料应变控制小梁弯曲疲劳试验,将弯曲疲劳循环次数和对应循环次数的模量无量纲化后,拟合得到了一组疲劳损伤和对应循环次数比的关系曲线,发现各曲线之间非常相似,尽管各试件的疲劳寿命相差较大。对曲线族进一步分析,归纳得到了此沥青混合料疲劳损伤的非线性演化的统一模型。 Through a series of large samples of asphalt mixture under the same conditions of strain control beam bending fatigue test, bending fatigue cycles and the number of cycles corresponding to the number of non-dimensional model fitted to obtain a group of fatigue damage and the corresponding cycle times ratio The relationship curves show that the curves are very similar, although the fatigue life of each specimen is quite different. The curve family is further analyzed, and a unified model of nonlinear evolution of the asphalt mixture fatigue damage is obtained.