中文摘要：

采用线性Drucker-Prager理想弹塑性模型和时间型指数蠕变速率方程,利用有限元分析软件ABAQUS,分析连续性周期荷载作用下,水泥稳定碎石基层性能劣化过程中荷载作用对层状沥青路面结构受力及变形的影响,并对车轮轴载对路面车辙的影响作了深入分析.结果表明：在沥青面层中非弹性应变最大值变化规律与基层模量下降没有表现出明显的关系;沥青面层变形占总变形的比例最大,中面层对车辙的影响最显著;基层性能劣化使路面抗变形能力显著下降,路面永久变形随着基层模量的下降呈强非线性增长;在基层性能劣化过程中,随着沥青面层永久变形值的增加,沥青层面在路面结构中所占比例逐渐下降;在路面投入使用初期,非弹性变形发展较快,限制重载车辆可以有效减少车辙,为路面车辙控制提供了一定的依据.

英文摘要：

Analysis of asphalt pavement under continuous cycle load was carried out with ABAQUS software to study deformational behavior.The performance degradation of cement-stabilized macadam was considered.Drucker-Prager theory and time-based creep law were applied to asphalt constitutive model.Results show that there is no clear correlation between maximum inelastic strain of asphalt layer and modulus of cement-stabilized macadam layer.Asphalt layer,especially the middle course,has a significant impact on rutting.Decline of basement layer modulus can dramatically weaken the rutting-resistance of the pavement and they are in strong nonlinear relation.Deformation of asphalt layer increases and its proportion to total deflection declines while the basement layer modulus reduces.When the road has just opened to traffic,inelastic deformation develops rapidly.Rutting depth reduces significantly by restricting heavy vehicles during this period.