Modeling of Shear Behavior in Reinforced Concrete Beams

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Title: Modeling of Shear Behavior in Reinforced Concrete Beams

Author(s): Dario Coronelli and Maria Gabriella Mulas

Publication: Structural Journal

Volume: 103

Issue: 3

Appears on pages(s): 372-382

Keywords: beam; cracking; reinforced concrete; shear

Date: 5/1/2006

Abstract:
The purpose of this paper is to develop a reliable two-dimensional (2D) finite element (FE) modeling approach for the nonlinear behavior of reinforced concrete (RC) shear-critical elements. The proper kinematic field is achieved by using different finite elements for the concrete, steel, and the steel-concrete interface; separate constitutive models are formulated for each type of material. A modification of the 2D strength envelope of concrete in plane stress is proposed to consider the effects of triaxial-axial stress conditions in beams with small shear span-to-depth ratio. This approach allows successful comparison with experimental results on RC beams for a significant range of design parameters, load conditions, and reinforcement arrangements. Finally, a critical review of several modeling approaches in the literature is carried out.