Bearing Characteristics of Rock Joints under Different Bolts Installation Angles and Their Underlying Mechanism
To explore the mechanical failure characteristics of bolted joints under different bolt installation angles and the effect of bolting on the shear strength of joints, a numerical model of structural plane anchoring with different bolt installation angles was established based on the improved Pile el...
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| Veröffentlicht in: | Sustainability 2023-09, Vol.15 (17), p.12876 |
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| creator | Liu, Jianrong Wang, Rongchao Luan, Hengjie Zuo, Haifeng Jiang, Yujing Zhang, Sunhao Li, Xinpeng |
| description | To explore the mechanical failure characteristics of bolted joints under different bolt installation angles and the effect of bolting on the shear strength of joints, a numerical model of structural plane anchoring with different bolt installation angles was established based on the improved Pile element, and a series of uniaxial compression numerical tests were carried out to systematically study the effects of bolt installation angle on bolts. The results show that as the bolt installation angle increases, the peak stress of the specimen is first constant and then decreases, and the elastic modulus of the specimen decreases nonlinearly. When the bolt installation angle is lower than 45°, the bearing capacity of the joints is higher. The interaction between the bolt and the specimen’s force is mainly concentrated at the intersection of the structural plane and the area where the nut gaskets are installed at both ends of the bolt. The horizontal stress is higher in the area where the nut gaskets are installed at both ends of the bolt. With an increase in bolt installation angle, the plastic zone volume of the anchored joint specimen increases linearly with an exponential function. When the bolt installation angle is lower than 45°, the plastic zone volume increases slowly, and when the bolt installation angle is higher than 45°, the plastic zone volume increases rapidly. When the bolt installation angle is small, the contribution of the bolt axial force is greater than that of the bolt shear force. In contrast, when the bolt installation angle is large, the contribution of the bolt axial force is lower than the contribution of the bolt shear force. With an increase in bolt installation angle, the contribution of the bolt axial force decreases nonlinearly, the contribution of the bolt shear force increases linearly, and the shear resistance decreases nonlinearly. The optimal bolt installation angle is about 45°, but the optimal bolt installation angle also changes constantly under the influence of factors such as bolt type, rock strength, and external load. |
| doi_str_mv | 10.3390/su151712876 |
| format | Article |
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The results show that as the bolt installation angle increases, the peak stress of the specimen is first constant and then decreases, and the elastic modulus of the specimen decreases nonlinearly. When the bolt installation angle is lower than 45°, the bearing capacity of the joints is higher. The interaction between the bolt and the specimen’s force is mainly concentrated at the intersection of the structural plane and the area where the nut gaskets are installed at both ends of the bolt. The horizontal stress is higher in the area where the nut gaskets are installed at both ends of the bolt. With an increase in bolt installation angle, the plastic zone volume of the anchored joint specimen increases linearly with an exponential function. When the bolt installation angle is lower than 45°, the plastic zone volume increases slowly, and when the bolt installation angle is higher than 45°, the plastic zone volume increases rapidly. When the bolt installation angle is small, the contribution of the bolt axial force is greater than that of the bolt shear force. In contrast, when the bolt installation angle is large, the contribution of the bolt axial force is lower than the contribution of the bolt shear force. With an increase in bolt installation angle, the contribution of the bolt axial force decreases nonlinearly, the contribution of the bolt shear force increases linearly, and the shear resistance decreases nonlinearly. The optimal bolt installation angle is about 45°, but the optimal bolt installation angle also changes constantly under the influence of factors such as bolt type, rock strength, and external load.