Fracture evolution in steel fiber reinforced concrete (SFRC) of tunnel under static and dynamic loading based on DEM-FDM coupling model
Abstract The frequent or occasional impact loads pose serious threats to the service safety of conventional concrete structures in tunnel. In this paper, a novel three-dimensional mesoscopic model of steel fiber reinforced concrete (SFRC) is constructed by discrete element method. The model encompas...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-02-01
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| Series: | International Journal of Coal Science & Technology |
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| Online Access: | https://doi.org/10.1007/s40789-024-00744-3 |
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| _version_ | 1823863652237705216 |
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| author | Yu Chen Dongfeng Yu Yixian Wang Yanlin Zhao Hang Lin Jingjing Meng Haoliang Wu |
| author_facet | Yu Chen Dongfeng Yu Yixian Wang Yanlin Zhao Hang Lin Jingjing Meng Haoliang Wu |
| author_sort | Yu Chen |
| collection | DOAJ |
| description | Abstract The frequent or occasional impact loads pose serious threats to the service safety of conventional concrete structures in tunnel. In this paper, a novel three-dimensional mesoscopic model of steel fiber reinforced concrete (SFRC) is constructed by discrete element method. The model encompasses the concrete matrix, aggregate, interfacial transition zone and steel fibers, taking into account the random shape of the coarse aggregate and the stochastic distribution of steel fibers. It captures microscopic-level interactions among the coarse aggregate, steel fibers, and matrix. Subsequently, a comprehensive procedure is formulated to calibrate the microscopic parameters required by the model, and the reliability of the model is verified by comparing with the experimental results. Furthermore, a coupled finite difference method-discrete element method approach is used to construct the model of the split Hopkinson pressure bar. Compression tests are simulated on SFRC specimens with varying steel fiber contents under static and dynamic loading conditions. Finally, based on the advantages of DEM analysis at the mesoscopic level, this study analyzed mechanisms of enhancement and crack arrest in SFRC. It shed a light on the perspectives of interface failure process, microcrack propagation, contact force field evolution and energy analysis, offering valuable insights for related mining engineering applications. |
| format | Article |
| id | doaj-art-ff6b30fe826841cf981bb06f21737c02 |
| institution | Kabale University |
| issn | 2095-8293 2198-7823 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Coal Science & Technology |
| spelling | doaj-art-ff6b30fe826841cf981bb06f21737c022025-02-09T12:04:41ZengSpringerOpenInternational Journal of Coal Science & Technology2095-82932198-78232025-02-0112112810.1007/s40789-024-00744-3Fracture evolution in steel fiber reinforced concrete (SFRC) of tunnel under static and dynamic loading based on DEM-FDM coupling modelYu Chen0Dongfeng Yu1Yixian Wang2Yanlin Zhao3Hang Lin4Jingjing Meng5Haoliang Wu6School of Civil Engineering, Sun Yat-Sen University & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)School of Civil Engineering, Sun Yat-Sen University & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)School of Civil Engineering, Hefei University of TechnologySchool of Energy and Safety Engineering, Hunan University of Science and TechnologySchool of Resources and Safety Engineering, Central South UniversityDepartment of Civil, Environmental and Natural Resources Engineering, Luleå University of TechnologySchool of Civil Engineering, Sun Yat-Sen University & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)Abstract The frequent or occasional impact loads pose serious threats to the service safety of conventional concrete structures in tunnel. In this paper, a novel three-dimensional mesoscopic model of steel fiber reinforced concrete (SFRC) is constructed by discrete element method. The model encompasses the concrete matrix, aggregate, interfacial transition zone and steel fibers, taking into account the random shape of the coarse aggregate and the stochastic distribution of steel fibers. It captures microscopic-level interactions among the coarse aggregate, steel fibers, and matrix. Subsequently, a comprehensive procedure is formulated to calibrate the microscopic parameters required by the model, and the reliability of the model is verified by comparing with the experimental results. Furthermore, a coupled finite difference method-discrete element method approach is used to construct the model of the split Hopkinson pressure bar. Compression tests are simulated on SFRC specimens with varying steel fiber contents under static and dynamic loading conditions. Finally, based on the advantages of DEM analysis at the mesoscopic level, this study analyzed mechanisms of enhancement and crack arrest in SFRC. It shed a light on the perspectives of interface failure process, microcrack propagation, contact force field evolution and energy analysis, offering valuable insights for related mining engineering applications.https://doi.org/10.1007/s40789-024-00744-3Steel fiber reinforced concreteDynamic loadingContact force fieldEnergy |
| spellingShingle | Yu Chen Dongfeng Yu Yixian Wang Yanlin Zhao Hang Lin Jingjing Meng Haoliang Wu Fracture evolution in steel fiber reinforced concrete (SFRC) of tunnel under static and dynamic loading based on DEM-FDM coupling model International Journal of Coal Science & Technology Steel fiber reinforced concrete Dynamic loading Contact force field Energy |
| title | Fracture evolution in steel fiber reinforced concrete (SFRC) of tunnel under static and dynamic loading based on DEM-FDM coupling model |
| title_full | Fracture evolution in steel fiber reinforced concrete (SFRC) of tunnel under static and dynamic loading based on DEM-FDM coupling model |
| title_fullStr | Fracture evolution in steel fiber reinforced concrete (SFRC) of tunnel under static and dynamic loading based on DEM-FDM coupling model |
| title_full_unstemmed | Fracture evolution in steel fiber reinforced concrete (SFRC) of tunnel under static and dynamic loading based on DEM-FDM coupling model |
| title_short | Fracture evolution in steel fiber reinforced concrete (SFRC) of tunnel under static and dynamic loading based on DEM-FDM coupling model |
| title_sort | fracture evolution in steel fiber reinforced concrete sfrc of tunnel under static and dynamic loading based on dem fdm coupling model |
| topic | Steel fiber reinforced concrete Dynamic loading Contact force field Energy |
| url | https://doi.org/10.1007/s40789-024-00744-3 |
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