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土体剪胀性对地基承载力的影响

DOI: 10.3969/j.issn.1674-0696.2014.05.22, PP. 98-101

Keywords: 岩土工程,剪胀性,地基承载力,有限元,geotechnicalengineering,dilatancy,bearingcapacityoffoundation,FEM

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Abstract:

:？基于经典弹塑性理论，采用非相关联的流动法则，分析并推导了Mohr-Coulomb模型强度准则对应的土体剪胀性方程；采用有限元软件ABAQUS分析了地基土处于不同剪胀角时承载力的变化情况。结果表明：地基承载力随着剪胀角的增大而增大，通过数值模拟得到考虑剪胀时剪胀角的取值范围为(3/4～5/6)φ（φ为土体内摩擦角），对工程实践具有一定的参考意义。

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