Experimental Research and Numerical Simulation on the Hysteresis Performance of Strengthened Beam–Column Joints
Beam–column joints in reinforced concrete frames are subjected to complex forces and are prone to damage under seismic actions. This paper proposes a method to strengthen beam–column joints using angle steel and split bolts. The hysteretic performance of the strengthened components is investigated t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/9/1421 |
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| author | Xiuying Yang Yanling Li Shixin Duan Guodong Zhao Jie Song Denghu Jing |
| author_facet | Xiuying Yang Yanling Li Shixin Duan Guodong Zhao Jie Song Denghu Jing |
| author_sort | Xiuying Yang |
| collection | DOAJ |
| description | Beam–column joints in reinforced concrete frames are subjected to complex forces and are prone to damage under seismic actions. This paper proposes a method to strengthen beam–column joints using angle steel and split bolts. The hysteretic performance of the strengthened components is investigated through test and finite element numerical simulation. The influencing parameters, including concrete strength grade, axial compression ratio, stirrup characteristic value, angle steel leg length, and angle steel leg thickness, are analyzed. The results show that angle steel can simultaneously enhance the strength and stiffness of the strengthened joints. With an increase in concrete strength grade, the load-carrying capacity of the strengthened components continuously increases. However, when the axial compression ratio exceeds 0.6, the load-carrying capacity of the strengthened components significantly decreases. The size of the stirrup characteristic value has little influence on the shear resistance of the strengthened joints. The leg length and leg thickness of the angle steel have certain effects on the strengthening effectiveness. The method of outward movement of plastic hinges can effectively improve the seismic performance of bi-directionally loaded spatial joints. |
| format | Article |
| id | doaj-art-b9cdee472cd044e798d3e53ddf0a43d2 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-b9cdee472cd044e798d3e53ddf0a43d22025-08-20T03:52:56ZengMDPI AGBuildings2075-53092025-04-01159142110.3390/buildings15091421Experimental Research and Numerical Simulation on the Hysteresis Performance of Strengthened Beam–Column JointsXiuying Yang0Yanling Li1Shixin Duan2Guodong Zhao3Jie Song4Denghu Jing5School of Architecture and Engineering, Liaocheng University, Liaocheng 252000, ChinaDongying Hekou Construction Project Quality and Safety Evaluation Center, Dongying 257000, ChinaShandong Quality Inspection and Testing Center of Construction Engineering Co., Ltd., Jinan 250108, ChinaShandong Academy of Building Research Co., Ltd., Jinan 250108, ChinaShandong Academy of Building Research Co., Ltd., Jinan 250108, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaBeam–column joints in reinforced concrete frames are subjected to complex forces and are prone to damage under seismic actions. This paper proposes a method to strengthen beam–column joints using angle steel and split bolts. The hysteretic performance of the strengthened components is investigated through test and finite element numerical simulation. The influencing parameters, including concrete strength grade, axial compression ratio, stirrup characteristic value, angle steel leg length, and angle steel leg thickness, are analyzed. The results show that angle steel can simultaneously enhance the strength and stiffness of the strengthened joints. With an increase in concrete strength grade, the load-carrying capacity of the strengthened components continuously increases. However, when the axial compression ratio exceeds 0.6, the load-carrying capacity of the strengthened components significantly decreases. The size of the stirrup characteristic value has little influence on the shear resistance of the strengthened joints. The leg length and leg thickness of the angle steel have certain effects on the strengthening effectiveness. The method of outward movement of plastic hinges can effectively improve the seismic performance of bi-directionally loaded spatial joints.https://www.mdpi.com/2075-5309/15/9/1421strengthened beam–column jointsangle steelhysteretic performanceinfluencing parametersnumerical analysis |
| spellingShingle | Xiuying Yang Yanling Li Shixin Duan Guodong Zhao Jie Song Denghu Jing Experimental Research and Numerical Simulation on the Hysteresis Performance of Strengthened Beam–Column Joints Buildings strengthened beam–column joints angle steel hysteretic performance influencing parameters numerical analysis |
| title | Experimental Research and Numerical Simulation on the Hysteresis Performance of Strengthened Beam–Column Joints |
| title_full | Experimental Research and Numerical Simulation on the Hysteresis Performance of Strengthened Beam–Column Joints |
| title_fullStr | Experimental Research and Numerical Simulation on the Hysteresis Performance of Strengthened Beam–Column Joints |
| title_full_unstemmed | Experimental Research and Numerical Simulation on the Hysteresis Performance of Strengthened Beam–Column Joints |
| title_short | Experimental Research and Numerical Simulation on the Hysteresis Performance of Strengthened Beam–Column Joints |
| title_sort | experimental research and numerical simulation on the hysteresis performance of strengthened beam column joints |
| topic | strengthened beam–column joints angle steel hysteretic performance influencing parameters numerical analysis |
| url | https://www.mdpi.com/2075-5309/15/9/1421 |
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