2020
DOI: 10.1590/1679-78255780
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Evaluation of limit state of stress and strain of free-fixed columns with variable geometry according to criteria from the Brazilian code for concrete structures

Abstract: The ultimate limit state of stability by equilibrium bifurcation, the limit states for stress and strain resulting from this condition were evaluated for an extremely slender real structure of reinforced concrete, with geometry varying along its length. The aspects related to nonlinearities of the material were considered through the recommendations on NBR 6118:2014, from the Brazilian Association of Technical Standards (ABNT). In the analytical solution, developed for stability analysis, all elements of the s… Show more

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Cited by 6 publications
(8 citation statements)
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“…Comparing the results obtained in the previous paper (Wahrhafig et al [2]), it was possible to note that the critical buckling load grew by 14.04% without the creep effect, (t = 0) and 26.52% when the creep effect is taken into account for the final time interval (t = 5000 days). The current adoption of the initial modulus of the concrete instead of the secant modulus contributed to that.…”
Section: Resultssupporting
confidence: 71%
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“…Comparing the results obtained in the previous paper (Wahrhafig et al [2]), it was possible to note that the critical buckling load grew by 14.04% without the creep effect, (t = 0) and 26.52% when the creep effect is taken into account for the final time interval (t = 5000 days). The current adoption of the initial modulus of the concrete instead of the secant modulus contributed to that.…”
Section: Resultssupporting
confidence: 71%
“…In this order, the stresses found were 108.20 MPa and 35.84 MPa The evolution of the relative stresses in each reinforcement bar for case (1) can be seen in Fig. 8 and for case (2) in Fig. 9.…”
Section: Resultsmentioning
confidence: 83%
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