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DOI	10.1016/j.coldregions.2010.07.003
	Laboratory and theoretical investigations on the deformation and strength behaviors of artificial frozen soil
	Yang, Yugui; Lai, Yuanming; Chang, Xiaoxiao
发表日期	2010
ISSN	0165-232X
EISSN	1872-7441
起始页码	39
结束页码	45
卷号	64 期号:1
英文摘要	In order to study the mechanical characteristic of artificial frozen soils, such as strength, and stress-strain relationship, a series of triaxial compression tests of frozen sand has been conducted under confining pressures varying from 0.0 to 140 MPa with different water contents at -6 degrees C Frozen sand presents strain softening during shearing process under low confining pressures: but with increasing confining pressure, the strain softening decreases, and even presents strain hardening under high confining pressures The strength of frozen sand is affected by water content and confining pressure The strength with low water content always increases with increasing confining pressure, however, for frozen sand with a high water content, the strength experiences an increase followed by a decrease with increasing confining pressure To describe the strength characteristic of frozen sand, the non-linear Mohr-Coulomb criterion, in which the generalized internal friction angle and cohesion under various confining pressures are obtained from experimental results, has been presented The result shows that the non-linear Mohr-Coulomb criterion can reflect the decrease of strength of frozen sand under high confining pressures The stress-strain relationships of frozen sand are represented by hyperbolic functions. which can describe both the strain hardening behavior of frozen sand under high confining pressure and the strain softening behavior under a low confining pressure (C) 2010 Elsevier B.V All rights reserved
英文关键词	Artificial frozen soil; Stress-strain relationship; Generalized cohesion; Generalized internal friction angle
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	STRAIN ; TEMPERATURE ; TUNNEL
WOS记录号	WOS:000282624600004
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239521
作者单位	[Yang, Yugui; Lai, Yuanming; Chang, Xiaoxiao] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yugui,Lai, Yuanming,Chang, Xiaoxiao. Laboratory and theoretical investigations on the deformation and strength behaviors of artificial frozen soil[J],2010,64(1).
APA	Yang, Yugui,Lai, Yuanming,&Chang, Xiaoxiao.(2010).Laboratory and theoretical investigations on the deformation and strength behaviors of artificial frozen soil.COLD REGIONS SCIENCE AND TECHNOLOGY,64(1).
MLA	Yang, Yugui,et al."Laboratory and theoretical investigations on the deformation and strength behaviors of artificial frozen soil".COLD REGIONS SCIENCE AND TECHNOLOGY 64.1(2010).