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摘要：
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利用依据固结仪分步加载软土蠕变特性而建立的三维软土蠕变模型,对天津港南疆突堤进行有限元分析,并与实测结果进行对比。计算结果与实测曲线吻合较好,说明该模型能够较准确模拟实际工程中土体的蠕变特性。通过模型参数对计算结果的影响分析发现,模型中的修正蠕变系数μ*对计算结果影响最大,并决定土体的蠕变为衰减蠕变或非衰减蠕变。
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Based on a three dimensional creep model developed from the creep properties of soft foil under the stepped loads in and oedometer,the deformation of Nanjiang Pier in Tianjin Port due to creep was analyzed with the finite element method and compared with the measured results.The calculated results fitted well with the measured profile,indicating that the model can accurately simulate the behavior of creep in soil mass in practical engineering works.It is found after an analysis of the influence of the parameters of the model upon the calculated results that the modified creep coefficient,μ~,in the model influences most greatly the calculated results and determines if the creep in the soil mass is an attenuation creep or not.
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基金项目：
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作者简介：
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参考文献：
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[1]维亚洛夫.土力学的流变原理[M].科学出版社,1987.
[2]范广勤.岩土工程流变力学[M].煤炭工业出版社,1993.
[3]孙均.岩土材料流变及其工程应用[M].中国建筑工业出版社,1999.
[4]闫澍旺,张荣安.天津港南疆突堤蠕变问题的有限元分析[J].港工技术,2003,3(1):45-47.
[5]张荣安.软粘土地基蠕变问题的有限元分析[D].天津大学,2002.
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