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	A Fractional Creep Constitutive Model for Frozen Soil in Consideration of the Strengthening and Weakening Effects
	Hou, Feng1; Li, Quanming2; Liu, Enlong1,3; Zhou, Cheng1; Liao, Mengke3; Luo, Huiwu1; Liu, Xingyan3
刊名	ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
	2016
页码	12
ISSN号	1687-8434
DOI	10.1155/2016/5740292
通讯作者	Liu, Enlong(liuenlong@lzb.ac.cn)
英文摘要	The triaxial creep tests of frozen silty clay mixed with sands were performed under different pressures, and the test results demonstrated that, under the low confining pressure, when the shear stress is lower than the long-term strength, the test specimen exhibits an attenuation creep because the strengthening effect is greater than the weakening effect. When the shear stress is higher than the long-termstrength, the test specimen exhibits a nonattenuation creep due to the level of the strengthening and weakening effects change in different stages. As the confining pressure increases, the test specimens only exhibit an attenuation creep because of the enhancing strengthening effect. Both the hardening parameter and the damage variable were introduced to describe the strengthening and weakening effects, respectively, and a new creep constitutive model for frozen soil considering these effects was put forward based on the theory of elastoviscoplastic and the fractional derivative. Finally, the model parameters were analyzed and their determinationmethod was also provided to reveal the trend of parameters according to the triaxial test results. The calculated results of the constitutive model show that the proposed model can describe the whole creep process of frozen soil well.
收录类别	SCI
WOS关键词	PERMAFROST REGIONS ; SALT ROCK ; EMBANKMENTS ; IMAGES
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
语种	英语
出版者	HINDAWI PUBLISHING CORP
WOS记录号	WOS:000376896300001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557252
专题	寒区旱区环境与工程研究所
通讯作者	Liu, Enlong
作者单位	1.Sichuan Univ, Coll Water Resources & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China 2.China Acad Safety Sci & Technol, Beijing 10012, Peoples R China 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Hou, Feng,Li, Quanming,Liu, Enlong,et al. A Fractional Creep Constitutive Model for Frozen Soil in Consideration of the Strengthening and Weakening Effects[J]. ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2016:12.
APA	Hou, Feng.,Li, Quanming.,Liu, Enlong.,Zhou, Cheng.,Liao, Mengke.,...&Liu, Xingyan.(2016).A Fractional Creep Constitutive Model for Frozen Soil in Consideration of the Strengthening and Weakening Effects.ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,12.
MLA	Hou, Feng,et al."A Fractional Creep Constitutive Model for Frozen Soil in Consideration of the Strengthening and Weakening Effects".ADVANCES IN MATERIALS SCIENCE AND ENGINEERING (2016):12.

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