Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation
In order to study the local deformation of an anchor bolt and the improvement in the shear strength of a structural surface under the misalignment of an anchorage structure surface, FLAC<sup>3D</sup> software was used to simulate granite, sandstone, and coal specimens with anchorage angl...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/1/543 |
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| author | Yinfeng Tang Donghai Jiang Tongxu Wang Hengjie Luan Jiangwei Liu Sunhao Zhang |
| author_facet | Yinfeng Tang Donghai Jiang Tongxu Wang Hengjie Luan Jiangwei Liu Sunhao Zhang |
| author_sort | Yinfeng Tang |
| collection | DOAJ |
| description | In order to study the local deformation of an anchor bolt and the improvement in the shear strength of a structural surface under the misalignment of an anchorage structure surface, FLAC<sup>3D</sup> software was used to simulate granite, sandstone, and coal specimens with anchorage angles of 90° to analyze the damage of the anchoring agent and the changes in the local axial and shear forces of the anchor bolts with the misalignment of the structural surface. The results show that the anchor bolt near the structural surface had significant local characteristics with the misalignment of the structural surface; that is, the length of the local deformation area of the bolt was approximately equal to the length of the damaged area of the anchoring agent, and the stress on the anchor bolt was in a coupled tensile–shear stress state when the bolt reached the yield state. For the fully grouted bolts, it was this significant local feature that made the shear strength of the structural surface increase rapidly under a small shear displacement so that the structural surface reached a stable state. The improvement in the shear strength of the anchoring structural surface was caused by the misalignment of the structural surface. This is referred to as the passive improvement of the shear strength of the anchoring structural surface, which is the mechanism of the bonding section anchor to control the shear displacement of the structural surface and realize the stability of the rock mass. |
| first_indexed | 2024-03-11T10:07:46Z |
| format | Article |
| id | doaj.art-56e81c4aaa4144c5a5ab79a662a31cc9 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T10:07:46Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-56e81c4aaa4144c5a5ab79a662a31cc92023-11-16T14:58:25ZengMDPI AGApplied Sciences2076-34172022-12-0113154310.3390/app13010543Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface DislocationYinfeng Tang0Donghai Jiang1Tongxu Wang2Hengjie Luan3Jiangwei Liu4Sunhao Zhang5Shandong University of Science and Technology, Qingdao 266590, ChinaShandong University of Science and Technology, Qingdao 266590, ChinaShandong University of Science and Technology, Qingdao 266590, ChinaShandong University of Science and Technology, Qingdao 266590, ChinaShandong University of Science and Technology, Qingdao 266590, ChinaSchool of Engineering, Nagasaki University, Nagasaki 852-8521, JapanIn order to study the local deformation of an anchor bolt and the improvement in the shear strength of a structural surface under the misalignment of an anchorage structure surface, FLAC<sup>3D</sup> software was used to simulate granite, sandstone, and coal specimens with anchorage angles of 90° to analyze the damage of the anchoring agent and the changes in the local axial and shear forces of the anchor bolts with the misalignment of the structural surface. The results show that the anchor bolt near the structural surface had significant local characteristics with the misalignment of the structural surface; that is, the length of the local deformation area of the bolt was approximately equal to the length of the damaged area of the anchoring agent, and the stress on the anchor bolt was in a coupled tensile–shear stress state when the bolt reached the yield state. For the fully grouted bolts, it was this significant local feature that made the shear strength of the structural surface increase rapidly under a small shear displacement so that the structural surface reached a stable state. The improvement in the shear strength of the anchoring structural surface was caused by the misalignment of the structural surface. This is referred to as the passive improvement of the shear strength of the anchoring structural surface, which is the mechanism of the bonding section anchor to control the shear displacement of the structural surface and realize the stability of the rock mass.https://www.mdpi.com/2076-3417/13/1/543anchored structural surfaceslocalized deformation of the boltdamage of anchoring agentshear propertiesnumerical simulation |
| spellingShingle | Yinfeng Tang Donghai Jiang Tongxu Wang Hengjie Luan Jiangwei Liu Sunhao Zhang Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation Applied Sciences anchored structural surfaces localized deformation of the bolt damage of anchoring agent shear properties numerical simulation |
| title | Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation |
| title_full | Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation |
| title_fullStr | Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation |
| title_full_unstemmed | Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation |
| title_short | Research on the Mechanism of the Passive Reinforcement of Structural Surface Shear Strength by Bolts under Structural Surface Dislocation |
| title_sort | research on the mechanism of the passive reinforcement of structural surface shear strength by bolts under structural surface dislocation |
| topic | anchored structural surfaces localized deformation of the bolt damage of anchoring agent shear properties numerical simulation |
| url | https://www.mdpi.com/2076-3417/13/1/543 |
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