Behavioral analysis of Corbel using Nonlinear Finite Element Analysis

Abstract

The corbel is a cantilevered structural element projecting from a reinforced concrete column or wall, primarily responsible for supporting and transferring loads from the superstructure, such as bridges, reinforced concrete buildings, and precast floor systems. However, studies have revealed that corbels in long-service bridges often exhibit damage, characterized by concrete deterioration and exposure of reinforcement, which may compromise the load-carrying capacity and overall safety of the structure.

This research focuses on investigating the behavior of corbels under applied loads using ATENA software, a nonlinear finite element analysis (NLFEA) program capable of accurately simulating the behavior of reinforced concrete structures. The study compares the behavior of corbels under varying shear span-to-effective depth ratios (a/d) of 0.10, 0.15, 0.20, and 0.25, respectively. The results indicate that the shear span-to-effective depth ratio significantly influences the ultimate shear capacity of corbels.