FRP strengthened SHS beam-column connection under monotonic and large-deformation cyclic loading

Many civil applications use square hollow sections (SHSs) as members in beam-column connections which can be vulnerable under cyclic loading. Cyclic loadings from earthquakes, wind, waves and currents affect onshore offshore infrastructure. In addition, these become structurally inadequate through incremental service loads, design/fabrication errors material property degradation over time. Due to this, it will necessary strengthen SHS improve their performance sustained monotonic loadings. This paper treats the of strengthened with externally bonded carbon fibre reinforced polymer (CFRP) glass (GFRP). Experimental investigations have been conducted on bare, CFRP GFRP Results show that loading, both exhibit improved ultimate moment capacity, behaviour, secant stiffness, energy dissipation capacity plastic hinge behaviour compared bare counterparts. Under types higher stiffness ductility. strengthening enhances strength, while • are GFRP. tests FRP conducted. The responses also investigated experimentally. enhanced structural performances connection results reasonably theoretically predicted results.