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Uncertainty modelling of critical column buckling for reinforced concrete buildings

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Abstract

Buckling is a critical issue for structural stability in structural design. In most of the buckling analyses, applied loads, structural and material properties are considered certain. However, in reality, these parameters are uncertain. Therefore, a prognostic solution is necessary and uncertainties have to be considered. Fuzzy logic algorithms can be a solution to generate more dependable results. This study investigates the material uncertainties on column design and proposes an uncertainty model for critical column buckling reinforced concrete buildings. Fuzzy logic algorithm was employed in the study. Lower and upper bounds of elastic modulus representing material properties were defined to take uncertainties into account. The results show that uncertainties play an important role in stability analyses and should be considered in the design. The proposed approach is applicable to both future numerical and experimental researches. According to the study results, it is seen that, calculated buckling load values are stayed in lower and upper bounds while the load values are different for same concrete strength values by using different code formula.

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Authors and Affiliations

  1. Civil Engineering Department, Suleyman Demirel University, Isparta, 32260, Turkey

    KASIM A KORKMAZ, FUAT DEMIR & HAMIDE TEKELI

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  1. KASIM A KORKMAZ
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  2. FUAT DEMIR
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  3. HAMIDE TEKELI
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Correspondence to KASIM A KORKMAZ.

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KORKMAZ, K.A., DEMIR, F. & TEKELI, H. Uncertainty modelling of critical column buckling for reinforced concrete buildings. Sadhana 36, 267–280 (2011). https://doi.org/10.1007/s12046-011-0013-9

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  • DOI: https://doi.org/10.1007/s12046-011-0013-9

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