Structural Behavior of Arch Models Strengthened Using Fiber-Reinforced Polymer Strips of Different Lengths

Experimental investigation on cyclic response of RC elements repaired by CFRP external reinforcing systems

“…The issues of upgrading buildings with structural deficiencies and repairing structures damaged by seismic events determined in recent years a growing interest among scientific community and structural engineers towards fiber reinforced polymer (FRP) composites. This is confirmed by the several practical applications on RC [7], masonry [8][9][10][11], and timber [12] structures and by issuing of specific technical guidelines in many countries [13][14][15][16]. Several researches have shown the effectiveness of FRP composites for strengthening of beam-column joints in terms of shear strength and energy dissipation capacity [17][18][19][20].…”

Carbon-FRCM materials for structural upgrade of masonry arch road bridges

“…The structure has been analyzed following the approach of the limit analysis of the collapse mechanisms [9,11,14,15,46e51] briefly summarized in this section. The analysis consists in considering a system representing the entire structure (global mechanisms) or a part of it (local mechanisms) subjected to permanent loads and to a live load system proportional to a load multiplier l. The considered system becomes a single degree of freedom mechanism introducing a number of hinges equal to n þ 1, where n is the degree of static indeterminacy of the system.…”

“…In this case the collapse mechanism is characterized by hinges placed on the cross sections edges [2,11,14,46e51] ( Fig. 7(b)).…”

FRP-masonry interfacial debonding: An energy balance approach to determine the influence of the mortar joints

“…In the last two decades externally bonded fiber-reinforced polymer (FRP) composites have been widely used to strengthen reinforced concrete (Teng et al, 2001), masonry (Prota et al, 2008;Willis et al, 2009;Xia and Oehlers, 2006;D'Ambrisi et al, 2013a;Rovero et al, 2013;Foraboschi, 2004Foraboschi, , 2013, and wood (D'Ambrisi et al, 2014) structures. When FRP reinforcement is applied on a brittle substrate such as a concrete or masonry substrate, the premature debonding of the FRP reinforcement from the substrate prior to reaching the tensile strength of the composite is the most common modality of failure.…”