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DOI	10.1016/j.ijplas.2020.102683
	Thermo-poromechanics-based viscoplastic damage constitutive model for saturated frozen soil
	Liu, Enlong; Lai, Yuanming
发表日期	2020
ISSN	0749-6419
EISSN	1879-2154
卷号	128
英文摘要	This study is primarily intended to present a viscoplastic damage theory for saturated frozen soil based on thermo-poromechanics. On the basis of the irreversible process of thermodynamics, an elasto-viscoplastic damage constitutive theoretical framework for saturated frozen soils is formulated by use of the Lagrangian saturation and solid-fluid interface interactions, for which the upscaling microscopic properties of saturated frozen soil in plasticity are provided to elucidate the macro stress-strain relation. Furthermore, a corresponding constitutive model for simulating the cryogenic triaxial stress state of saturated frozen soils is presented to take the influence of creep and loading strain rate into account. Compared with the cryogenic triaxial tests on saturated frozen soils, it is demonstrated that the time-dependent model proposed here can simulate the salient properties of frozen soils under constant shear stress and loading strain rate conditions. The constitutive theory proposed here provides a potential basis for analyzing the stress deformation considering the effects of creep and loading strain rate for saturated frozen soils in cold regions.
英文关键词	Poromechanics; Saturated frozen soils; Viscoplastic constitutive theory; Thermodynamics; Time-dependent features; Microporomechanics
语种	英语
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
WOS关键词	ELASTOPLASTIC MODEL ; DEPENDENT BEHAVIOR ; CREEP MODEL ; PLASTICITY ; FORMULATION ; VISCOELASTICITY ; CRITERION ; EQUATIONS ; FRAMEWORK ; CONCRETE
WOS记录号	WOS:000522635500017
来源期刊	INTERNATIONAL JOURNAL OF PLASTICITY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239575
作者单位	[Liu, Enlong; Lai, Yuanming] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Liu, Enlong] Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Nat River Engn, Chengdu 610065, Peoples R China; [Lai, Yuanming] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Enlong,Lai, Yuanming. Thermo-poromechanics-based viscoplastic damage constitutive model for saturated frozen soil[J]. 中国科学院西北生态环境资源研究院,2020,128.
APA	Liu, Enlong,&Lai, Yuanming.(2020).Thermo-poromechanics-based viscoplastic damage constitutive model for saturated frozen soil.INTERNATIONAL JOURNAL OF PLASTICITY,128.
MLA	Liu, Enlong,et al."Thermo-poromechanics-based viscoplastic damage constitutive model for saturated frozen soil".INTERNATIONAL JOURNAL OF PLASTICITY 128(2020).