Flexural behaviour of notched steel beams repaired with FRP plates: Parametric studies

The load carrying capacity in a damaged steel beam can be substantiallyincreased through repairing by attaching fiber-reinforced-polymer (frp) plates to tensionange. such a repaired beam is generally failed by either debonding of the frp plates fromthe steel ange or frp rupture at the damage location due to the stress concentration.in this case, the eectiveness of repair signicantly depends on the repairing materialproperties, i.e. frp and adhesive. this paper developed a finite element (fe) modeling ofdamaged steel beams repaired with frp plates, and aimed to clarify the frp and adhesiveproperties eects on beam recovery. the primary defect was simulated by inserting a notchthrough the tension ange at mid-span. to ensure the validity of the proposed numericalmodel, the results of numerical models were compared with those existing experimentalworks. a parametric study was performed to achieve a better understanding on thesensitivity of parameters which are responsible for exural behavior of the repaired beams.studies showed that the inuence of the most investigated parameters on the response ofthe repaired beam is very notable, and considering inuential parameters in choosing thematerial for a frp-repair leads to promising results in design consideration.