A Review of Previous Studies on the Reinforced Concrete Corbels

Abstract

Abstract Corbels are short-hunched cantilevers that project from inner face of columns to support heavy concentrated loads or beam reactions. They are very important structural elements for supporting precast beams, girders and any other form of precast structure systems. ACI 318-14 provisions allow the structural design of shear-controlled corbels through either an empirical design method such as the shear-friction method or the strut-and-tie modeling (STM). This paper reviews some previous research studies on reinforced concrete corbels. From this literature; it was concluded that the STM method provides a more accurate estimation of ultimate load capacity and behavior than the shear-friction method. The ultimate shear strength increases with increasing main reinforcement, compressive strength (f’c), the presence of fibers, while it decreases with the increase of shear span-to-effective depth ratio (a/d) and horizontal to vertical load ratio (Nu/Vu).