CONFERENCE / REACT-2025

A coupling beam is a structural component used to connect two adjacent shear walls or structural cores. Commonly implemented in high-rise buildings subjected to significant lateral forces like wind and earthquakes. Coupling beams improve the overall stiffness and strength of the structure. By linking shear walls, they enable coordinated resistance to lateral loads, reducing shear deformation between the walls and enhancing seismic performance. This paper investigates the behavior of various replaceable steel coupling beams under cyclic loading. Five different models were analyzed, in which various types of beam-to- link connections were adopted, including Stiffeners in Coupling beam, End plate Connection, Splice plate Connection, Bolted web connection and thin plate on web. The findings indicate that, damage in these beams is primarily concentrated on the center of the shear link, leaving the integrity of the shear wall structure largely unaffected. An analytical investigation was conducted to investigate the Load carrying capacity, Load- displacement curve, and Energy dissipation of Steel Coupling Beams