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本文将地震孔隙水压力与土坝(尾矿坝)的变形和固结紧结合起来,引用著名的皮奥(Biot)方程,用空间等参数有限单元法求解位移和残余孔隙水压力;提出了一种用于土坝动力分析的非线性三维有效应力分析力法。该法不仅可计算地震动应力、动应变、加速度,而且可以计算地震期间和地震后孔隙水压力的增长、扩散、消散、液化的发生和发展过程、土的残余变形及其随着时间的变化。文中用加权剩余值法详细推导了有限单元法的计算公式。文末举有算例。
This paper combines the seismic pore water pressure with the deformation and consolidation of earth dams (tailing dams), quotes the famous Biot equation, solves the displacement and residual pore water pressures using the space-equal-parameter finite element method; A Non - linear Three Dimensional Effective Stress Analysis Method for Earth Dam Dynamic Analysis . This method can not only calculate the ground motion stress, dynamic strain, and acceleration, but also calculate the growth, diffusion, dissipation, liquefaction and development process of the pore water pressure during and after the earthquake, the residual deformation of the soil and its change over time. . In this paper, the formula of the finite element method is deduced in detail using the weighted residual method. There are examples at the end of the text.