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提出了一种分析饱和土坝动力反应的方法，考虑了土坝的两相介质特性。在固液耦联动力方程的基础上，选取固相位移、液相位移、孔隙水压作为场变量，采用伽辽金加权残敌法进行有限元空间离散化，然后在时域上采用Ｗｉｌｓｏｎ－θ法进行逐步积分。该方法不仅能计算出固相位移和液相位移，而且能直接得到孔隙水压的反应过程。文中以一饱和土坝模型进行算例分析，并与将其作为单相介质时的结果进行了比较。该法可用于分析饱和介质的地震反应。
A method for analyzing the dynamic response of a saturated earth dam is proposed, taking into account the characteristics of the two-phase medium of the earth dam. Based on the solid-liquid coupled dynamic equations, solid phase displacement, liquid phase displacement, and pore water pressure are selected as field variables. The Galerkin-weighted residual enemy method is used to perform finite element spatial discretization. Then Wilson-θ is used in the time domain. The law is gradually integrated. This method can not only calculate the solid-phase displacement and liquid-phase displacement, but also directly obtain the pore water pressure reaction process. An example of a saturated earth dam model was used for the analysis and compared with the results obtained when using it as a single-phase medium. This method can be used to analyze the seismic response of saturated media.