Based on coupling a continuum damage factor,a damage rheological model of asphalt mixture that can describe total creep behavior is presented in this paper. A constitutive equation of the model is established with the viscoelastic characteristics and damage taken into account. Through uniaxial creep experiments under different stress amplitudes, nonlinear fitting program is worked out, the model parameters calibrated, and the curves of damage evolution obtained. The comparison between the model and experiment data shows that the damage rheological model successfully presents the characteristics of the creeping process and the damage critical time under various loading stress ampli-tudes. And the traditional Burgers model prediction is presented for reference.%在三元件黏弹性模型基础上耦合一个连续性损伤因子,构建一个能够描述沥青混合料三阶段蠕变全过程的损伤蠕变模型.综合考虑黏弹性特性与损伤机制,推导了该模型的本构方程,分析了沥青混合料的蠕变特性.通过沥青混合料在不同应力水平下的单轴压缩蠕变实验,编制非线性拟舍程序,得到模型参数和损伤演化曲线.将不同应力条件下模型预测值与实验结果进行对比,结果表明,该模型能准确反映不同应力水平下沥青混合料蠕变过程三个阶段的特征和进入破坏阶段的临界时间.
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