Study on Seismic Behavior of Concrete-filled square steel tube column with core column-Steel Beam Joints

This paper has carried out the quasi-static tests of five specimens FRP-UHPC column-steel beam joints with core columns, and extensive parameter analysis by numerical simulation. The results show that Concrete-filled square steel tube column -Steel Beam Joints have strong bearing capacity. It excellent deformability, stiffness energy dissipation capacity, works well under condition high axial compression ratio. capacity replacement specimen does not deteriorate significantly, which indicates is replaceable.