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	Experimental and theoretical studies on the creep behavior of warm ice-rich frozen sand
	Yang, Yugui; Lai, Yuanming; Chang, Xiaoxiao
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2010-08-01
卷号	63期号:1-2页码:61-67
关键词	Warm ice-rich frozen sand Creep Constitutive model Stability of embankment
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2010.04.011
通讯作者	Lai, Yuanming(ymlai@lzb.ac.cn)
英文摘要	It is recognized experimentally that the creep property of warm ice-rich frozen soils will cause a significant deformation, which affects the stability of infrastructure constructed in permafrost regions. In this paper, the creep behavior of warm ice-rich frozen sand is investigated through a series of experimental data under different stress levels at temperatures of -1.0 degrees C, -1.5 degrees C and -2.0 degrees C, respectively. The results showed that the creep characteristic of warm ice-rich frozen sand is greatly affected by the stress levels. The creep curves mainly present the decaying and the stable creep stages under low stress levels. However, under high stress levels, once the strain increasing to critical value, the creep strain velocity gradually increases and the specimen quickly happen to destroy. To reproduce the creep process of warm ice-rich frozen sand, a statistical damage constitutive model, in which the Weibull function is employed to describe the random distribution of inner flaw in creep process, is proposed based on the experimental results. The validity of the model is verified by comparing its modeling results with the results of creep tests both under low and high stress levels. It is found that the results predicted by this model agree well with the corresponding experimental data. (C) 2010 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	DAMAGE CONSTITUTIVE MODEL ; QINGHAI-TIBET RAILWAY ; TEMPERATURE ; EMBANKMENT ; CLAY
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:000280023600007
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556333
专题	寒区旱区环境与工程研究所
通讯作者	Lai, Yuanming
作者单位	Chinese Acad Sci, Lanzhou Inst Chem Phys, 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. Experimental and theoretical studies on the creep behavior of warm ice-rich frozen sand[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2010,63(1-2):61-67.
APA	Yang, Yugui,Lai, Yuanming,&Chang, Xiaoxiao.(2010).Experimental and theoretical studies on the creep behavior of warm ice-rich frozen sand.COLD REGIONS SCIENCE AND TECHNOLOGY,63(1-2),61-67.
MLA	Yang, Yugui,et al."Experimental and theoretical studies on the creep behavior of warm ice-rich frozen sand".COLD REGIONS SCIENCE AND TECHNOLOGY 63.1-2(2010):61-67.

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