Nonlinear Numerical Assessment of Exterior Beam-Column Connections with Low-Strength Concrete
The ductility and capacity of reinforced concrete beam-column connections depend mainly on the concrete’s strength and the provided reinforcements. This study investigates numerically the role of low-strength concrete in beam-column joints utilizing ABAQUS software. In this simulation, a newly devel...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/11/11/562 |
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| author | Basem S. Abdelwahed Mosbeh R. Kaloop Waleed E. El-Demerdash |
| author_facet | Basem S. Abdelwahed Mosbeh R. Kaloop Waleed E. El-Demerdash |
| author_sort | Basem S. Abdelwahed |
| collection | DOAJ |
| description | The ductility and capacity of reinforced concrete beam-column connections depend mainly on the concrete’s strength and the provided reinforcements. This study investigates numerically the role of low-strength concrete in beam-column joints utilizing ABAQUS software. In this simulation, a newly developed stress-inelastic strain relationship for both confined and unconfined low-strength concrete is used. This study recommended a specific value of the concrete dilation angle for both substandard and standard joints. Also, stirrups’ yield strength value was found to play an insignificant role in improving the shear resistance of such joints with low-strength. In addition, the joint shear strength prediction using empirical models that implicitly consider the stirrups contribution in improving joint resistance was found to be better than the prediction of other models that explicitly consider the stirrups’ presence. The numerical results also showed that the use of a diagonal steel haunch as a joint retrofitting technique significantly increases the joint shear capacity and changes its brittle shear failure into a ductile beam flexural failure. |
| first_indexed | 2024-03-10T05:39:10Z |
| format | Article |
| id | doaj.art-3630e3fc2f3a49ec9c70f437d8416632 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T05:39:10Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-3630e3fc2f3a49ec9c70f437d84166322023-11-22T22:40:20ZengMDPI AGBuildings2075-53092021-11-01111156210.3390/buildings11110562Nonlinear Numerical Assessment of Exterior Beam-Column Connections with Low-Strength ConcreteBasem S. Abdelwahed0Mosbeh R. Kaloop1Waleed E. El-Demerdash2Department of Structural Engineering, Mansoura University, Mansoura 35516, EgyptDepartment of Public Works Engineering, Mansoura University, Mansoura 35516, EgyptDepartment of Civil Engineering, Misr Higher Institute for Engineering and Technology, Mansoura 35516, EgyptThe ductility and capacity of reinforced concrete beam-column connections depend mainly on the concrete’s strength and the provided reinforcements. This study investigates numerically the role of low-strength concrete in beam-column joints utilizing ABAQUS software. In this simulation, a newly developed stress-inelastic strain relationship for both confined and unconfined low-strength concrete is used. This study recommended a specific value of the concrete dilation angle for both substandard and standard joints. Also, stirrups’ yield strength value was found to play an insignificant role in improving the shear resistance of such joints with low-strength. In addition, the joint shear strength prediction using empirical models that implicitly consider the stirrups contribution in improving joint resistance was found to be better than the prediction of other models that explicitly consider the stirrups’ presence. The numerical results also showed that the use of a diagonal steel haunch as a joint retrofitting technique significantly increases the joint shear capacity and changes its brittle shear failure into a ductile beam flexural failure.https://www.mdpi.com/2075-5309/11/11/562beam-column jointlow-strength concreteextreme loadingnumerical modelingstirrupsshear strength |
| spellingShingle | Basem S. Abdelwahed Mosbeh R. Kaloop Waleed E. El-Demerdash Nonlinear Numerical Assessment of Exterior Beam-Column Connections with Low-Strength Concrete Buildings beam-column joint low-strength concrete extreme loading numerical modeling stirrups shear strength |
| title | Nonlinear Numerical Assessment of Exterior Beam-Column Connections with Low-Strength Concrete |
| title_full | Nonlinear Numerical Assessment of Exterior Beam-Column Connections with Low-Strength Concrete |
| title_fullStr | Nonlinear Numerical Assessment of Exterior Beam-Column Connections with Low-Strength Concrete |
| title_full_unstemmed | Nonlinear Numerical Assessment of Exterior Beam-Column Connections with Low-Strength Concrete |
| title_short | Nonlinear Numerical Assessment of Exterior Beam-Column Connections with Low-Strength Concrete |
| title_sort | nonlinear numerical assessment of exterior beam column connections with low strength concrete |
| topic | beam-column joint low-strength concrete extreme loading numerical modeling stirrups shear strength |
| url | https://www.mdpi.com/2075-5309/11/11/562 |
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