Rational use of HPFRC in slab – column connections under reversed horizontal cyclic loading

Slab – column connections that are subjected to combined gravity and horizontal loading during an earthquake prone premature failure due punching shear. Traditional solutions avoid increase the displacement capacity of this type connection include using stirrups double-headed studs as shear reinforcement. The use High-Performance Fiber Reinforced Concrete (HPFRC) in a small region slab around substitute for traditional is investigated paper, because material has potential reduce labor costs. To fulfill objective, four specimens with thickness 150 mm were tested under reversed drifts. results discussed detail. experimental variables considered top flexural reinforcement ratio, size HPFRC zone intensity load. Previously published tests serve reference used compare results. behavior was substantially improved compared terms drift capacity: from only 1.0% above 5.5%, even though very quantity used, extended up 1.5 times effective depth face column. Specimens also behaved better when High-Strength (HSC). Side effects vicinity unbalanced moment transfer lateral stiffness, well reduction deflections slab.