Abstract
Concrete shear wall systems and flat plate slabs have been increasingly used in mid- and high-rise buildings in order to to resist lateral loading and, thus, permit a reduction in storey height. The resulting requirement for long-span flooring results in increased slab thickness of flat plates, with this increased slab stiffness having a significant effect on coupling beam behaviour. In the current study, slab effectiveness was investigated by subjecting large-scale, reinforced concrete coupling beams to cyclic loading and effects of slab stiffness on reinforced concrete coupling beams in flat plate systems, including failure mode, load–displacement, strength, stiffness, energy dissipation and effective slab width, were analysed.
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