• 应用研究 •

### 人工冻结黏土承载力模型试验及数值模拟分析1)

1. *安徽理工大学土木建筑学院,安徽淮南 232001;
煤矿深井建设技术国家工程实验室,安徽淮南 232001;
**济南工程职业技术学院,济南 250000
• 收稿日期:2018-08-13 出版日期:2019-02-20 发布日期:2019-10-31
• 通讯作者: 2)姚兆明, 教授, 主要从事岩土本构模型及数值分析研究。 E-mail: zhmyaoaust@126.com
• 基金资助:
1)安徽省教育厅资助项目(2016jyxm0274)

### MODEL TEST AND NUMERICAL SIMULATION OF BEARING CAPACITY OF ARTIFICIAL FROZEN CLAY1)

YAO Zhaoming2),†,*, LIU Shuang*, SHANG Yujiao**

1. *School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui, China;
National Engineering Laboratory of Deep Well ConstructionTechnology in Coal Mine, Huainan 232001, Anhui, China;
**Jinan Engineering Vocational Technical College, Jinan 250000, China
• Received:2018-08-13 Online:2019-02-20 Published:2019-10-31

Abstract: This paper studies the bearing capacity of the frozen soil foundation of engineering constructions in permafrost areas. Based on the creep tests of the artificial frozen clay, a generalized Kelvin model is established. The large-scale artificial frozen soil freezing test platform is used to test the bearing capacity of the artificial frozen clay. It is found that the load-settlement curve could be divided into three stages, and the foundation sees a local shear failure. For the use of the ANSYS, the temperature field with consideration of the phase transition is transformed into a temperature load and a three-dimensional solid model and a generalized Kelvin model are built, with a step loading. By comparing the numerical simulation results and the model test results, it is found that the load-settlement curve is consistent, the ultimate bearing capacity is basically the same, and the basic failure mode is the local shear failure. The results show that the ANSYS could analyze the properties of the frozen soil under complex boundary and initial conditions, and the stress and displacement of the frozen soil under different loads could be obtained