Study on damage evolution of intact and jointed marble subjected to cyclic true triaxial loading

doi:10.1016/j.engfracmech.2019.05.011

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	Study on damage evolution of intact and jointed marble subjected to cyclic true triaxial loading
	Gao, Yaohui ; Feng, Xia-Ting
	2019
Source Publication	ENGINEERING FRACTURE MECHANICS
ISSN	0013-7944
Volume	215 Issue:-Pages:224-234
Abstract	Rock masses in underground engineering, such as mining and deep tunnelling engineering, are often repeatedly loaded and unloaded. Here, a series of true triaxial multi-level single cyclic loading tests (sigma(1) > sigma(2) > sigma(3)) were carried out on intact and jointed marble (50 x 50 x 100 mm(3)) to investigate the influence of the stress state and the absence or presence of a joint on the progressive damage process. The test results show that rock damage is directional and anisotropic. The irreversible strains in the sigma(1) and sigma(3) directions change linearly with cumulative damage, whereas the irreversible strains in the sigma(2) direction decrease nonlinearly. The dissipated energy is appropriately linearly related to the equivalent irreversible strains. The damage variables based on the irreversible strains and dissipated energy are closely correlated, as determined by their similar fitted parameters. The stress state (sigma(2) and sigma(3)), the absence or presence of a joint and the brittleness play a vital role in the rock damage evolution. More specifically, the parameter a has a logarithmic relationship with sigma(3) and a linear relationship with sigma(2). The relationship between the parameter a and the joint dip angle beta can be fitted by a Gaussian distribution. In addition, the fitted parameter a decreases with increasing brittleness.
Keyword	True triaxial cyclic loading Damage variables Irreversible strain Dissipated energy Brittleness
DOI	10.1016/j.engfracmech.2019.05.011
Indexed By	SCI
Language	英语
WOS Research Area	Mechanics
WOS Subject	Mechanics
WOS ID	WOS:000470057600016
Citation statistics	Cited Times:10[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://119.78.100.198/handle/2S6PX9GI/14964
Collection	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
Affiliation	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Northeastern Univ, Key Lab Minist Educ Safe Min Deep Met Mines, Shenyang 110819, Liaoning, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation GB/T 7714	Gao, Yaohui,Feng, Xia-Ting. Study on damage evolution of intact and jointed marble subjected to cyclic true triaxial loading[J]. ENGINEERING FRACTURE MECHANICS,2019,215(-):224-234.
APA	Gao, Yaohui,&Feng, Xia-Ting.(2019).Study on damage evolution of intact and jointed marble subjected to cyclic true triaxial loading.ENGINEERING FRACTURE MECHANICS,215(-),224-234.
MLA	Gao, Yaohui,et al."Study on damage evolution of intact and jointed marble subjected to cyclic true triaxial loading".ENGINEERING FRACTURE MECHANICS 215.-(2019):224-234.

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