Compressive performance of circular hollow section brace with eccentrically installed rib-stiffened splice plates

Abstract Hollow section braces are often adopted in steel frame structures because of their superior performance. To connect tubular members with framing elements, field-bolted connections the slotted-in single splice plate and gusset majorly used ease construction. However, eccentricity between axes reduces compressive strength brace induces local connection failures under seismic excitations. improve strength, this paper proposes a new configuration for circular hollow which cruciform rib-stiffened plates eccentrically installed such that axis coincides axis. The concept proposed was first described theoretical considerations. demonstrate effectiveness connections, loading tests subsequent cyclic were conducted four test specimens. Furthermore, finite element analyses long-brace models performed to good performance wide range slenderness ratios.