2023 Volume 79 Issue 3 Article ID: 22-00258
Reinforced concrete structures are designed with ever increasing reinforcing steel owing to the complexities of structures and the strict design requirements. Congestion of reinforcement commonly occurs at connections between RC column footings and RC piles where the horizontal reinforcement arranged on a bottom surface of a footing crosses the vertical reinforcement of piles. Due to the complicated failure mechanisms, it is difficult to avoid reinforcing congestion by improving the arrangement based on the investigation of structural capacity of footings. This paper presents numerical analyses of RC footings supported piles to evaluate the load carrying capacity and the failure mechanisms. The effects of the shear span-to-effective depth ratio, the amount of shear reinforcement, and the reinforcing arrangement are investigated, then the suitable arrangement of horizontal reinforcement on a bottom surface of a footing is proposed to improve RC construction productivity.
