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DOI	10.1007/s10064-021-02361-9
	A study on crack damage stress and the damage constitutive model of frozen sandstone
	Ming, Feng; Zhang, Shujuan; Niu, Fujun; Zhou, Zhiwei
通讯作者	Ming, F ; Zhang, SJ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	1435-9529
EISSN	1435-9537
起始页码	6955
结束页码	6970
卷号	80 期号:9
英文摘要	The artificial ground freezing (AGF) method has been widely used in underground engineering construction. As the main load-bearing elements of the AGF method, the strength of frozen walls is expected to play a crucial role in engineering stability. To improve the accuracy of quantitative evaluations of engineering stability, it is necessary to grasp the strength characteristics of frozen rock during service. To achieve this, the red sandstone taken from a frozen shaft project was tested via triaxial compression at different temperatures (-5 degrees C,-10 degrees C,-15 degrees C,-20 degrees C,-25 degrees C, and -30 degrees C). After that, a damage constitutive model with a Weibull distribution was derived to characterize the damage development of the frozen sandstone. Based on the validated model, the variation of damage degree was analyzed. The results show that the crack initiation stress, crack dilation stress, and peak strength all increase with decreasing temperature. The crack damage threshold increases as the frozen sandstone strength increases. The presented damage constitutive model can reflect the damage evolution of frozen sandstone. When the stress exceeds the crack initiation stress, the damage degree begins to increase, and it increases quickly when the stress approaches the peak strength. The model parameters can reflect the influence of negative temperatures on the strength of frozen sandstone. The crack damage threshold could be treated as an essential intrinsic property for predicting the failure process of frozen sandstones. The results can provide an important reference for the design and construction of frozen ground engineering.
关键词	FREEZE-THAW ROCK INITIATION FRACTURE TUNNEL
英文关键词	Artificial ground freezing; Frozen sandstone; Crack damage threshold; Damage evolution
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000672108500002
来源期刊	BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
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/253667
作者单位	[Ming, Feng; Zhang, Shujuan; Niu, Fujun; Zhou, Zhiwei] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Ming, Feng,Zhang, Shujuan,Niu, Fujun,et al. A study on crack damage stress and the damage constitutive model of frozen sandstone[J]. 中国科学院西北生态环境资源研究院,2021,80(9).
APA	Ming, Feng,Zhang, Shujuan,Niu, Fujun,&Zhou, Zhiwei.(2021).A study on crack damage stress and the damage constitutive model of frozen sandstone.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,80(9).
MLA	Ming, Feng,et al."A study on crack damage stress and the damage constitutive model of frozen sandstone".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 80.9(2021).