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Analysis of second-order effects evaluation of steel frames behaviour

    Raminta Venslavavičiūtė Affiliation
    ; Kęstutis Urbonas Affiliation
    ; Vaidotas Šapalas Affiliation

Abstract

The evaluation of second-order effects of steel framed structures can provide different analysis results than using linear analysis methods. In various structural engineering literature were distinguished different methods of analysis: taking or without taking into account second-order effects. It depends on the sensitivity to the horizontal actions. The slenderer the structure, the more sensitive it is to horizontal actions. Using nonlinear methods, the sensitivity of steel frame to second-order impact is considered. This paper shows the importance of evaluations of the second-order effects in behaviour of steel frame structures. Performed investigations reveal the influence of the rotational stiffness of the joints to the behaviour of whole framed structure. Calculation results show that decreased flexibility of the semi-rigid joints increase sensitivity of the framed structure to the second-order effects and vice versa. The identified interdependence between the sensitivity to the second-order effects and the flexibility of the semi-rigid joints highlights the importance of evaluation of such dependencies.

Keyword : numerical modelling, steel framed structures, structural analysis, second-order analysis, Eurocode 3, semi-rigid joints, sensitivity to the second-order effects

How to Cite
Venslavavičiūtė, R., Urbonas, K., & Šapalas, V. (2020). Analysis of second-order effects evaluation of steel frames behaviour. Engineering Structures and Technologies, 12(1), 8-14. https://doi.org/10.3846/est.2020.13400
Published in Issue
Sep 7, 2020
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This work is licensed under a Creative Commons Attribution 4.0 International License.

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