中文摘要：

在常用的各种力学模型中，修正Burgers模型是目前公认相对准确而又简单的模型，然而该模型只对静态荷载下混合料蠕变特性适用，且不能将延迟粘弹性变形与粘性流动变形区分出来，以此进行车辙预估必然导致预估车辙偏大。将修正Burgers模型看成是由三单元范德普（Van Der Poel）模型与修正的外置粘壶组成，就能将永久应变与弹性应变区分开来，更加合理。考虑耦合损伤的修正Burgers模型能反映混合料高温变形的三阶段，且当卸载时间为加载时间的10倍左右时，残余粘弹性变形占不到10％，可以略去不计。推导间歇加载半正矢波下混合料的本构模型，用origin7．5软件进行拟合，相关度0．99以上。最后提出基于耦合损伤力学模型的混合料高温性能评价新指标蠕变度和平均车辙深度。

英文摘要：

In all mechanics models, modified Burgers model is considered relative correct and simple one; however this model is just coincident with static load, so can＇t distinguish the remained viscoelastic strain and viscous flow stain. If modified Burgers model is composed with Van Der Poel model and external visco- pot, remained viscoelastic strain and viscous flow stain can be distinguished. To adopt coupling damage model can describe asphalt mixtures＇ three phases distortion, and if uninstalled time is 10 times as loaded time, remained viscoelastic strain is accounted less than 10 percent of permanent deformation, so can be ig- nored. In interim loaded Haversine, the constitutive model is derived, and using origin7. 5 software to simulate, the correlation coefficient is above at 0. 99. At last two evaluation indexes were put forward （creep degree and AAR） to describe mixtures high temperature performance.