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冰川冻土 ›› 2007, Vol. 29 ›› Issue (4): 640-644.

• 寒区科学与技术 • 上一篇    下一篇

冻土中锥形桩-土大变形有限元数值分析

李栋伟1, 汪仁和1, 胡璞2, 崔灏3   

  1. 1. 安徽理工大学, 土木工程系, 安徽, 淮南, 232001;
    2. 安徽省建设厅, 安徽, 合肥, 230001;
    3. 北京中煤矿山工程有限公司, 北京, 100013
  • 收稿日期:2007-01-20 修回日期:2007-04-05 出版日期:2007-08-25 发布日期:2012-04-26
  • 基金资助:
    安徽省高校青年教师基金项目(2007JQ1044);安徽理工大学青年教师基金资助项目(QN200607);安徽理工大学博士、硕士基金项目资助

A FEM Analysis of Cone-shaped Pile Coupling Large Deformation of Frozen Soil

LI Dong-wei1, WANG Ren-he1, HU Pu2, CUI Hao3   

  1. 1. Department of Civil Engineering of Anhui University of Science and Technology, Huainan Anhui 232001, China;
    2. The Construction Department of Anhui Province, Hefei Anhui 230001, China;
    3. Beijing China Coal Mine Engineering Company Ltd., Beijing 100013, China
  • Received:2007-01-20 Revised:2007-04-05 Online:2007-08-25 Published:2012-04-26

摘要: 应用冻土的粘弹塑本构力学模型,采用温度场与冻土大变形耦合作用的方法,编制了能够模拟寒区冻土大变形的本构有限元程序;并通过用户子程序嵌入到大型商业有限元软件ADINA中,对冻土中锥形桩室内模型试验进行了变形场和温度场耦合的有限元数值模拟.有限元计算结果和模型试验结果非常接近,并且两者的规律性也相同,验证了耦合温度自由度的粘弹塑本构力学模型的正确性和可靠性,表明应用有限元分析方法可为寒区冻土中锥形桩基工程设计提供参考.

关键词: 粘弹塑性本构模型, 大变形, 锥形桩, 模型试验

Abstract: Based viscoelastic-plastic model of frozen soil,using the method in which the temperature field and the large deformation field are coupled,a plane FEM program which can simulate the frozen soil in cold regions is proposed.The viscoelastic-plastic constitutive model for geo-materials is embedded into the commercial FEM software ADINA as a user’s subroutine.The FEM numerical simulation result of the cone-shaped pile model is close to the model test result,with a similar regularity.This result verifies that viscoelastic-plastic constitutive model of couping temperature freedom-degree is correct and reliable,which can be taken as a reference for designing cone-shaped pile in frozen soil.

Key words: viscoelastic-plastic constitutive model, large deformation, cone-shaped pile, model test

中图分类号: 

  • TU473