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本文提出了一个广泛适用的饱和砂层抗震稳定分析方法。文中用有限单元和有限差分相结合的方法,计算出地震作用下饱和砂层中各点的动力孔隙水压力反应;又依据极限平衡理论,算出了各点的限界孔隙水压力,并将二者的比值作为稳定性和液化势的评价准则。本文提出的方法曾应用于我国若干重大工程的分析,得到了较好的效果。
This paper presents a widely applicable method for seismic stability analysis of saturated sands. In this paper, the finite pore element and finite difference method are used to calculate the dynamic pore water pressure response of each point in the saturated sand layer under seismic action. According to the limit equilibrium theory, the limit pore water pressure at each point is calculated and the two are calculated. The ratio is used as an evaluation criterion for stability and liquefaction potential. The method proposed in this paper was applied to the analysis of a number of major projects in China and obtained good results.