Shear Strengthening of Beams With Large Opening in Critical Shear Zone(Static Conditions)

This research study was conducted to investigate the shear strengthening of beams
with large opening using CFRP strips. The principle focus was to determine the
effects of the circular and square shape openings. The amount and configuration
of CFRP strips was determined based on the failure behavior of the corresponding
beam without strengthening. The amount of opening (circular and square) was
kept as 8% of the beam elevation. The circular opening caused about 76 % loss of
capacity compared to the solid beam and the square opening resulted in about
74 %. After applying CFRP; 46.22% capacity was regained for beam with square
opening compared to solid beam. Similarly, for the beam with the circular
opening regained 45.35% of capacity compared to solid beam.