Cyclic Response of Bolted and Hybrid Pultruded FRP Beam-Column Joints between I-Shaped Sections

This paper presents cyclic behaviour of bolted and hybrid–combined bonded fibre reinforced polymer (FRP) beam-to-column joints between I-shaped members using steel FRP cleats. Five full-scale tests are carried out to study moment-rotation behaviour, response, failure patterns. The test parameters include position cleat (flange or combined web flange), fastening method (bolting hybrid–combining bolting bonding) material (steel FRP). First two had hybrid with flange double angles. Next the same joint detailing but no Last used only Three modes were observed: shear-out beam’s zone, adhesive debonding delamination cracking. Cyclic performance was assessed by hysteresis curves accumulated dissipated energy. Hybrid showed best overall energy about 75% higher than joints. Bolted cleats exhibited worst performance. Flange cleated similar