饱和冻土水热力耦合模型解析及验证

何敏; 李宁; 刘乃飞

饱和冻土水热力耦合模型解析及验证 English Version

何敏^1,3,
李宁^1,2,
刘乃飞¹

(1. 西安理工大学岩土工程研究所，陕西西安 710048；2. 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；3. 西北勘测设计研究院，陕西西安 710065)

基金项目: 国家自然科学基金创新群体项目（40821001）；中科院寒区旱区研究所重点实验室项目（SKLFSE-ZY-03）

详细信息

作者简介:
何敏(1981– )，男，湖北随州人，博士研究生，主要从事水电站设计及寒区岩土工程三场耦合等方面的研究工作。

中图分类号: TU47
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出版历程
- 收稿日期: 2010-10-07
- 发布日期: 2012-11-13

Analysis and validation of coupled heat-moisture-deformation model forsaturated frozen soils

HE Min^1,3,
LI Ning^1,2,
LIU Nai-fei¹

(1. Xi'an University of Technology, Xi'an 710048, China; 2. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou 730000, China; 3. Northwest Hydro Consulting Engineering, Xi'an 710048, China)

摘要

摘要: 在饱和冻土多孔多相介质理论构架的基础上，通过引入Clapeyron方程描述温度梯度对冻结区水分迁移影响，并结合寒区工程的实际特点，对数学耦合模型中的应力平衡方程、连续性方程、能量方程进行了适当的简化，从而建立了实用化的饱和冻土温度场、水分场、变形场耦合分析的数值模型。据此开发了能够反应各种外因（外载、温度）作用下土体多场耦合机制的有限元分析程序，利用研发的程序对经典试验进行了分析，初步验证了模型及分析程序的可行性与合理性，为模型的工程应用奠定了基础。
- 冻土 /
- 水热力耦合模型 /
- 水分迁移 /
- 相变
Abstract: Based on the theoretical frame of multi-phase porous medium for saturated frozen soils, the momentum equilibrium equation, the continuity equation, and the energy equation of the coupled model for frozen soils are simplified through the introduction of Clapeyron equation to describe the temperature gradient on the moisture migration in freezing zone and considering the actual engineering characteristics in cold regions. The program of the FEM resolution for the coupled heat-moisture-deformation model for civil engineering in cold zone is established under the plane strain. The simulated results for analyzing Penner's lab heaving tests are introduced to check and validate the rationality and reliability of the proposed model.
- frozen soil /
- coupled heat-moisture-deformation model /
- moisture migration /
- phase change

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参考文献(28)

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饱和冻土水热力耦合模型解析及验证 English Version

作者简介: 何 敏(1981– )，男，湖北随州人，博士研究生，主要从事水电站设计及寒区岩土工程三场耦合等方面的研究工作。

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Analysis and validation of coupled heat-moisture-deformation model forsaturated frozen soils

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出版历程

目录

作者简介:
何敏(1981– )，男，湖北随州人，博士研究生，主要从事水电站设计及寒区岩土工程三场耦合等方面的研究工作。