</description><identifier>ISSN: 2071-1050</identifier><identifier>EISSN: 2071-1050</identifier><identifier>DOI: 10.3390/su151712876</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Boundary conditions ; Coal mining ; Deformation ; Friction ; Mechanical properties ; Quantitative analysis ; Roads & highways ; Shear strength ; Shear tests ; Simulation ; Stress analysis</subject><ispartof>Sustainability, 2023-09, Vol.15 (17), p.12876</ispartof><rights>COPYRIGHT 2023 MDPI AG</rights><rights>2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c329t-edbd0275878b6e12c0f6c52f4406f83f826d8c512641f2443e001af00b166d893</cites><orcidid>0000-0003-3664-1216 ; 0000-0002-4020-5989 ; 0000-0001-7370-8550</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27922,27923</link.rule.ids></links><search><creatorcontrib>Liu, Jianrong</creatorcontrib><creatorcontrib>Wang, Rongchao</creatorcontrib><creatorcontrib>Luan, Hengjie</creatorcontrib><creatorcontrib>Zuo, Haifeng</creatorcontrib><creatorcontrib>Jiang, Yujing</creatorcontrib><creatorcontrib>Zhang, Sunhao</creatorcontrib><creatorcontrib>Li, Xinpeng</creatorcontrib><title>Bearing Characteristics of Rock Joints under Different Bolts Installation Angles and Their Underlying Mechanism</title><title>Sustainability</title><description>To explore the mechanical failure characteristics of bolted joints under different bolt installation angles and the effect of bolting on the shear strength of joints, a numerical model of structural plane anchoring with different bolt installation angles was established based on the improved Pile element, and a series of uniaxial compression numerical tests were carried out to systematically study the effects of bolt installation angle on bolts. The results show that as the bolt installation angle increases, the peak stress of the specimen is first constant and then decreases, and the elastic modulus of the specimen decreases nonlinearly. When the bolt installation angle is lower than 45°, the bearing capacity of the joints is higher. The interaction between the bolt and the specimen’s force is mainly concentrated at the intersection of the structural plane and the area where the nut gaskets are installed at both ends of the bolt. The horizontal stress is higher in the area where the nut gaskets are installed at both ends of the bolt. With an increase in bolt installation angle, the plastic zone volume of the anchored joint specimen increases linearly with an exponential function. When the bolt installation angle is lower than 45°, the plastic zone volume increases slowly, and when the bolt installation angle is higher than 45°, the plastic zone volume increases rapidly. When the bolt installation angle is small, the contribution of the bolt axial force is greater than that of the bolt shear force. In contrast, when the bolt installation angle is large, the contribution of the bolt axial force is lower than the contribution of the bolt shear force. With an increase in bolt installation angle, the contribution of the bolt axial force decreases nonlinearly, the contribution of the bolt shear force increases linearly, and the shear resistance decreases nonlinearly. The optimal bolt installation angle is about 45°, but the optimal bolt installation angle also changes constantly under the influence of factors such as bolt type, rock strength, and external load.</description><subject>Boundary conditions</subject><subject>Coal mining</subject><subject>Deformation</subject><subject>Friction</subject><subject>Mechanical properties</subject><subject>Quantitative analysis</subject><subject>Roads & highways</subject><subject>Shear strength</subject><subject>Shear tests</subject><subject>Simulation</subject><subject>Stress analysis</subject><issn>2071-1050</issn><issn>2071-1050</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpVkU1vwjAMhqtpk4YYp_2BSDtNEywfbdoegX0xMU1icK5C6kBYSViSSuPfL4gdwD7Ysp_XluwkuSV4wFiJH31LMpITWuT8IulQnJM-wRm-PMmvk573GxyNMVIS3knsCITTZoXGa-GEDOC0D1p6ZBWaWfmN3q02waPW1ODQk1YKHJiARraJ1YnxQTSNCNoaNDSrBjwSpkbzNWiHFgdNsz9M_wC5Fkb77U1ypUTjofcfu8ni5Xk-futPP18n4-G0LxktQx_qZY1pnhV5seRAqMSKy4yqNMVcFUwVlNeFzAjlKVE0TRlgTITCeEl47JSsm9wd5-6c_WnBh2pjW2fiyooWnOaUYZJHanCkVqKBShtlQzxC9Bq2WloDSsf6MOdpyrOSsyi4PxNEJsBvWInW-2ryNTtnH46sdNZ7B6raOb0Vbl8RXB0-Vp18jP0BR1uHCw</recordid><startdate>20230901</startdate><enddate>20230901</enddate><creator>Liu, Jianrong</creator><creator>Wang, Rongchao</creator><creator>Luan, Hengjie</creator><creator>Zuo, Haifeng</creator><creator>Jiang, Yujing</creator><creator>Zhang, Sunhao</creator><creator>Li, Xinpeng</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope><scope>4U-</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><orcidid>https://orcid.org/0000-0003-3664-1216</orcidid><orcidid>https://orcid.org/0000-0002-4020-5989</orcidid><orcidid>https://orcid.org/0000-0001-7370-8550</orcidid></search><sort><creationdate>20230901</creationdate><title>Bearing