Study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditions
Under cyclic load conditions, rock mass engineering such as tunnels and underground storage is prone to large deformation and collapse due to the gradual deterioration of surrounding rock performance. It is of great significance to study the shear characteristics of rock joints and macro-mesoscopic...
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2025-06-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2025007 |
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| author | WANG Gang SONG Qi WANG Pengju WU Xuezhen ZHANG Yeqiang DUAN Rongmei |
| author_facet | WANG Gang SONG Qi WANG Pengju WU Xuezhen ZHANG Yeqiang DUAN Rongmei |
| author_sort | WANG Gang |
| collection | DOAJ |
| description | Under cyclic load conditions, rock mass engineering such as tunnels and underground storage is prone to large deformation and collapse due to the gradual deterioration of surrounding rock performance. It is of great significance to study the shear characteristics of rock joints and macro-mesoscopic mechanism for evaluating the service safety of rock mass engineering under cyclic load conditions. Joint specimens were prepared with high strength gypsum, cyclic shear tests were carried out under constant normal load, and the numerical simulation method of finite element and discrete element coupling was used. The results show that the greater the roughness of joint surface, the greater the peak shear strength. In the same number of cycles, the peak shear strength decreases with the increase of cyclic shear displacement. The average dilatancy angle decreases with the increase of the number of cycles. In the same number of cycles, the average dilatancy angle decreases with the increase of cyclic shear displacement and increases with the increase of joint roughness. With the progress of cyclic shear, the stress evolution tends to be stable, and the number of cracks decreases with the increase of cyclic shear cycles. |
| format | Article |
| id | doaj-art-e31eb61d062240b5b4ec76ab9cb0a52b |
| institution | OA Journals |
| issn | 2096-2193 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj-art-e31eb61d062240b5b4ec76ab9cb0a52b2025-08-20T02:24:14ZengEmergency Management Press矿业科学学报2096-21932025-06-0110343544610.19606/j.cnki.jmst.2025007kykxxb-10-3-435Study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditionsWANG Gang0SONG Qi1WANG Pengju2WU Xuezhen3ZHANG Yeqiang4DUAN Rongmei5Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao Shandong 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao Shandong 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao Shandong 266590, ChinaCollege of Civil Engineering, Fuzhou University, Fuzhou Fujian 350116, ChinaChina Construction Fourth Engineering Bureau Co., Ltd., Xiamen Fujian 361000, ChinaShandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao Shandong 266590, ChinaUnder cyclic load conditions, rock mass engineering such as tunnels and underground storage is prone to large deformation and collapse due to the gradual deterioration of surrounding rock performance. It is of great significance to study the shear characteristics of rock joints and macro-mesoscopic mechanism for evaluating the service safety of rock mass engineering under cyclic load conditions. Joint specimens were prepared with high strength gypsum, cyclic shear tests were carried out under constant normal load, and the numerical simulation method of finite element and discrete element coupling was used. The results show that the greater the roughness of joint surface, the greater the peak shear strength. In the same number of cycles, the peak shear strength decreases with the increase of cyclic shear displacement. The average dilatancy angle decreases with the increase of the number of cycles. In the same number of cycles, the average dilatancy angle decreases with the increase of cyclic shear displacement and increases with the increase of joint roughness. With the progress of cyclic shear, the stress evolution tends to be stable, and the number of cracks decreases with the increase of cyclic shear cycles.http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2025007rock jointcyclic shearshear characteristicscohesive elementcrack propagation |
| spellingShingle | WANG Gang SONG Qi WANG Pengju WU Xuezhen ZHANG Yeqiang DUAN Rongmei Study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditions 矿业科学学报 rock joint cyclic shear shear characteristics cohesive element crack propagation |
| title | Study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditions |
| title_full | Study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditions |
| title_fullStr | Study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditions |
| title_full_unstemmed | Study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditions |
| title_short | Study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditions |
| title_sort | study on the shear characteristics and macro scopic mechanism of rock joints under cyclic loading conditions |
| topic | rock joint cyclic shear shear characteristics cohesive element crack propagation |
| url | http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2025007 |
| work_keys_str_mv | AT wanggang studyontheshearcharacteristicsandmacroscopicmechanismofrockjointsundercyclicloadingconditions AT songqi studyontheshearcharacteristicsandmacroscopicmechanismofrockjointsundercyclicloadingconditions AT wangpengju studyontheshearcharacteristicsandmacroscopicmechanismofrockjointsundercyclicloadingconditions AT wuxuezhen studyontheshearcharacteristicsandmacroscopicmechanismofrockjointsundercyclicloadingconditions AT zhangyeqiang studyontheshearcharacteristicsandmacroscopicmechanismofrockjointsundercyclicloadingconditions AT duanrongmei studyontheshearcharacteristicsandmacroscopicmechanismofrockjointsundercyclicloadingconditions |