Numerical Analysis of Shear Contribution of CFRP-Strengthened RC Beams by Different Bond-Slip Models
Abstract During a numerical investigation conducted using ABAQUS software, various bond-slip models for the FRP–concrete interface were evaluated to accurately predict the shear contribution of FRP in strengthening reinforced concrete (RC) beams. Three established bond-slip models were chosen to dev...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | International Journal of Concrete Structures and Materials |
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| Online Access: | https://doi.org/10.1186/s40069-024-00728-2 |
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| _version_ | 1841544880346628096 |
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| author | Shengqiang Ma Jianfeng Sun Tiancai Xu |
| author_facet | Shengqiang Ma Jianfeng Sun Tiancai Xu |
| author_sort | Shengqiang Ma |
| collection | DOAJ |
| description | Abstract During a numerical investigation conducted using ABAQUS software, various bond-slip models for the FRP–concrete interface were evaluated to accurately predict the shear contribution of FRP in strengthening reinforced concrete (RC) beams. Three established bond-slip models were chosen to develop finite element analysis models for the four FRP-strengthened beams. The outcomes of these numerical simulations were subsequently compared with experimental data. The results demonstrated a strong correlation between the finite element simulations and the experimental tests, particularly regarding the failure process and shear capacity of the reinforced beams. The increase in shear capacity observed during testing varied from 13.5% to 42.9%. In contrast, the corresponding increase in shear capacity predicted by the finite element simulations ranged from 5.5% to 47.7%. The discrepancy in CFRP shear contribution among beams with different bond-slip relationships, under identical reinforcement configurations, was observed to be within the range of 0.1% to 15.9%. The numerical results of the Nakaba model showed a higher level of safety; however, the simulation performance of the Lu model was regarded as more effective and better suited for numerical analysis in predicting the shear contribution of FRP in strengthened RC beams. |
| format | Article |
| id | doaj-art-3672a02b620a4486bf2a4197af113bd1 |
| institution | Kabale University |
| issn | 2234-1315 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Concrete Structures and Materials |
| spelling | doaj-art-3672a02b620a4486bf2a4197af113bd12025-01-12T12:12:32ZengSpringerOpenInternational Journal of Concrete Structures and Materials2234-13152025-01-0119111510.1186/s40069-024-00728-2Numerical Analysis of Shear Contribution of CFRP-Strengthened RC Beams by Different Bond-Slip ModelsShengqiang Ma0Jianfeng Sun1Tiancai Xu2Key Laboratory of Transport Industry of Bridge Detection Reinforcement Technology, Chang’an UniversitySchool of Architecture and Engineering, Xinjiang UniversitySchool of Architecture and Engineering, Xinjiang UniversityAbstract During a numerical investigation conducted using ABAQUS software, various bond-slip models for the FRP–concrete interface were evaluated to accurately predict the shear contribution of FRP in strengthening reinforced concrete (RC) beams. Three established bond-slip models were chosen to develop finite element analysis models for the four FRP-strengthened beams. The outcomes of these numerical simulations were subsequently compared with experimental data. The results demonstrated a strong correlation between the finite element simulations and the experimental tests, particularly regarding the failure process and shear capacity of the reinforced beams. The increase in shear capacity observed during testing varied from 13.5% to 42.9%. In contrast, the corresponding increase in shear capacity predicted by the finite element simulations ranged from 5.5% to 47.7%. The discrepancy in CFRP shear contribution among beams with different bond-slip relationships, under identical reinforcement configurations, was observed to be within the range of 0.1% to 15.9%. The numerical results of the Nakaba model showed a higher level of safety; however, the simulation performance of the Lu model was regarded as more effective and better suited for numerical analysis in predicting the shear contribution of FRP in strengthened RC beams.https://doi.org/10.1186/s40069-024-00728-2Reinforced concrete beamCFRP shear reinforcementNumerical analysisFRP–concrete interfaceBond-slip model |
| spellingShingle | Shengqiang Ma Jianfeng Sun Tiancai Xu Numerical Analysis of Shear Contribution of CFRP-Strengthened RC Beams by Different Bond-Slip Models International Journal of Concrete Structures and Materials Reinforced concrete beam CFRP shear reinforcement Numerical analysis FRP–concrete interface Bond-slip model |
| title | Numerical Analysis of Shear Contribution of CFRP-Strengthened RC Beams by Different Bond-Slip Models |
| title_full | Numerical Analysis of Shear Contribution of CFRP-Strengthened RC Beams by Different Bond-Slip Models |
| title_fullStr | Numerical Analysis of Shear Contribution of CFRP-Strengthened RC Beams by Different Bond-Slip Models |
| title_full_unstemmed | Numerical Analysis of Shear Contribution of CFRP-Strengthened RC Beams by Different Bond-Slip Models |
| title_short | Numerical Analysis of Shear Contribution of CFRP-Strengthened RC Beams by Different Bond-Slip Models |
| title_sort | numerical analysis of shear contribution of cfrp strengthened rc beams by different bond slip models |
| topic | Reinforced concrete beam CFRP shear reinforcement Numerical analysis FRP–concrete interface Bond-slip model |
| url | https://doi.org/10.1186/s40069-024-00728-2 |
| work_keys_str_mv | AT shengqiangma numericalanalysisofshearcontributionofcfrpstrengthenedrcbeamsbydifferentbondslipmodels AT jianfengsun numericalanalysisofshearcontributionofcfrpstrengthenedrcbeamsbydifferentbondslipmodels AT tiancaixu numericalanalysisofshearcontributionofcfrpstrengthenedrcbeamsbydifferentbondslipmodels |