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DOI	10.1002/ppp.2028
	Simulation of heat-water-mechanics process in a freezing soil under stepwise freezing
	Bai, Ruiqiang; Lai, Yuanming; You, Zhemin; Ren, Jingge
发表日期	2020
ISSN	1045-6740
EISSN	1099-1530
起始页码	200
结束页码	212
卷号	31 期号:1
英文摘要	Frost heave is a process coupling heat transfer, water migration, water-ice phase change and deformation. Frost heave forms various landforms, such as frost mounds, ice pitons, sorted polygons and stone circles, and potentially induces a variety of engineering failures, such as building inclination, differential engineering foundation and pavement cracking. To understand the mechanism of frost heave under complex freezing paths, we provide a numerical heat-water-mechanics model that incorporates shrinkage in an unfrozen zone and uses a water content criterion to judge the formation of the ice lens. The model is then used to simulate the moisture, temperature, deformation and ice lens of a freezing soil during stepwise freezing. The simulated results for temperature, displacement and the ice lens are in good agreement with measured data, indicating that the model can be used to describe the heat-water-mechanics process in freezing soils under a complex freezing path. The freezing path determines the soil's water content profile in a manner like that in a stepwise freezing process, where each step produces a water-content peak at the frozen fringe of the step. The model must consider shrinkage of the unfrozen area, or the amount of frost heave would be overestimated and the predicted ice lens would unrealistically be found in the frozen zone.
英文关键词	frost heave; heat-water-mechanics model; ice segregation; stepwise freezing
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS关键词	COUPLED HEAT ; FROST HEAVE ; ICE LENS ; MASS-TRANSFER ; FROZEN SOIL ; MODEL ; PERMAFROST ; TRANSPORT ; EMBANKMENT ; CYCLES
WOS记录号	WOS:000514764000014
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239583
作者单位	[Bai, Ruiqiang; Lai, Yuanming; You, Zhemin; Ren, Jingge] NW Inst EcoEnvironm, Chinese Acad Sciences, State Key Lab Frozen Soil Engn, Resources, Lanzhou, Peoples R China; [Bai, Ruiqiang; Lai, Yuanming; Ren, Jingge] Univ Chinese Acad Sciences, Beijing, Beijing, Peoples R China; Univ Chinese Acad Sciences, Lanzhou, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Bai, Ruiqiang,Lai, Yuanming,You, Zhemin,et al. Simulation of heat-water-mechanics process in a freezing soil under stepwise freezing[J]. 中国科学院西北生态环境资源研究院,2020,31(1).
APA	Bai, Ruiqiang,Lai, Yuanming,You, Zhemin,&Ren, Jingge.(2020).Simulation of heat-water-mechanics process in a freezing soil under stepwise freezing.PERMAFROST AND PERIGLACIAL PROCESSES,31(1).
MLA	Bai, Ruiqiang,et al."Simulation of heat-water-mechanics process in a freezing soil under stepwise freezing".PERMAFROST AND PERIGLACIAL PROCESSES 31.1(2020).