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
发表期刊	ENGINEERING FRACTURE MECHANICS
ISSN	0013-7944
卷号	215 期号:-页码:224-234
摘要	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.
关键词	True triaxial cyclic loading Damage variables Irreversible strain Dissipated energy Brittleness
DOI	10.1016/j.engfracmech.2019.05.011
收录类别	SCI
语种	英语
WOS研究方向	Mechanics
WOS类目	Mechanics
WOS记录号	WOS:000470057600016
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.198/handle/2S6PX9GI/14964
专题	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
作者单位	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
推荐引用方式 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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