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(一)原文作者用非线性平面有限法,按有效应力原理对饱和砂土进行地震反应分析,同时考虑了动孔隙水压力扩散与消散及残余变形,提出了相应的计算方法与电子计算机程序,并附有算例。这类问题是近年来国际上用有限元法对地震液化进行计算研究的重要课目,本文作了进一步的发展与改进。本方法可计算地震时饱和砂层中任一点的加速度、动剪应力、动剪应变、动孔隙压力消长及土体变形的过程线,可供地基、土坡、堤坝等实际工程抗震设计的应用。
(a) The original author used the nonlinear plane finite method to analyze the seismic response of saturated sandy soil according to the principle of effective stress, taking into account the diffusion and dissipation of dynamic pore water pressure and residual deformation, and proposed corresponding calculation methods and computer programs. With examples. This type of problem is an important subject for calculation and research of earthquake liquefaction in recent years using the finite element method in the world. This paper has made further development and improvement. This method can calculate the acceleration, dynamic shear stress, dynamic shear strain, dynamic pore pressure increase, and soil deformation process at any point in a saturated sand layer during an earthquake. It can be used for seismic design of practical projects such as foundations, slopes, and dams. .