| 土体冻融过程中水、热、力三场耦合本构问题及数值分析 |
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| 引用本文： | 朱志武,宁建国,马巍.土体冻融过程中水、热、力三场耦合本构问题及数值分析[J].工程力学,2007,24(5):138-144,137. |
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| 作者姓名： | 朱志武 宁建国 马巍 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室,北京,100081;西南交通大学力学博士后流动站,四川,成都,610031;北京理工大学爆炸科学与技术国家重点实验室,北京,100081;中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金
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中国科学院基金 |
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| 摘 要： | 根据传热学、渗流理论及冻土力学提出了带相变的温度场、水分场和应力场耦合问题的数学力学模型及其控制方程。利用自行开发的程序进行数值模拟,加入我们推出的本构关系和所建立的数学力学模型,通过对冻土路基水分场、温度场、应力场三场的数值计算结果分析,得到了准确、详尽的符合实际的温度场与应力场、位移场、应变场耦合的计算结果。
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| 关 键 词： | 冻土 本构模型 耦合 温度场 水分场 应力场 |
| 文章编号： | 1000-4750（2007）05-0138-07 |
| 修稿时间： | 2005-06-072005-09-19 |
CONSTITUTIVE MODEL AND NUMERICAL ANALYSIS FOR THE COUPLED PROBLEM OF WATER, TEMPERATURE AND STRESS FIELDS IN THE PROCESS OF SOIL FREEZE-THAW |
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| ZHU Zhi-wu,NING Jian-guo,MA Wei.CONSTITUTIVE MODEL AND NUMERICAL ANALYSIS FOR THE COUPLED PROBLEM OF WATER, TEMPERATURE AND STRESS FIELDS IN THE PROCESS OF SOIL FREEZE-THAW[J].Engineering Mechanics,2007,24(5):138-144,137. |
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| Authors: | ZHU Zhi-wu NING Jian-guo MA Wei |
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| Affiliation: | 1. State Key Laboratory of Explosion Science and Technology, BIT, Beijing 100081, China; 2. Postdoctoral Station of Mechanics, Southwest Jiaotong University, Chengdu Sichuan 610031, China; 3. Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Gansu, Lanzhou 730000, China |
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| Abstract: | According to heat transfer, filtration theory and mechanics of frozen soil, a mathematics model and its control equation were put forward, which is of the coupling problem of temperature field, water field and stress fields. By utilizing the program developed by ourselves and the constitutive relation and mathematics mechanics model which we built up, numerical analysis was carried out to obation moisture, temperature and stress fields of frozen roadbed. The result agreed with actual temperature field coupled with stress field, moisture field and strain field, and is consistent with the result of predecessors and the test result. |
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| Keywords: | frozen soil constitutive model coupling temperature field water field stress field |
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