中文摘要：

为了对沥青路面内的动水压力进行研究，基于Biot团结方程，将沥青混和料看作多孔介质，并考虑了它和水体的惯性力及两者之间的耦合作用，对饱水沥青路面进行了快速Lagrange有限差分分析．结果表明，水压的产生和消散在轮载作用过程中同时存在，导致面层内正负水压力及渗透力随时间交替出现，这证实了水损坏过程中的水力反复泵吸作用．动孔隙水压力随车速的增大而增大，而且由于水压力的存在路面弯沉和面层内的有效应力减小了，但水对沥青膜的乳化和置换作用加强了．动水压力的最大值出现在面层底部，所以建议在面层底部设一排水层，将排水状态由单面排水变为双面排水，将有效抑止水损坏的发生．

英文摘要：

Based on fast Lagrangian finite difference method and the Biot consolidation theory considering the inertia force of asphalt concrete and water, a dynamic coupled fluid-solid analysis of the pavement was put folth with asphalt mixtures as porous medium for studying the dynamic water pressure in asphalt pavement. The results show that the development and dissipation of dynamic pore water pressure are coinstantaneous, which makes the plus and minus pore water pressure and seepage force both alternate with time. The process of repetitive hydrodynamic pumping and sucking during water-induced damage was proved. The dynamie pore water pressure increases with vehicle velocity increase. The effective stress and the deflection of pavement all decrease due to dynamic pore water pressure. However, the emulsification and replacement of the asphalt membrane is accelerated by water. The maximum dynamic pore water pressure occurs at the bottom of the surface layer, which suggesting that a drain layer should be set up to change the drainage condition from a single-sided drain to a two-sided drain, and the water-induced damage can be decelerated effectively.