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DOI	10.1016/j.coldregions.2009.02.010
	An improved statistical damage constitutive model for warm frozen clay based on Mohr-Coulomb criterion
	Li, Shuangyang; Lai, Yuanming; Zhang, Shujuan; Liu, Deren
发表日期	2009
ISSN	0165-232X
起始页码	154
结束页码	159
卷号	57 期号:2-3
英文摘要	There are many microdefects distributed randomly in frozen soil, which will lead to great uncertainty and randomness of mechanical properties and behaviors under applied load, therefore, it is more scientific to study stress-strain relationship of frozen soil by stochastic method instead of deterministic way. For the warm frozen clay and warm ice-rich frozen clay, a stochastic damage constitutive model has been proposed on the foundation of a large number of experimental data, in which the axial strain is regarded as random variable. In this paper, according to these experimental data under three temperature conditions (-0.5 degrees C, -1.5 degrees C and -2.0 degrees C) and the above research results, the strength of soil element is selected as random variable and an improved statistical damage constitutive model is deduced, and in this new model, the Mohr-Coulomb failure criterion is also used to judge whether the soil element is damaged. Finally, compared with original model, it is found that the new improved model can better describe the experimental data and reflect deformation characteristics. Especially, when the stress reaches its peak value, the experimental data and new theoretical curves overlap with each other. (C) 2009 Elsevier B.V. All rights reserved.
英文关键词	Warm frozen clay; Warm ice-rich frozen clay; Statistical damage constitutive model; Mohr-Coulomb criterion
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS记录号	WOS:000267153300011
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/239532
作者单位	[Li, Shuangyang; Lai, Yuanming; Zhang, Shujuan; Liu, Deren] 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	Li, Shuangyang,Lai, Yuanming,Zhang, Shujuan,et al. An improved statistical damage constitutive model for warm frozen clay based on Mohr-Coulomb criterion[J],2009,57(2-3).
APA	Li, Shuangyang,Lai, Yuanming,Zhang, Shujuan,&Liu, Deren.(2009).An improved statistical damage constitutive model for warm frozen clay based on Mohr-Coulomb criterion.COLD REGIONS SCIENCE AND TECHNOLOGY,57(2-3).
MLA	Li, Shuangyang,et al."An improved statistical damage constitutive model for warm frozen clay based on Mohr-Coulomb criterion".COLD REGIONS SCIENCE AND TECHNOLOGY 57.2-3(2009).