| 改进的西原模型及其在ADINA程序中的实现 |
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| 引用本文： | 汪仁和,李栋伟,王秀喜.改进的西原模型及其在ADINA程序中的实现[J].岩土力学,2006,27(11):1954-1958. |
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| 作者姓名： | 汪仁和 李栋伟 王秀喜 |
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| 作者单位： | 1.安徽理工大学 土木工程系，安徽 淮南 232001；2.中国科学技术大学 力学和机械工程系，合肥 230026 |
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| 基金项目： | 安徽省自然科学基金;安徽理工大学校科研和教改项目 |
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| 摘 要： | 通过对现有流变模型的分析及大量的冻土单轴蠕变试验表明：可以用非线性牛顿体替代线性牛顿体对西原模型进行改进。利用Mises屈服准则推导出用于数值计算的黏弹塑性材料柔度矩阵，并成功地添加到了ADINA有限元程序中。通过对淮南某深表土冻结井筒开挖过程的数值模拟和现场实测数据对比表明：改进的西原模型用于深井冻结壁的有限元计算分析是可行的。
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| 关 键 词： | 蠕变 改进的西原模型 冻结壁 ADINA有限元程序 |
| 文章编号： | 1000-7598-（2006）11-1954-05 |
| 收稿时间： | 2005-07-11 |
| 修稿时间： | 2005-11-22 |
Improved Nishihara model and realization in ADINA FEM |
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| WANG Ren-he,LI Dong-wei,WANG Xiu-xi.Improved Nishihara model and realization in ADINA FEM[J].Rock and Soil Mechanics,2006,27(11):1954-1958. |
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| Authors: | WANG Ren-he LI Dong-wei WANG Xiu-xi |
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| Affiliation: | 1.Department of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, China; 2.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | Through analyzing the present theological models and experimenting lots of creeping tests of frozen clay specimens under uniaxial stress states, the results show that the nonlinear N element substitute for the linear one is feasible and the Xiyuan model is improved. Making use of the Mises yield criterion, a soft matrix is derived to use numerical calculating as a viscous-elastic-plastic material. Numerical simulation of the shaft well excavation process and field measurements of the deformation of deep soil frozen wall in Huainan Mine show that the improved Nishihara model is feasible for FEM numerical simulation of deep soil frozen wall. |
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| Keywords: | creep improved Nishihara model frozen wall ADINA FEM |
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