A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FRP Seismic Strengthening of Infilled RC Frames
https://orcid.org/http://orcid.org/0000-0002-4912-2944
https://orcid.org/http://orcid.org/0000-0003-3697-3923
https://orcid.org/http://orcid.org/0000-0001-5990-7457
https://orcid.org/http://orcid.org/0000-0003-3820-663X
Recent seismic events demonstrated the high vulnerability of existing reinforced concrete (RC) buildings in the Mediterranean area. This is related to the lack of proper seismic details and to the brittle response of hollow clay brick infills. The high stiffness of infills may significantly modify the structural response, reducing the period of vibration and attracting high seismic forces that are transmitted to the surrounding RC frames. Often this led to premature shear failure at the top of the column or within the joint panel. In this context composite materials such as fiber reinforced polymers (FRP) or fiber reinforced cementitious mortar (FRCM) were found to be very effective increasing the shear strength of column and beam-column joints and reducing the damage to infills. Those interventions can be easy and fast to apply and were largely applied in the recent post- earthquake reconstruction processes. However, most of the proposed strengthening layouts have a significant level of disruption leading to the interruption of the building functionality for several months. In turn, their use cannot be easily promoted in peacetime when preserving the usability of the building is a priority. Novel strengthening solutions and layouts were recently proposed to minimize the level of disruption. Although several experimental tests joint subassemblies can be found in literature a validation on full-scale multi-storey infilled RC frames is still lacking. This paper reports the preliminary results of an experimental programme on two-storeys infilled RC frames tested under pseudodynamic earthquake loads. The prototype was first damaged and then repaired and strengthened by using a combination of FRP and FRCM solution properly designed to minimize the level of disruption during the installation. The main experimental outcomes and a comparison in terms of global and local response are reported and discussed.
FRP Seismic Strengthening of Infilled RC Frames
https://orcid.org/http://orcid.org/0000-0002-4912-2944
https://orcid.org/http://orcid.org/0000-0003-3697-3923
https://orcid.org/http://orcid.org/0000-0001-5990-7457
https://orcid.org/http://orcid.org/0000-0003-3820-663X
Recent seismic events demonstrated the high vulnerability of existing reinforced concrete (RC) buildings in the Mediterranean area. This is related to the lack of proper seismic details and to the brittle response of hollow clay brick infills. The high stiffness of infills may significantly modify the structural response, reducing the period of vibration and attracting high seismic forces that are transmitted to the surrounding RC frames. Often this led to premature shear failure at the top of the column or within the joint panel. In this context composite materials such as fiber reinforced polymers (FRP) or fiber reinforced cementitious mortar (FRCM) were found to be very effective increasing the shear strength of column and beam-column joints and reducing the damage to infills. Those interventions can be easy and fast to apply and were largely applied in the recent post- earthquake reconstruction processes. However, most of the proposed strengthening layouts have a significant level of disruption leading to the interruption of the building functionality for several months. In turn, their use cannot be easily promoted in peacetime when preserving the usability of the building is a priority. Novel strengthening solutions and layouts were recently proposed to minimize the level of disruption. Although several experimental tests joint subassemblies can be found in literature a validation on full-scale multi-storey infilled RC frames is still lacking. This paper reports the preliminary results of an experimental programme on two-storeys infilled RC frames tested under pseudodynamic earthquake loads. The prototype was first damaged and then repaired and strengthened by using a combination of FRP and FRCM solution properly designed to minimize the level of disruption during the installation. The main experimental outcomes and a comparison in terms of global and local response are reported and discussed.
FRP Seismic Strengthening of Infilled RC Frames
https://orcid.org/http://orcid.org/0000-0002-4912-2944
https://orcid.org/http://orcid.org/0000-0003-3697-3923
https://orcid.org/http://orcid.org/0000-0001-5990-7457
https://orcid.org/http://orcid.org/0000-0003-3820-663X
Recent seismic events demonstrated the high vulnerability of existing reinforced concrete (RC) buildings in the Mediterranean area. This is related to the lack of proper seismic details and to the brittle response of hollow clay brick infills. The high stiffness of infills may significantly modify the structural response, reducing the period of vibration and attracting high seismic forces that are transmitted to the surrounding RC frames. Often this led to premature shear failure at the top of the column or within the joint panel. In this context composite materials such as fiber reinforced polymers (FRP) or fiber reinforced cementitious mortar (FRCM) were found to be very effective increasing the shear strength of column and beam-column joints and reducing the damage to infills. Those interventions can be easy and fast to apply and were largely applied in the recent post- earthquake reconstruction processes. However, most of the proposed strengthening layouts have a significant level of disruption leading to the interruption of the building functionality for several months. In turn, their use cannot be easily promoted in peacetime when preserving the usability of the building is a priority. Novel strengthening solutions and layouts were recently proposed to minimize the level of disruption. Although several experimental tests joint subassemblies can be found in literature a validation on full-scale multi-storey infilled RC frames is still lacking. This paper reports the preliminary results of an experimental programme on two-storeys infilled RC frames tested under pseudodynamic earthquake loads. The prototype was first damaged and then repaired and strengthened by using a combination of FRP and FRCM solution properly designed to minimize the level of disruption during the installation. The main experimental outcomes and a comparison in terms of global and local response are reported and discussed.
FRP Seismic Strengthening of Infilled RC Frames
Lecture Notes in Civil Engineering
Ilki, Alper (editor) / Çavunt, Derya (editor) / Çavunt, Yavuz Selim (editor) / Del Vecchio, Ciro (author) / Di Ludovico, Marco (author) / Balsamo, Alberto (author) / Prota, Andrea (author)
International Symposium of the International Federation for Structural Concrete ; 2023 ; Istanbul, Türkiye
2023-06-03
8 pages
Article/Chapter (Book)
Electronic Resource
English
Seismic strengthening of infilled reinforced concrete frames by CFRP
| British Library Online Contents | 2016
Seismic strengthening of infilled reinforced concrete frames by CFRP
| British Library Online Contents | 2016
Seismic strengthening of infilled reinforced concrete frames by CFRP
| British Library Online Contents | 2016
Seismic strengthening of infilled reinforced concrete frames by CFRP
| British Library Online Contents | 2016
Seismic strengthening of infilled reinforced concrete frames by CFRP
| British Library Online Contents | 2016