Characteristics of Rock Joints under Different Bolts Installation Angles and Their Underlying Mechanism</title><author>Liu, Jianrong ; Wang, Rongchao ; Luan, Hengjie ; Zuo, Haifeng ; Jiang, Yujing ; Zhang, Sunhao ; Li, Xinpeng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c329t-edbd0275878b6e12c0f6c52f4406f83f826d8c512641f2443e001af00b166d893</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Boundary conditions</topic><topic>Coal mining</topic><topic>Deformation</topic><topic>Friction</topic><topic>Mechanical properties</topic><topic>Quantitative analysis</topic><topic>Roads & highways</topic><topic>Shear strength</topic><topic>Shear tests</topic><topic>Simulation</topic><topic>Stress analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Jianrong</creatorcontrib><creatorcontrib>Wang, Rongchao</creatorcontrib><creatorcontrib>Luan, Hengjie</creatorcontrib><creatorcontrib>Zuo, Haifeng</creatorcontrib><creatorcontrib>Jiang, Yujing</creatorcontrib><creatorcontrib>Zhang, Sunhao</creatorcontrib><creatorcontrib>Li, Xinpeng</creatorcontrib><collection>CrossRef</collection><collection>Gale In Context: Science</collection><collection>University Readers</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><jtitle>Sustainability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Jianrong</au><au>Wang, Rongchao</au><au>Luan, Hengjie</au><au>Zuo, Haifeng</au><au>Jiang, Yujing</au><au>Zhang, Sunhao</au><au>Li, Xinpeng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Bearing Characteristics of Rock Joints under Different Bolts Installation Angles and Their Underlying Mechanism</atitle><jtitle>Sustainability</jtitle><date>2023-09-01</date><risdate>2023</risdate><volume>15</volume><issue>17</issue><spage>12876</spage><pages>12876-</pages><issn>2071-1050</issn><eissn>2071-1050</eissn><abstract>To explore the mechanical failure characteristics of bolted joints under different bolt installation angles and the effect of bolting on the shear strength of joints, a numerical model of structural plane anchoring with different bolt installation angles was established based on the improved Pile element, and a series of uniaxial compression numerical tests were carried out to systematically study the effects of bolt installation angle on bolts. The results show that as the bolt installation angle increases, the peak stress of the specimen is first constant and then decreases, and the elastic modulus of the specimen decreases nonlinearly. When the bolt installation angle is lower than 45°, the bearing capacity of the joints is higher. The interaction between the bolt and the specimen’s force is mainly concentrated at the intersection of the structural plane and the area where the nut gaskets are installed at both ends of the bolt. The horizontal stress is higher in the area where the nut gaskets are installed at both ends of the bolt. With an increase in bolt installation angle, the plastic zone volume of the anchored joint specimen increases linearly with an exponential function. When the bolt installation angle is lower than 45°, the plastic zone volume increases slowly, and when the bolt installation angle is higher than 45°, the plastic zone volume increases rapidly. When the bolt installation angle is small, the contribution of the bolt axial force is greater than that of the bolt shear force. In contrast, when the bolt installation angle is large, the contribution of the bolt axial force is lower than the contribution of the bolt shear force. With an increase in bolt installation angle, the contribution of the bolt axial force decreases nonlinearly, the contribution of the bolt shear force increases linearly, and the shear resistance decreases nonlinearly. The optimal bolt installation angle is about 45°, but the optimal bolt installation angle also changes constantly under the influence of factors such as bolt type, rock strength, and external load.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/su151712876</doi><orcidid>https://orcid.org/0000-0003-3664-1216</orcidid><orcidid>https://orcid.org/0000-0002-4020-5989</orcidid><orcidid>https://orcid.org/0000-0001-7370-8550</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Boundary conditions Coal mining Deformation Friction Mechanical properties Quantitative analysis Roads & highways Shear strength Shear tests Simulation Stress analysis |
| title | Bearing Characteristics of Rock Joints under Different Bolts Installation Angles and Their Underlying Mechanism |
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