[1]王 凯,李顺群,陈之祥,等.正冻黏土瞬态温度场计算方法改进与试验验证[J].深圳大学学报理工版,2017,34(2):157-164.
 Wang Kai,Li Shunqun,Chen Zhixiang,et al. Improvement and experimental verification of transient temperature field calculation of freezing clay[J].Journal of Shenzhen University Science and Engineering,2017,34(2):157-164.
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正冻黏土瞬态温度场计算方法改进与试验验证()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第34卷
期数:
2017年第2期
页码:
157-164
栏目:
土木建筑工程
出版日期:
2017-03-20

文章信息/Info

Title:
 Improvement and experimental verification of transient temperature field calculation of freezing clay
作者:
 王 凯1李顺群12陈之祥1桂 超3
1) 天津城建大学土木工程学院,天津 300384;2)天津市软土特性与工程环境重点实验室,天津 300384;3)新乡学院土木工程与建筑学院,河南新乡 453003
Author(s):
 Wang Kai 1 Li Shunqun 12 Chen Zhixiang 1 and Gui Chao 3
1) School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, P.R.China; 2) Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin 300384, P.R.China; 3) Department of Civil Engineering and Architecture, Xinxiang University, Xinxiang 453003, Henan Province, P.R.China
关键词:
 冻土工程人工冻结未冻水瞬态温度场潜热正冻黏土
Keywords:
 frozen soil engineering artificial freezing unfrozen water transient temperature field latent heat freezing clay
分类号:
TU 752
文献标志码:
A
摘要:
 针对现有正冻黏土瞬态温度场计算方法存在的问题,指出正冻黏土中未冻水含量随温度的变化是导致瞬态温度场计算误差较大的原因. 在引入未冻水含量计算模型和水/冰相变潜热动态关系的基础上,建立了适用于正冻黏土的热质扩散方程,对其瞬态温度场进行了计算分析. 采用现有的3种计算方法和提出的正冻黏土瞬态温度场计算方法,通过ABAQUS软件模拟了模型槽人工冻结试验的瞬态温度场,对比了模拟结果和试验结果. 研究表明,与现有的计算方式相比,所提正冻黏土瞬态温度场计算方法计算精度更高. 研究可提高冻土-水热力耦合问题的求解精度,服务于人工冻结法的设计和实践.
Abstract:
 The existing problems in the calculation of transient temperature field in freezing soil are put forward,and it is believed that the change of unfrozen water content in freezing clay is the root cause of the calculation error of transient temperature field. Based on the calculation model of unfreezing water content and the dynamic relationship of water/ice phase latent, the heat-mass diffusion equations for freezing clay are established, and the transient temperature field is calculated and analyzed. By using three existing calculation methods and the proposing transient temperature field calculation method in freezing soil, the transient temperature field of artificial freezing experiment is simulated by ABAQUS software, the four simulation results are compared with the experimental results of model, respectively. The results show that compared with the existing methods, the method of calculating transient temperature field in freezing clay is not only theoretically reliable but also more accurate. The results of this study can improve the solution accuracy of the coupled problem of moisture-heat-stress, and then serve the design and practice of artificial freezing method.

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更新日期/Last Update: 2017-03-03