Nonlinear Finite Element Analysis of Reinforced Concrete Beams with a Small Amount of Web Reinforcement under Shear

Abstract

This research work presents a nonlinear finite element investigation on thebehavior of reinforced concrete beams with a small amount of web reinforcement undershear. This investigation is carried out in order to get a better understanding of theirbehavior throughout the entire loading history.The three- dimensional 20-node brick elements are used to model the concrete, whilethe reinforcing bars are modeled as axial members embedded within the concrete brickelements. The compressive behavior of concrete is simulated by an elastic-plasticwork-hardening model followed by a perfectly plastic response, which terminated atthe onset of crushing. In tension, a fixed smeared crack model has been used.

Keywords

• finite element method
• small amount web reinforcement
• shear