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软土工程中有限元分析与非线性流变影响
作者:于芳 赵维炳 李荣强  
单位:河海大学 南京水利科学研究院 深圳市建设局 江苏南京210098 江苏南京210024 广东深圳518026 
关键词:非线性流变  有限元法  地基沉降  本构关系  Yin&Graham“时间线”模型 
分类号:TU447
出版年,卷(期):页码:2006,30(1):1-3
摘要:
采用软土Y in&G raham“时间线”模型及参数确定方法,对流变软土地基固结进行研究,编制了非线性流变有限元计算程序。对南坪快速干道软土地基沉降计算进行多种模式有限元对比分析。计算结果表明,计算地基沉降时考虑软土非线性流变是有必要的,其计算值与实测值较吻合。
Based on the "Yin & Graham time line" nonlinear rheological soil model and methods for calculating the parameters,the rheological character of soft soil is incorporated in the study of consolidation.A finite element analysis programme for the nonlinear rheological soil model is developed and contrast analysis under different conditions is carried out for the soft soil of Nanping Rapid Road.The comparison proves that it is necessary to consider the rheological characters of the soft soil when the settlement of soil is being calculated and the calculated values are found tally with to the measured ones.
基金项目:
国家自然科学基金资助项目(50279021)
作者简介:
参考文献:
[1]Y in J H,G raham J.Equ iva len t tim es and 1-D elastic v isco-p lastic m odeling of tim e-dependen t stress-stra in behav ior ofclays[J].C anad ian G eotechn ica l Journa l,1994,31(1):42-52. [2]Christie I F,T onks P M.D evelopm en ts in the tim e linestheory of conso lidation[A].P roc.of the 11th ICSM FE,1/A/8[C].San F rancisco,423-426. [3]M esri G.V iscous-elastic-p lastic m odeling of 1-D tim e-dependen t behav ior of clays:D iscussion[J].C anad ianG eotechn ica l Journa l,1990,27:259-261. [4]G arlanger J E.The conso lidation of so ils exh ib iting creepunder constan t effective stress[J].J of G eotechn ique,1972,22(1):71-78. [5]谢宁.软土非线性流变的理论、试验和应用研究[D].上海:同济大学,1993. [6]赵维炳,施健勇.软土固结与流变[M].南京:河海大学出版社,1996. [7]郑明榕,陆浩亮,孙钧.软土工程中的非线性流变分析[J].岩土工程学报,1996,18(5).
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