地震荷载下三维边坡动力稳定性分析
发布时间：2018-08-14 20:13
【摘要】：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。
[Abstract]:The dynamic stability analysis of slope is always a difficult point in geotechnical engineering. In order to study the application of vector sum method in the dynamic stability analysis of three dimensional slope, a method of dynamic stability analysis of three dimensional slope is presented, which combines vector sum method with dynamic finite element method. The calculation process is also given. Finally, the method is applied to the dynamic stability analysis of large-scale accumulative slope. The dynamic analysis of the slope shows that the dynamic response law of the 3D slope is greatly affected by the topography, and the accumulative body has a better effect on absorbing the seismic wave, and the stability calculation shows that under the action of the earthquake with M = 6.5 (peak acceleration 0.2 g), the dynamic response of the slope is affected greatly by the topography. The average safety factors of 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 concluded that the slope can be kept stable under the earthquake load.
【作者单位】： 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;中国科学院大学;
【基金】：国家自然科学基金资助项目(41302236,51674239)~~
【分类号】：TU435;TU457
[Abstract]:The dynamic stability analysis of slope is always a difficult point in geotechnical engineering. In order to study the application of vector sum method in the dynamic stability analysis of three dimensional slope, a method of dynamic stability analysis of three dimensional slope is presented, which combines vector sum method with dynamic finite element method. The calculation process is also given. Finally, the method is applied to the dynamic stability analysis of large-scale accumulative slope. The dynamic analysis of the slope shows that the dynamic response law of the 3D slope is greatly affected by the topography, and the accumulative body has a better effect on absorbing the seismic wave, and the stability calculation shows that under the action of the earthquake with M = 6.5 (peak acceleration 0.2 g), the dynamic response of the slope is affected greatly by the topography. The average safety factors of 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 concluded that the slope can be kept stable under the earthquake load.
【作者单位】： 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;中国科学院大学;
【基金】：国家自然科学基金资助项目(41302236,51674239)~~
【分类号】：TU435;TU457
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