气候变化领域集成服务门户(CCPortal): Modified Hoek-Brown criterion for nonlinear strength of frozen soil

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DOI	10.1016/j.coldregions.2012.10.010
	Modified Hoek-Brown criterion for nonlinear strength of frozen soil
	Yang, Yugui; Gao, Feng; Lai, Yuanming
发表日期	2013
ISSN	0165-232X
起始页码	98
结束页码	103
卷号	86
英文摘要	The strength of frozen soil presents obvious nonlinearity, which makes many theoretical criteria unable to accurately predict failure. The Hoek-Brown criterion, which is one of the most widely used strength criteria in geotechnical engineering, could predict the strength of frozen soil subjected to low confining pressure. For high values of confining pressure, the predicted results do not agree well with experimental data. In the present study, the criterion was modified by incorporating a new parameter to account for the nonlinearity of frozen soil under high confining pressures. The parameter and instantaneous friction angle for the nonlinear failure envelope were also analyzed. To describe the failure mechanism of frozen soil under complicated stress state, the deviatoric section of strength criterion for frozen soil, in which the Mohr-Coulomb criterion forms the low bound, and the Drucker-Prager criterion forms the upper bound, was obtained, and a united strength criterion was established to take the effect of intermediate principal stress on strength behavior into account. The strength criterion could well reflect the nonlinear strength characteristic of frozen soil under the influence of pressure melting and crushing phenomena. (C) 2012 Elsevier B.V. All rights reserved.
英文关键词	Frozen soil; Strength criterion; Hoek-Brown criterion; Deviatoric plane
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	MOHR-COULOMB ; DEFORMATION ; SAND
WOS记录号	WOS:000314558500009
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/239511
作者单位	[Yang, Yugui; Gao, Feng] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221008, Jiangsu, Peoples R China; [Yang, Yugui; Gao, Feng] China Univ Min & Technol, Sch Mech & Civil Engn, Jiangsu 221116, Peoples R China; [Lai, Yuanming] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yugui,Gao, Feng,Lai, Yuanming. Modified Hoek-Brown criterion for nonlinear strength of frozen soil[J],2013,86.
APA	Yang, Yugui,Gao, Feng,&Lai, Yuanming.(2013).Modified Hoek-Brown criterion for nonlinear strength of frozen soil.COLD REGIONS SCIENCE AND TECHNOLOGY,86.
MLA	Yang, Yugui,et al."Modified Hoek-Brown criterion for nonlinear strength of frozen soil".COLD REGIONS SCIENCE AND TECHNOLOGY 86(2013).