| Numerical Simulation on Freezing Process of Saturated Granular Soil |
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| 作者姓名： | 曹宏章 刘石 |
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| 作者单位： | Institute of Engineering Thermophysics Chinese Academy of Sciences，Graduate School Chinese Academy of Sciences Beijing 100080 China，Institute of Engineering Thermophysics Chinese Academy of Sciences，Beijing 100080 China，Beijing 100080 China |
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| 基金项目： | The National Natural Science Founda-tion of China (No.40501017)，the Innovation Program of the Chinese Academy of Sciences (No.KZCX1-SW-06) |
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| 摘 要： | Introduction Soil freezing and thawing have a harmful impacton roads and buildings in cold regions. For example,frost heave and thawing settlement lead to cracks, set-tlement and structure breaking. A number ofreports1-3]indicated that the frost heave induced bywater transfer could exceed the volume of water chan-ges because of water freezing in the cells. The mainmodels for coupled heat and moisture transfer infreezing soil are hydrodynamic models and rigid icemodels1,2]. Though the hydrod…
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| 关 键 词： | 饱和土壤 硬冰模型 模拟实验 冻结冰 |
| 文章编号： | 1005-2429（2007）04-0311-08 |
| 修稿时间： | 2006-12-19 |
Numerical Simulation on Freezing Process of Saturated Granular Soil |
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| CAO Hong-zhang,LIU Shi,.Numerical Simulation on Freezing Process of Saturated Granular Soil[J].Journal of Southwest Jiaotong University,2007,15(4):311-318. |
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| Authors: | CAO Hong-zhang LIU Shi |
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| Institution: | 1.Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China ; 2. Graduate School, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | The relation between ice pressure and load as a criterion of segregated ice initiation is introduced into the rigid ice model to simulate frost heave in saturated and granular soil. The calculated results show that unfrozen water content, thermal conductivity and hydraulic conductivity change greatly in frozen fringe. In numerical simulations, the influence of load, hydraulic conductivity and property of soil containing water on the process of soil freezing are analyzed, and the simulation curves such as cumulative heave, the change of depth of frozen and the distributions of water content are similar to the observations reported elsewhere. |
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| Keywords: | Saturated soil Frozen heave Rigid ice model Simulation |
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