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	Analyses of behavior of stress-strain of frozen Lanzhou loess subjected to K-0 consolidation
	Wang, DY; Ma, W; Chang, XX
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2004-11-01
卷号	40期号:1-2页码:19-29
关键词	frozen soil K-0 consolidation loading and unloading stress-strain behavior
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2004.03.002
通讯作者	Wang, DY(dywang@ns.lzb.ac.cn)
英文摘要	To determine the behavior of stress-strain of frozen soil in the deep alluvium, the axial loading or radial unloading triaxial shear tests were performed at temperature of -2, -5, -7 and -10degreesC under the initial confining pressure of 1-5 MPa after specimens of Lanzhou loess experienced KO consolidation. Results indicate that both the axial loading and the radial unloading stress-strain curves can be divided into three stages: the elastic stage, the strain-hardening stage, and the yield stage (or the flow stage). The failure strength was increasing with increase of initial confining pressure and decrease of temperature. For the radial unloading triaxial test, there is no displacement at a lower negative temperature and somehow a higher initial confining pressure, even if the confining pressure is removed to zero. The ultimate deviator stress and the initial tangent modulus can be obtained from the stress-strain equation established by tested frozen soil. It is found that the initial tangent modulus determined by the axial loading tests increased linearly with an increase of the initial confining pressure but was not pronounced to temperature. Differentially, the ultimate deviator stress was linearly increasing with increase of the initial confining pressure and decreasing with increase of the temperature. The unloading triaxial test shows that the initial tangent modulus was close to a constant at a state of lower negative temperature and higher initial confining pressure, without a relation to the initial confining pressure. The ultimate deviator stress was linearly increasing with increase of the initial confining pressure, while the temperature plays a less obvious role at a condition of lower initial confining pressure. In contrast, the effect of temperature was gradually pronounced with increase of the initial confining pressure. (C) 2004 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	STRENGTH ; DEFORMATION ; SILT
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000225155000002
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556979
专题	寒区旱区环境与工程研究所
通讯作者	Wang, DY
作者单位	CAS, State Key Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, DY,Ma, W,Chang, XX. Analyses of behavior of stress-strain of frozen Lanzhou loess subjected to K-0 consolidation[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2004,40(1-2):19-29.
APA	Wang, DY,Ma, W,&Chang, XX.(2004).Analyses of behavior of stress-strain of frozen Lanzhou loess subjected to K-0 consolidation.COLD REGIONS SCIENCE AND TECHNOLOGY,40(1-2),19-29.
MLA	Wang, DY,et al."Analyses of behavior of stress-strain of frozen Lanzhou loess subjected to K-0 consolidation".COLD REGIONS SCIENCE AND TECHNOLOGY 40.1-2(2004):19-29.

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