Non-constant biaxial bending capacity assessment of CFST columns through interaction diagrams
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Otros documentos de la autoría: Espinós, Ana; Albero, Vicente; Romero, M. L.; Mund, Maximilian; Meyer, Patrick; Schaumann, Peter
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https://doi.org/10.12989/scs.2019.32.4.521 |
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Título
Non-constant biaxial bending capacity assessment of CFST columns through interaction diagramsAutoría
Fecha de publicación
2019Editor
Korea Institute of Science and Technology InformationISSN
1229-9367; 1598-6233Cita bibliográfica
ESPINOS, Ana, et al. Non-constant biaxial bending capacity assessment of CFST columns through interaction diagrams. Steel and Composite Structures, 2019, vol. 32, núm. 4, p. 521-536Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.koreascience.or.kr/article/JAKO201924750735811.pageVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
The mechanical response of concrete-filled steel tubular (CFST) columns subjected to pure compression or uniaxial bending was studied in depth over the last decades. However, the available research results on CFST ... [+]
The mechanical response of concrete-filled steel tubular (CFST) columns subjected to pure compression or uniaxial bending was studied in depth over the last decades. However, the available research results on CFST columns under biaxial bending are still scarce and the lack of experimental tests for this loading situation is evident. At the same time, the design provisions in Eurocode 4 Part 1.1 for verifying the stability of CFST columns under biaxial bending make use of a simplistic interaction curve, which needs to be revised. This paper presents the outcome of a numerical investigation on slender CFST columns subjected to biaxial bending. Eccentricities differing in minor and major axis, as well as varying end moment ratios are considered in the numerical model. A parametric study is conducted for assessing the current design guidelines of EN1994-1-1. Different aspect ratios, member slenderness, reinforcement ratios and load eccentricities are studied, covering both constant and variable bending moment distribution. The numerical results are subsequently compared to the design provisions of EN1994-1- 1, showing that the current interaction equation results overly conservative. An alternative interaction equation is developed by the authors, leading to a more accurate yet conservative proposal. [-]
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Steel and Composite Structures, 2019, vol. 32, núm. 4, p. 521-536Derechos de acceso
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