Behaviour and detailing of coupling beams with high-strength materials

High-strength steel (HSS) has the potential to reduce reinforcement congestion and construction difficulties for coupling beams. This paper aims to investigate coupling beams using HSS diagonal bars and HSS transverse reinforcement. Four coupling beam specimens with a clear span-to-depth ratio of 2.0 were built with varying concrete materials and confinement details and tested under quasi-static reversed-cyclic shear loading. Despite using the …