人工冻土冻结过程中热-力耦合的数值模拟方法研究

孙立强; 任宇晓; 闫澍旺; 杨爱武; 韩圣章

doi:10.11779/CJGE2015S2027

人工冻土冻结过程中热-力耦合的数值模拟方法研究 English Version

1. 天津市软土特性与工程环境重点实验室,天津 300384; 2. 天津大学建筑工程学院,天津 300072; 3. 天津市地下铁道集团有限公司,天津 300051

基金项目: 国家自然科学基金项目（41402263）; 天津市自然科学基金; 重点项目（13JCZDJC35300）

详细信息

作者简介:
孙立强(1979- ),男,副教授,硕士生导师,主要从事岩土工程方面的教学科研工作。

计量
- 文章访问数: 410
- HTML全文浏览量: 3
- PDF下载量: 352
出版历程
- 收稿日期: 2015-03-25
- 发布日期: 2015-07-24

Numerical simulation method for thermal-stress coupling in artificial freezing process

1. Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin 300384, China; 2. School of Civil Engineering, Tianjin University, Tianjin 300072, China; 3.Tianjin Metro Group Co., Ltd., Tianjin 300051, China

摘要

摘要: 随着地下工程的发展,人工冻结法已成为地下工程建设中常用的技术。关于人工冻土在冻结过程中温度场的发展规律以及冻结过程中因为冻胀产生的对周边环境的影响有待于进一步深入的研究。通过室内试验得出了热物理参数随温度场的变化规律,结合天津地铁某联络通道的人工冻土工程,提出并建立了人工冻结过程中考虑热物理参数随温度变化的热-力耦合的数值计算方法,利用该方法计算分析了人工冻结过程中土体的温度场和位移场的发展规律,通过与实测数据对比,证明了该方法的可行性,成果可以指导人工冻土工程的设计与施工。
- 人工冻结法 /
- 数值模拟 /
- 温度场 /
- 位移场
Abstract: With the development of underground engineering, the artificial freezing method has become the common techniques of underground construction. The law of the development of artificial frozen temperature field and the influence on the surrounding environment because of frost heave in the freezing process need to be further studied. The law of variation of the thermal physical parameters along with the temperature field is obtained through laboratory tests, then a numerical method considering thermal stress coupling in the process of artificial freezing is proposed and established based on an artificial frozen soil project of a connecting passage of Tianjin subway. The development law of temperature fields and the amount of frost heaving of soil during freezing process are calculated by using this method. The proposed method is proved to be feasible by comparing the calculated results with the actual data. Consequently, the proposed method can provide guidance and reference for the design and construction of artificial freezing projects.
- artificial freezing method /
- numerical simulation /
- temperature field /
- displacement field

HTML全文

参考文献(5)

[1]	毛良根.任意冻结管分布下冻土温度场计算方法研究[D]. 上海: 同济大学, 2007: 25-31. (MAO Liang-gen. Research on calculation method for temperature field of frozen soil considering irregular layout of freezing pipes[D]. Shanghai: Tongji University, 2007: 25-31. (in Chinese))
[2]	陈瑞杰, 程国栋, 李述训, 等. 人工地层冻结应用研究进展和展望[J]. 岩土工程学报, 2000, 22(1): 40-44. (CHEN Rui-jie, CHENG Guo-dong, LI Shu-xun, et al. Development and prospect of research on application of artificial ground freezing[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(1): 40-44. (in Chinese))
[3]	YANG P, KE J M, WANG J G, et al. Numerical simulation of frost heave with coupled water freezing, temperature and stress fields in tunnel excavation[J]. Computers and Geotechnics, 2006, 33: 6-7.
[4]	MT/T 593.1—2011 人工冻土物理力学性能试验[S]. 北京:煤炭工业出版社, 2011. (MT/T 593.1—2011 Artificial frozen soil physics mechanics performance test[S]. Beijing: China Coal Industry Publishing House, 2011. (in Chinese))
[5]	沈碧伟, 胡向东, 沈伟杰. 单排管冻土帷幕平均温度计算方法分析[J]. 低温建筑技术, 2010, 32(11): 81-84. (SHEN Bi-wei, HU Xiang-dong, SHEN Wei-jie. Calculation method of average temperature for temperature field of single-row-frozen soil wall[J]. Low Temperature Architecture Technology, 2010, 32(11): 81-84. (in Chinese))