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秦会来, 王玉杰, 黄茂松, 马少坤. 非均质与各向异性地基承载力系数Nc计算[J]. 岩土工程学报, 2010, 32(8).
引用本文: 秦会来, 王玉杰, 黄茂松, 马少坤. 非均质与各向异性地基承载力系数Nc计算[J]. 岩土工程学报, 2010, 32(8).
Calculations of Nc for anisotropic and nonhomogeneous soils[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(8).
Citation: Calculations of Nc for anisotropic and nonhomogeneous soils[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(8).

非均质与各向异性地基承载力系数Nc计算

Calculations of Nc for anisotropic and nonhomogeneous soils

  • 摘要: 应用多块体上限方法探讨了考虑黏土黏聚力强度非均质及各向异性特点时的地基承载力计算问题。分析了考虑黏聚力强度非均质及各向异性时多块体上限方法的计算实现问题,为检验多块体上限方法的计算结果,将多块体上限方法的计算结果做了对比,从而验证了方法的优越性与可靠性;应用多块体上限方法计算了较广泛黏聚力强度非均质及各向异性参数下的地基承载力系数 ,给出相应的的计算曲线,分析研究了 随非均质及各向异性参数变化的规律;最后分析探讨了黏聚力强度非均质对地基破坏面的影响情况,从而揭示了非均质对 影响的内在原因。

     

    Abstract: The multi-block upper bound method is used to calculate the bearing capacity of rough strip foundations on soils with anisotropic and non-homogeneous cohesion strength. Firstly, the anisotropic and non-homogeneous characteristics of the cohesion strength is taken into the calculation by the multi-block upper bound method. To examine the results of the multi-block upper bound method, comparisons are made with other existing results. It can be found that, the present results of the multi-block upper bound method are better, especially when the non-homogeneous coefficient and the internal friction angle are large. Secondly, the values of for large variation range of anisotropic and non-homogeneous coefficients are presented in figures, and the changing law of to anisotropic and non-homogeneous coefficients is discussed. Finally, the failure envelopes relating to different non-homogeneous coefficients are given by the multi-block upper bound method, and the changing law of the failure envelopes to the non-homogeneous coefficients is analyzed to expose the influences of the non-homogeneous coefficients on the values of

     

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