This paper presents the results of an experimental campaign performed – at the Laboratory of Materials & Structures of the University of Salerno (Italy) – with the aim to investigate the seismic performance of RC beam columns joints strengthened with FRP systems. The test matrix includes eight specimens realized to be representative of existing exterior beam-column subassemblies with inadequate seismic details. Of these, six were strengthened by using different FRP systems while the remaining ones were used as benchmark; once damaged, some specimens were also re-tested after being retrofitted with FRP. Tests were performed in displacement control by subjecting the specimens to cyclic excitation, whereas the axial load on the column was kept constant and equal to about 300 kN. The obtained results have allowed to draw some criticisms related to the design of the FRP joint upgrading; the most suitable FRP configurations are also identified.
Comportamento ciclico di nodi trave–colonna in c.a. rinforzati con sistemi in CFRP
FAELLA, Ciro;LIMA, CARMINE;NAPOLI, ANNALISA;REALFONZO, ROBERTO
2012
Abstract
This paper presents the results of an experimental campaign performed – at the Laboratory of Materials & Structures of the University of Salerno (Italy) – with the aim to investigate the seismic performance of RC beam columns joints strengthened with FRP systems. The test matrix includes eight specimens realized to be representative of existing exterior beam-column subassemblies with inadequate seismic details. Of these, six were strengthened by using different FRP systems while the remaining ones were used as benchmark; once damaged, some specimens were also re-tested after being retrofitted with FRP. Tests were performed in displacement control by subjecting the specimens to cyclic excitation, whereas the axial load on the column was kept constant and equal to about 300 kN. The obtained results have allowed to draw some criticisms related to the design of the FRP joint upgrading; the most suitable FRP configurations are also identified.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
