Title:
A 3D finite element model for reinforced concrete structures analysis
Author(s):
Giuliana Furtado Franca Bono, Américo Campos Filho, Alexandre Rodrigues Pacheco
Publication:
IBRACON
Volume:
4
Issue:
4
Appears on pages(s):
548 560
Keywords:
concreto armado; método dos elementos finitos; modelos constitutivos; modelo ortotrópico.
DOI:
Date:
10/10/2011
Abstract:
This work presents a numerical model for 3D analyses through the finite element method of reinforced concrete structures subjected to monotonic loads. The proposed model for concrete is orthotropic and uses the equivalent uniaxial strain concept. The equivalent uniaxial stress-strain relation is generalized to take into account the triaxial stress conditions. The parameters used in the equivalent uniaxial stress-strain curve are determined from the failure surface defined in the principal stress space. The implementation in finite elements is based on the consideration of smeared cracks with cracks rotating according to the directions of the principal stresses. Also, an embedded reinforcement model was implemented to represent existent reinforcing bars. Finally, some results are compared with experimental data from the literature to demonstrate the validity of the numerical model developed.
Brazilian Institute of concrete, International Partner Access
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