中文摘要：

沥青混合料是典型的粘弹性材料，广义Maxwell粘弹性模型能很好地描述沥青混合料的变形规律．文中通过拟合AC-13C基质、改性沥青混合料的静载蠕变试验数据获得广义Maxwell模型的Prony系列系数，采用加载0．1s、卸载0．9S的半正弦波间歇荷载模拟路面实际的车辆荷载，对重复荷载作用下的沥青混合料进行粘弹性有限元分析，预测出重复荷载作用下AC-13C基质、改性沥青混合料的变形，与实测变形相比具有很好的一致性．粘弹性有限元方法预测出的应变包括弹性应变和蠕变应变，而蠕变应变直接导致永久变形的产生，通过分析蠕变应变可以判别沥青混合料的弹性恢复能力．

英文摘要：

Asphalt mixture is a typical viscoelastic material, whose deformation law can be well described using the generalized Maxwell viscoelastic model. In this paper, the Prony series coefficients of the generalized Maxwell model are obtained by fitting the results of static creep test of AC-13C unmodified and modified asphalt mixtures. Then, a half-sinusoids load with 0.1 s loading duration and 0. 9 s unloading duration is used to simulate the dynamic vehicle load on the pavement. Moreover, the asphalt mixtures under repeated loads are analyzed by means of the viscoelastic finite element method, and the corresponding deformation consisting of both elastic strain and creep strain are predicted, with the results according well with the measured ones. As the creep strain leads directly to permanent deformation of asphalt mixtures, it is feasible to determine the elastic resilience of asphalt mixtures according to the creep strain.