Experimental Investigation of Anisotropic Wear Damage for Natural Joints under Direct Shearing Test

doi:10.1061/(ASCE)GM.1943-5622.0001617

	Experimental Investigation of Anisotropic Wear Damage for Natural Joints under Direct Shearing Test
	Jiang, Quan 2; Song, Leibo 2; Yan, Fei 2; Liu, Chang 2; Yang, Bin 2; Xiong, Jun 1
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2020-04-01
卷号	20 期号:4 页码:18
关键词	Natural joint Asperity Damage volume Anisotropic shear strength Wear damage
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0001617
英文摘要	The anisotropic morphology of natural joints always affects their shear behavior. This experimental study aimed at exploring the anisotropic wear damage of asperities for natural joints under direct shearing tests. For casting the same joint specimens in batches, a production method for circle joint specimens containing natural joints was presented first by utilizing three-dimensional (3D) scanning and printing technologies. Then, the shear tests for natural and smooth joint specimens were carried out under different shear directions and normal stress to exhibit their anisotropic behavior. These experimental results showed that the contribution of joint asperities to shear performance (such as shear strength, dilatation deformation, and local wear damage) varied with the shear direction and exhibited anisotropic characteristics, and the anisotropy of shear strength weakened gradually with increasing normal stress due to asperity's wear damage. For quantitatively analyzing the wear damage of a joint surface after the shear test, a technical method was also proposed to quantify the damage volume. The corresponding statistical analysis for all the experimental data indicated that the damage volume of natural joints under a shear test accumulates with increasing normal stress, but its values were different along different shear directions. The experimental study provides new clues for deciding the shearing strength parameters of natural joint for rock engineering's design, and can also benefit the stability analysis of jointed rock mass by deeply understanding the natural joint's strength softening and residual strength during shear failure.
资助项目	National Natural Science Foundation of China[51621006] ; National Natural Science Foundation of China[51779251] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences (CAS)[Z017007005]
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000514922800005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23615]
专题	中科院武汉岩土力学所
通讯作者	Yan, Fei
作者单位	1.Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 2W2, Canada 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Quan,Song, Leibo,Yan, Fei,et al. Experimental Investigation of Anisotropic Wear Damage for Natural Joints under Direct Shearing Test[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2020,20(4):18.
APA	Jiang, Quan,Song, Leibo,Yan, Fei,Liu, Chang,Yang, Bin,&Xiong, Jun.(2020).Experimental Investigation of Anisotropic Wear Damage for Natural Joints under Direct Shearing Test.INTERNATIONAL JOURNAL OF GEOMECHANICS,20(4),18.
MLA	Jiang, Quan,et al."Experimental Investigation of Anisotropic Wear Damage for Natural Joints under Direct Shearing Test".INTERNATIONAL JOURNAL OF GEOMECHANICS 20.4(2020):18.