Investigation on the Shear Behavior of Rough Rock Joints Prepared by Three-Dimensional Engraving Technique

2022 ◽  
Vol 50 (3) ◽  
pp. 20210282
Author(s):  
Xiaobo Zhang ◽  
Xi Zhu ◽  
Chi Yao ◽  
Shu Ouyang ◽  
Jianhua Yang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Shear Behavior ◽  
Rock Joints

A Constitutive Model for Shear Behavior of Rock Joints Based on Three-Dimensional Quantification of Joint Roughness

2013 ◽  
Vol 46 (6) ◽  
pp. 1513-1537 ◽  
Author(s):  
Jung-Wook Park ◽  
Yong-Ki Lee ◽  
Jae-Joon Song ◽  
Byung-Hee Choi
Keyword(s):  
Constitutive Model ◽  
Three Dimensional ◽  
Shear Behavior ◽  
Rock Joints ◽  
Joint Roughness

scholarly journals Three-Dimensional Combined Finite-Discrete Element Modeling of Shear Fracture Process in Direct Shearing of Rough Concrete–Rock Joints

2020 ◽  
Vol 10 (22) ◽  
pp. 8033
Author(s):  
Gyeongjo Min ◽  
Daisuke Fukuda ◽  
Sewook Oh ◽  
Gyeonggyu Kim ◽  
Younghun Ko ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Internal Friction ◽  
Fracture Process ◽  
Three Dimensional ◽  
Friction Angle ◽  
Discrete Element ◽  
Shear Resistance ◽  
Internal Friction Angle ◽  
Rock Joints ◽  
Joint Shear

A three-dimensional combined finite-discrete element element method (FDEM), parallelized by a general-purpose graphic-processing-unit (GPGPU), was applied to identify the fracture process of rough concrete–rock joints under direct shearing. The development process of shear resistance under the complex interaction between the rough concrete–rock joint surfaces, i.e., asperity dilatation, sliding, and degradation, was numerically simulated in terms of various asperity roughness under constant normal confinement. It was found that joint roughness significantly affects the development of overall joint shear resistance. The main mechanism for the joint shear resistance was identified as asperity sliding in the case of smoother joint roughness and asperity degradation in the case of rougher joint asperity. Moreover, it was established that the bulk internal friction angle increased with asperity angle increments in the Mohr–Coulomb criterion, and these results follow Patton’s theoretical model. Finally, the friction coefficient in FDEM appears to be an important parameter for simulating the direct shear test because the friction coefficient affects the bulk shear strength as well as the bulk internal friction angle. In addition, the friction coefficient of the rock–concrete joints contributes to the variation of the internal friction angle at the smooth joint than the rough joint.

Shear Behavior of Regular Triangular Concrete/Rock Joints—Evaluation

1989 ◽  
Vol 115 (5) ◽  
pp. 728-740 ◽  
Author(s):  
Thomas S. K. Lam ◽  
Ian W. Johnston
Keyword(s):  
Shear Behavior ◽  
Rock Joints

New criterion for rock joints based on three-dimensional roughness parameters

2014 ◽  
Vol 21 (12) ◽  
pp. 4653-4659 ◽  
Author(s):  
Zhi-cheng Tang ◽  
Quan-sheng Liu ◽  
Ji-hui Huang
Keyword(s):  
Three Dimensional ◽  
Rock Joints ◽  
Roughness Parameters ◽  
New Criterion

Macro and meso characteristics evolution on shear behavior of rock joints

2015 ◽  
Vol 22 (8) ◽  
pp. 3087-3096 ◽  
Author(s):  
Kai-hui Li ◽  
Ping Cao ◽  
Ke Zhang ◽  
Yong-fang Zhong
Keyword(s):  
Shear Behavior ◽  
Rock Joints

scholarly journals Effect of Joint Characteristics and Geometries on Tunnel-Type Anchorage for Suspension Bridge

2021 ◽  
Vol 11 (24) ◽  
pp. 11688
Author(s):  
Hyunsung Lim ◽  
Seunghwan Seo ◽  
Junyoung Ko ◽  
Moonkyung Chung
Keyword(s):  
Rock Joint ◽  
Three Dimensional ◽  
Suspension Bridge ◽  
Friction Angle ◽  
Rock Joints ◽  
Joint Orientation ◽  
Pull Out ◽  
Joint Characteristics ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

In this study, the pull-out behavior of a tunnel-type anchorage was examined by considering both geometric and rock joint characteristics. Three-dimensional finite element analyses were performed with reference to the tunnel-type anchorage cases designed and constructed in Korea. The factors influencing the anchorage response were analyzed: the enlarged part, anchorage spacing, joint orientation, spacing, and the shear strength of the rock joints. According to the numerical studies, the size of the enlarged part influenced the failure shape of the tunnel-type anchorage. It was found that the anchorage spacing, the relationship between the tunnel-type anchorage, and the joint orientation and spacing greatly influenced the pull-out behavior of the anchorage. Additionally, the friction angle had a larger impact on the anchorage’s pull-out resistance than the cohesion between the rock joints.

scholarly journals Shear Behavior Characteristics of Rock Joints Considering Roughness Parameters

2016 ◽  
Vol 26 (5) ◽  
pp. 384-395
Author(s):  
Dong-Kyu Kim ◽  
Young-Ki Hong ◽  
Jong-Woo Kim
Keyword(s):  
Shear Behavior ◽  
Rock Joints ◽  
Roughness Parameters ◽  
Behavior Characteristics

The Effect of Asperity Inclination and Orientation on the Shear Behavior of Rock Joints

2013 ◽  
Vol 36 (3) ◽  
pp. 20120060 ◽  
Author(s):  
Ali Khosravi ◽  
Mohammad H. Sadaghiani ◽  
Mohammad Khosravi ◽  
Christopher L. Meehan
Keyword(s):  
Shear Behavior ◽  
Rock Joints
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