Numerical Analysis of Self-Compacting Concrete Deep Beams Performance with Various Spaces of Transverse Reinforcement

The use of deep beams as structural members is common in building structures such as pile foundations, transfer girders, bridge girder beams, short span beams, parts of vertical walls resisting gravity loads, shear walls, and floor plates. The deep beam must be filled with cast concrete in casting work to create a solid structure without segregation and honeycomb. Self-Compacting Concrete (SCC) material can fill gaps between reinforcing steel and produce dense structural members. This research aimed to determine the performance of deep beam SCC with variations in transverse reinforcement space under two monotonic load points. The research results revealed that the performance of SCC deep beams was better than normal concrete (NC) deep beams in terms of capacity to resist shear, stiffness, ductility, energy dissipation, and maximum deflection achieved at failure. All SCC deep beam models were moderately ductile, while the NC deep beams were low ductile. The SCC deep beam BS-1 model achieved the best shear capacity, followed by BS-2 and BS-3 models with increasingly sparse transverse reinforcement spacing. All deep beam NC models achieved 0.858 to 0.911 times the ultimate shear capacity of BS-1. This shows the potential of SCC as a better material than NC for manufacturing deep beam structures.