Ultimate capacity od rectangular concrete-filled steel tubular columns under unequal load eccentricities
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Otros documentos de la autoría: Hernández-Figueirido, David; Romero, M. L.; Bonet, J. L.; Montalvá Subirats, José Miguel
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
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http://dx.doi.org/10.1016/j.jcsr.2011.07.014 |
Metadatos
Título
Ultimate capacity od rectangular concrete-filled steel tubular columns under unequal load eccentricitiesFecha de publicación
2012-01Editor
ElsevierISSN
0143-974XCita bibliográfica
Journal of Constructional Steel Research, Volume 68, Issue 1, January 2012Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0143974X11002082Palabras clave / Materias
Resumen
The paper describes 36 experimental tests conducted on rectangular and square tubular columns filled with normal and high strength concrete and subjected to a non-constant bending moment distribution with respect to ... [+]
The paper describes 36 experimental tests conducted on rectangular and square tubular columns filled with normal and high strength concrete and subjected to a non-constant bending moment distribution with respect to the weak axis. The test parameters were the nominal strength of concrete (30 and 90 MPa), the cross-section aspect ratio (square or rectangular), the thickness (4 or 5 mm) and the ratio of the top and bottom first order eccentricities etop/ebottom (1, 0.5, 0 and − 0.5). The ultimate load of each test was compared with the design loads from Eurocode 4, presenting unsafe results inside a 10% safety margin. The tests show that the use of high strength concrete is more useful for the cases of non-constant bending moment, whereas if the aim is to obtain a more ductile behavior the use of concrete-filled columns is more appealing in the cases of normal strength concrete with non-constant bending moments because, although they resist less axial force than the members with HSC, they obtain a softened post-peak behavior. [-]
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