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DOI	10.1016/j.applthermaleng.2017.12.061
	Experimental and numerical simulations on heat-water-mechanics interaction mechanism in a freezing soil
	Li, Shuangyang; Zhang, Mingyi; Pei, Wansheng; Lai, Yuanming
发表日期	2018
ISSN	1359-4311
起始页码	209
结束页码	220
卷号	132
英文摘要	In cold regions, the annual ground freezing is responsible for many distinct and widespread terrain features, such as ice wedges, frost mound and ground ice. In particular, the frost action caused by the soil freezing is a prevailing and heavy damage to engineering structures. The frost heave process of a freezing soil involves complicated coupled heat and water transfers as well as mechanical variation. To explore this multi-physical interaction, first, we built a numerical heat-water-mechanics model based on energy, mass and momentum conservation principles. In this model, several critical important characteristics of the freezing soil are taken into account. Then, we carried out a one-side freezing experiment of silty clay column in an open system with non-pressure water supply. Meanwhile, we used the experiment to simulate the water, temperature and deformation variations of the freezing soil column. The simulated temperatures and displacement well agree with those measured data, which implies the numerical model is valid and can describe the heat-water-mechanics process in the freezing soil. Finally, the heat-water mechanics interaction mechanism of the freezing soil is explained and analyzed by combining the experimental investigation and numerical simulation. This study is helpful to better understand the interaction between water, temperature, deformation and the frost heave mechanism of the freezing soil. Furthermore, the model and results in the study can serve as references for further investigation, too. (C) 2017 Elsevier Ltd. All rights reserved.
英文关键词	Cold region; Freezing soil; Frost heave; Soil column; Heat-water-mechanics model
语种	英语
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS关键词	FROZEN SOIL ; FROST HEAVE ; COUPLED HEAT ; PIPELINE INTERACTION ; PERMAFROST REGIONS ; MODEL ; TEMPERATURE ; TRANSPORT ; TUNNEL
WOS记录号	WOS:000426021800020
来源期刊	APPLIED THERMAL ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239472
作者单位	[Zhang, Mingyi] Chinese Acad Sci, State Key Lab Frozen Soil Engn Cold & Arid Reg En, Lanzhou 730000, Gansu, Peoples R China; Chinese Acad Sci, Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuangyang,Zhang, Mingyi,Pei, Wansheng,et al. Experimental and numerical simulations on heat-water-mechanics interaction mechanism in a freezing soil[J],2018,132.
APA	Li, Shuangyang,Zhang, Mingyi,Pei, Wansheng,&Lai, Yuanming.(2018).Experimental and numerical simulations on heat-water-mechanics interaction mechanism in a freezing soil.APPLIED THERMAL ENGINEERING,132.
MLA	Li, Shuangyang,et al."Experimental and numerical simulations on heat-water-mechanics interaction mechanism in a freezing soil".APPLIED THERMAL ENGINEERING 132(2018).