| 砂井地基非线性弹性有限元分析 |
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| 引用本文： | 魏丽敏,何群,孙愚男.砂井地基非线性弹性有限元分析[J].公路交通科技,2005,22(2):39-42,49. |
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| 作者姓名： | 魏丽敏 何群 孙愚男 |
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| 作者单位： | 中南大学土木建筑学院,湖南,长沙,410075 |
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| 摘 要： | 将非线性弹性本构关系(Duncan模型)引入Biot固结理论有限元程序,模拟实际施工过程,对砂井地基进行平面应变有限元分析。与实测结果的对比表明,该方法较好地反映了软土地基沉降及孔隙水压力的发展趋势;对泊松比及渗透系数的参数敏感性分析也得出了一些有益结论。
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| 关 键 词： | 砂井地基 平面有限元 非线性弹性 沉降 孔隙水压力 |
| 文章编号： | 1002-0268(2005)02-0039-04 |
Nonlinear Elasticity Finite Element Analysis for Sand Drain Subgrade |
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| WEI Li-min,HE qun,SUN Yu-nan.Nonlinear Elasticity Finite Element Analysis for Sand Drain Subgrade[J].Journal of Highway and Transportation Research and Development,2005,22(2):39-42,49. |
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| Authors: | WEI Li-min HE qun SUN Yu-nan |
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| Abstract: | This paper analyses the behavior of the sand drain subgrade in the process of filling and precompression with the plain strain FEM,incorporating the nonlinearity constitutive relation (Duncan's mode) into the Biot's consolidation theory program.Comparing to the field measurements data,it indicates that the method reflects very well the developing trend of settlement and pore water pressure for soft clay.The sensitivity analysis for Poisson's ratio and coefficient of permeability has given some beneficial conclusions. |
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| Keywords: | Sand drain subgrade Plain strain FEM Nonlinearity elastic model Settlement Pore water pressure |
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