Evaluation of the Behavior of a Damaged Prestressed Concrete Bridge Girder with CFRP by Finite Element Analysis

This paper presented finite element analysis of three full-scale pre stressed concrete girders, one undamaged, one intentionally damaged and one damaged and strengthened with externally bonded CFRP laminates. The finite element model of undamaged not retrofited (UDNR) , the model based on Di Ludovico et al. 2010, was validated based on comparison to girder S1. The model was intentionally damaged to simulate impact damage and then was retrofitted with CFRP. The finite element model of DNR, the model that was damaged not retrofited, showed behaviour that is typical for a damaged girder. The FRP retrofit improved the damage prestressed concrete (PC) girder’s design strength back to its original design strength. The finite element analysis proved that a damaged PC girder can be affectively retrofitted to its original design strength or more, as shown in the finite element model of DR.

Keywords:

RC Bridge Girders , cfrp , pc girders , finite element analysis