Abstract

SANTOS, Maiara Feliciano dos  and  SANTOS, Danilo Pereira dos. Evaluation of the influence of corrosion on the global stability of reinforced concrete columns. Rev. ALCONPAT [online]. 2022, vol.12, n.3, pp.401-421.  Epub Apr 08, 2024. ISSN 2007-6835.  https://doi.org/10.21041/ra.v12i3.592.

This paper analyzes the impact of corrosion on the global stability of reinforced concrete columns, evaluating the effectiveness of the stiffness reduction criteria proposed by ABNT NBR 6118:2014. It was defined through finite element models that corrosion causes the intensification of the second-order effects. However, in critical situations, the failure in the transversal section led to structural collapse even before the stability loss. The study was conducted through nonlinear geometric analyses and applying the γ z coefficient. It was concluded that the subsequent addition of rheological effects could exceed the limits proposed by the ABNT NBR 6118:2014.

Keywords : concrete; corrosion; global stability; second-order effects.

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