A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Interfaces Between Reinforced Concrete Jackets and Columns
https://orcid.org/http://orcid.org/0000-0002-9308-0542
https://orcid.org/http://orcid.org/0000-0002-0354-2038
https://orcid.org/http://orcid.org/0000-0002-4891-7091
https://orcid.org/http://orcid.org/0000-0003-3926-2430
Reinforced concrete jacketing in existing columns is among the most common techniques for strengthening substandard buildings. Current codes recognize the significance of the interfaces between the original column and its jacket without providing explicit guidance on their design. On the other hand, published results from cyclic tests on jacketed columns show that their maximum lateral resistance is practically independent of key interface parameters as roughness and reinforcement ratio. Furthermore, the study of those results reveals that relevant quantitative measurements on the interface behavior are scarce. To interpret the experimental results, available data were compiled in a database and were evaluated with a focus on the behavior of interfaces. To this purpose, plausible assumptions were made related to the shear force that the interfaces must transfer along their height, as well as for the confinement offered by the jacket to the original column, due to the axial load applied to the latter. In parallel, the resistance of interfaces was calculated, using the equation developed by the authors. The calculated actions and resistances of interfaces were compared against the experimental observations. Although this comparison was possible only for a portion of the available results, the applied equation and the assumptions made yielded results close to the experimental evidence. The experimental observation of rather slight effect of interface characteristics on the behavior of jacketed columns may be attributed to the fact that, in most cases, the original column is subjected to an axial load after the construction of the jacket.
Interfaces Between Reinforced Concrete Jackets and Columns
https://orcid.org/http://orcid.org/0000-0002-9308-0542
https://orcid.org/http://orcid.org/0000-0002-0354-2038
https://orcid.org/http://orcid.org/0000-0002-4891-7091
https://orcid.org/http://orcid.org/0000-0003-3926-2430
Reinforced concrete jacketing in existing columns is among the most common techniques for strengthening substandard buildings. Current codes recognize the significance of the interfaces between the original column and its jacket without providing explicit guidance on their design. On the other hand, published results from cyclic tests on jacketed columns show that their maximum lateral resistance is practically independent of key interface parameters as roughness and reinforcement ratio. Furthermore, the study of those results reveals that relevant quantitative measurements on the interface behavior are scarce. To interpret the experimental results, available data were compiled in a database and were evaluated with a focus on the behavior of interfaces. To this purpose, plausible assumptions were made related to the shear force that the interfaces must transfer along their height, as well as for the confinement offered by the jacket to the original column, due to the axial load applied to the latter. In parallel, the resistance of interfaces was calculated, using the equation developed by the authors. The calculated actions and resistances of interfaces were compared against the experimental observations. Although this comparison was possible only for a portion of the available results, the applied equation and the assumptions made yielded results close to the experimental evidence. The experimental observation of rather slight effect of interface characteristics on the behavior of jacketed columns may be attributed to the fact that, in most cases, the original column is subjected to an axial load after the construction of the jacket.
Interfaces Between Reinforced Concrete Jackets and Columns
https://orcid.org/http://orcid.org/0000-0002-9308-0542
https://orcid.org/http://orcid.org/0000-0002-0354-2038
https://orcid.org/http://orcid.org/0000-0002-4891-7091
https://orcid.org/http://orcid.org/0000-0003-3926-2430
Reinforced concrete jacketing in existing columns is among the most common techniques for strengthening substandard buildings. Current codes recognize the significance of the interfaces between the original column and its jacket without providing explicit guidance on their design. On the other hand, published results from cyclic tests on jacketed columns show that their maximum lateral resistance is practically independent of key interface parameters as roughness and reinforcement ratio. Furthermore, the study of those results reveals that relevant quantitative measurements on the interface behavior are scarce. To interpret the experimental results, available data were compiled in a database and were evaluated with a focus on the behavior of interfaces. To this purpose, plausible assumptions were made related to the shear force that the interfaces must transfer along their height, as well as for the confinement offered by the jacket to the original column, due to the axial load applied to the latter. In parallel, the resistance of interfaces was calculated, using the equation developed by the authors. The calculated actions and resistances of interfaces were compared against the experimental observations. Although this comparison was possible only for a portion of the available results, the applied equation and the assumptions made yielded results close to the experimental evidence. The experimental observation of rather slight effect of interface characteristics on the behavior of jacketed columns may be attributed to the fact that, in most cases, the original column is subjected to an axial load after the construction of the jacket.
Interfaces Between Reinforced Concrete Jackets and Columns
Lecture Notes in Civil Engineering
Ilki, Alper (editor) / Çavunt, Derya (editor) / Çavunt, Yavuz Selim (editor) / Oikonomopoulou, Erato (author) / Palieraki, Vasiliki (author) / Vintzileou, Elizabeth (author) / Genesio, Giovacchino (author)
International Symposium of the International Federation for Structural Concrete ; 2023 ; Istanbul, Türkiye
2023-06-01
10 pages
Article/Chapter (Book)
Electronic Resource
English
Reinforced Concrete Columns Strengthened with High Performance Concrete Jackets
| British Library Conference Proceedings | 2000
Reinforced Concrete Bridge Columns Repaired with Fiber Reinforced Polymer Jackets
| British Library Conference Proceedings | 2014
Reliability of Reinforced Concrete Columns Confined with FRP Jackets
| British Library Conference Proceedings | 2002