Title:
Seismic Performance of Interior GFRP-RC Beam-Column Joints
Author(s):
Shervin Khalili Ghomi and Ehab F. El-Salakawy
Publication:
Symposium Paper
Volume:
327
Issue:
Appears on pages(s):
10.1-10.18
Keywords:
Beam-column joints; Glass fiber reinforced polymer (GFRP); Joint shear ratio; Reinforced concrete; Seismic effect.
DOI:
10.14359/51713330
Date:
11/1/2018
Abstract:
Two full-scale interior beam-column joints reinforced with Glass Fibre Reinforced Polymers (GFRP) were
constructed and tested under reversal cyclic loading. Two levels of joint shear ratios were investigated; 1.3 and 1.5
times the square root of the concrete compressive strength (√f’c.). The specimens were isolated from assumed points
of contra-flexure at mid-height of the columns and mid-span of the beams. Based on the obtained results, it was
concluded that interior beam-column joints reinforced with GFRP bars and stirrups can withstand joint shear stress
ratio of 1.5√f’c when the column is reinforced according to the confinement requirements of the Canadian standards
for FRP-reinforced concrete (RC) building structures. Due to high tensile strength and low modulus of elasticity of
GFRP, GFRP-RC beam-column joints can withstand large lateral deformations without exhibiting sudden failure due
to bar rupture. This deformable behaviour indicates that GFRP-RC frames can be used in seismically active regions.