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DOI	10.1139/cgj-2019-0306
	Frost heave and thaw consolidation modelling. Part 2: One-dimensional thermohydromechanical (THM) framework
	Yu, Fan; Guo, Peijun; Lai, Yuanming; Stolle, Dieter
发表日期	2020
ISSN	0008-3674
EISSN	1208-6010
起始页码	1595
结束页码	1610
卷号	57 期号:10
英文摘要	This paper presents a thermohydromechanical framework to model frost heave and (thaw) consolidation simultaneously, in which effective and total stresses are taken as the stress variables for unfrozen and frozen soils, respectively. Effective (total) stresses - void ratio - permeability relations are proposed to interpret the frost heave behavior of soil in different cooling modes, (thaw) consolidation processes, and changes in key parameters induced by freeze-thaw cycles. The water flux function proposed by Yu et al. in a companion paper is used to calculate frost heave in the frozen zone and to determine the moving boundary of the unfrozen zone during thaw consolidation. Compared with conventional methods, two other modifications are made to characterize the effect of residual stress and the influence of freeze-thaw cycling on permeability in the thaw consolidation analysis. After the governing equations developed in Lagrangian coordinates are implemented in a finite-element system, the framework is firstly verified by a comparison with both small- and large-strain thaw consolidation theories, in terms of simulating a semi-infinite thaw consolidation case, and is then examined with a focus on the three modifications one-by-one. Following that, the framework is assessed by two numerical examples that reasonably reproduce the freeze-thaw cycling processes in both seasonal frost and permafrost regions.
英文关键词	frost heave; thaw consolidation; residual stress; freeze-thaw cycling; finite element method
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS关键词	DAMAGE CONSTITUTIVE MODEL ; QINGHAI-TIBET HIGHWAY ; PORE-WATER PRESSURE ; HYDRAULIC CONDUCTIVITY ; FREEZE-THAW ; FROZEN SOIL ; VOLUME CHANGES ; CLAYEY SILT ; PERMAFROST ; PERMEABILITY
WOS记录号	WOS:000575705400012
来源期刊	CANADIAN GEOTECHNICAL JOURNAL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239563
作者单位	[Yu, Fan; Lai, Yuanming] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Yu, Fan; Guo, Peijun; Stolle, Dieter] McMaster Univ, Dept Civil Engn, Hamilton, ON L8S 4L7, Canada
推荐引用方式 GB/T 7714	Yu, Fan,Guo, Peijun,Lai, Yuanming,et al. Frost heave and thaw consolidation modelling. Part 2: One-dimensional thermohydromechanical (THM) framework[J],2020,57(10).
APA	Yu, Fan,Guo, Peijun,Lai, Yuanming,&Stolle, Dieter.(2020).Frost heave and thaw consolidation modelling. Part 2: One-dimensional thermohydromechanical (THM) framework.CANADIAN GEOTECHNICAL JOURNAL,57(10).
MLA	Yu, Fan,et al."Frost heave and thaw consolidation modelling. Part 2: One-dimensional thermohydromechanical (THM) framework".CANADIAN GEOTECHNICAL JOURNAL 57.10(2020).