Frost Deformation and a Quasi-Elastic-Plastic-Creep Constitutive Model for Isotropic Freezing Rock

doi:10.1061/(ASCE)GM.1943-5622.0001749

	Frost Deformation and a Quasi-Elastic-Plastic-Creep Constitutive Model for Isotropic Freezing Rock
	Kang, Yongshui 2; Hou, Congcong 2,3; Liu, Bin 2; Liu, Quansheng 1; Sang, Haomin 2,3; Tian, Yongchao 1
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2020-08-01
卷号	20 期号:8 页码:13
关键词	Freeze-thaw action Frost strain Phase transition Constitutive model Freezing degree
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0001749
英文摘要	Freeze-thaw weathering of rock masses in cold regions is mainly caused by the freezing deformation of rock exposed to subfreezing temperature. The deformation behavior of freezing rock is focused on in this research. The phase transition process of the water-ice system in freezing rock is analyzed. A time-dependent variable named freezing degree is applied to describe the percentage of water phase changed into ice in the rock. The mechanical character of the freezing rock is investigated based on compression tests of freezing sandstone. Accordingly, the strength and yield criteria for freezing rock are analyzed. Next, a quasi-elastic-plastic-creep model is proposed to describe the time-dependent behavior of freezing rock. The total strain of freezing rock is decomposed into three parts, including the thermal strain of the rock matrix, the strain caused by the confining pressure, and the freezing strain caused by the phase transition of water in the rock. The freezing degree function is applied in the constitutive model, which is further redeveloped using the programming language VC++. Finally, a tunnel in a cold region is simulated using the new constitutive model. The result indicates that the new model can simulate the time-dependent behavior of freezing rock.
资助项目	Youth Innovation Promotion Association CAS[2017377] ; National Natural Science Foundation of China[51774267] ; China National Key Basic Research Development Plan (973 Plan)[2014CB046900]
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000545985000017
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24478]
专题	中科院武汉岩土力学所
通讯作者	Liu, Quansheng
作者单位	1.Wuhan Univ, Sch Civil Engn & Architecture, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Kang, Yongshui,Hou, Congcong,Liu, Bin,et al. Frost Deformation and a Quasi-Elastic-Plastic-Creep Constitutive Model for Isotropic Freezing Rock[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2020,20(8):13.
APA	Kang, Yongshui,Hou, Congcong,Liu, Bin,Liu, Quansheng,Sang, Haomin,&Tian, Yongchao.(2020).Frost Deformation and a Quasi-Elastic-Plastic-Creep Constitutive Model for Isotropic Freezing Rock.INTERNATIONAL JOURNAL OF GEOMECHANICS,20(8),13.
MLA	Kang, Yongshui,et al."Frost Deformation and a Quasi-Elastic-Plastic-Creep Constitutive Model for Isotropic Freezing Rock".INTERNATIONAL JOURNAL OF GEOMECHANICS 20.8(2020):13.