Avaliação de estados limites de serviço em vigas de concreto sujeitas ao efeito da resistência do aço.

Abstract

The analysis of the interaction between steel and concrete in a structural project is crucial for the safety, strength, and stability of buildings. To ensure this safety, the NBR 6118:2023 standard defines the limit states, whether "ultimate" or "service," to assess the minimum structural requirements. The objective of the study is to analyze how the tensile strength of CA-50 and CA-50 S/AR reinforcing bars behaves according to the methodology described by the NBR 6118:2023, recommended for the evaluation of the serviceability limit state due to excessive deformations (ELS-DEF) and for the assessment of the limit state of crack opening (ELS-W). In this context, although higher strength results in a reduction of the steel area when using CA-50 S/AR bars, it also leads to an increase in deformations and crack opening in the beams.