为了解长大纵坡饱和沥青路面的水损害机理，基于Biot 固结理论和多雨地区长大纵坡的特 点，建立了在移动荷载作用下长大纵坡饱和沥青路面“面层-基层-路基”二维三层体系水力耦合 模型和水力耦合控制方程，在面层底部为完全排水边界条件下全面系统地分析了车辆荷载、荷载 移动速度和纵坡坡度对面层中正应力、孔隙水压力、剪应力和面层位移等物理量分布的影响，为 长大纵坡沥青路面结构设计提供理论基础和参考。结果表明：车辆荷载和荷载移动速度对面层中 正应力、孔隙水压力、剪应力和面层位移产生显著影响，而纵坡坡度对面层中正应力、孔隙水压 力、剪应力和面层位移几乎不产生影响。

In order to reveal the mechanism of water-induced damage to longitudinal slope saturated as⁃ phalt pavement, based on the Biot Consolidation Theory and characteristics of the longitudinal slope in rainy regions, the hydro-mechanical coupled mode and hydro-mechanical coupled governing equations with two-dimensional three-layer system of "Surface-Base-Subgrade" of saturated asphalt pavement be⁃ ing subject to moving traffic loads were established. With the boundary condition that the bottom of the surface could completely drain, the influence of vehicle load, driving speed and longitudinal slope on dis⁃ tribution of normal stress, pore-water pressure, shear stress, surface course displacement and other phys⁃ ical quantities were analyzed comprehensively and systematically, offering the theoretical foundation and reference to the design of longitudinal slope asphalt pavement structure. The results show that the vehi⁃ cle load and moving traffic loads speed have significant influence on the normal stress, pore water pres⁃ sure, shear stress and surface displacement, and the longitudinal slope has almost no impact on the nor⁃mal stress and pore water pressure, shear stress and surface displacement.