Macro-Micro Failure Mechanisms and Damage Modeling of a Bolted Rock Joint
Joint Authors
Jiang, Yujing
Wang, Gang
Zhang, Yongzheng
Wang, Shugang
Jing, Wenjun
Source
Advances in Materials Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-31
Country of Publication
Egypt
No. of Pages
15
Abstract EN
The anchoring mechanism of a bolted joint subjected to a shear load was investigated using a bilinear constitutive model via the inner-embedded FISH language of particle flow code based on the discrete element method.
The influences of the anchoring system on the macro-/micromechanical response were studied by varying the inclination angle of the bolt.
The results indicate a clear relationship between the mechanical response of a bolted rock joint and the mechanical properties of the anchoring angle.
By optimizing the anchorage angle, the peak strength can be increased by nearly 50% relative to that at an anchorage angle of 90°.
The optimal anchorage angle ranges from 45° to 75°.
The damage mechanism at the optimal anchorage angle joint is revealed from a macroscopic mechanical perspective.
The concentration of the contact force between disks will appear in the joint and around the bolt, resulting in crack initiation.
These cracks are mainly tensile cracks, which are consistent with the formation mechanism for compression-induced tensile cracks.
Therefore, the macroscopic peak shear stress in the joint and the microscopic damage to the anchoring system should be considered when determining the optimal anchoring angle to reinforce a jointed rock mass.
American Psychological Association (APA)
Wang, Gang& Zhang, Yongzheng& Jiang, Yujing& Wang, Shugang& Jing, Wenjun. 2017. Macro-Micro Failure Mechanisms and Damage Modeling of a Bolted Rock Joint. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1123565
Modern Language Association (MLA)
Wang, Gang…[et al.]. Macro-Micro Failure Mechanisms and Damage Modeling of a Bolted Rock Joint. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1123565
American Medical Association (AMA)
Wang, Gang& Zhang, Yongzheng& Jiang, Yujing& Wang, Shugang& Jing, Wenjun. Macro-Micro Failure Mechanisms and Damage Modeling of a Bolted Rock Joint. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1123565
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1123565