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边坡的动力稳定性分析一直是岩土工程领域的难点。为研究矢量和法在三维边坡动力稳定性分析中的应用,从三维均质边坡出发,给出了一种将矢量和法与动力有限元法相结合的三维边坡动力稳定性分析方法,并给出其具体计算过程。最后,将该方法运用到大型堆积体边坡的动力稳定性分析中。该边坡的动力分析表明,三维边坡动力响应规律受地形的影响很大,堆积体对地震波具有较好的吸收效果;在6.5级地震(峰值加速度0.2 g)作用下,稳定性计算表明,堆积体Q1与Q2的平均安全系数分别为1.47,1.23,最小安全系数分别为1.33,1.18,可认为边坡在该地震荷载下能够保持稳定。
Dynamic stability analysis of slope has always been a difficult problem in geotechnical engineering. In order to study the application of vector sum method to dynamic stability analysis of 3D slope, a three-dimensional slope stability analysis method based on vector sum method and dynamic finite element method is presented based on three-dimensional homogeneous slope. And given its specific calculation process. Finally, the method is applied to the dynamic stability analysis of large pile slope. The dynamic analysis of the slope shows that the dynamic response of the three-dimensional slope is greatly affected by the terrain, and the sediment has a good absorption effect on the seismic wave. The stability calculation of the 6.5-magnitude earthquake (peak acceleration 0.2 g) The average safety factors of the stacked bodies Q1 and Q2 are 1.47 and 1.23, respectively, and the minimum safety factors are 1.33 and 1.18, respectively. It can be considered that the slope can be kept stable under the earthquake load.