2010
DOI: 10.3989/ic.08.045
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Un criterio robusto para la medida del margen –coeficiente– de seguridad

Abstract: RESUMENEn este trabajo se analizan en primer lugar algunos inconvenientes de los habituales coeficientes parciales de seguridad -factores multiplicadores de las cargas-como medida del alejamiento a las condiciones de colapso en el caso de las estructuras con anisotropías importantes, como son especialmente aquellas sin resistencia a la tracción -los arcos de fábrica, como ejemplo paradigmático-Para superar dichas dificultades se propone un criterio sencillo y robusto basado en la contracción de la superficie l… Show more

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“…A most ambitious proposal is based on the implementation of the work of Cervera [16] and it consists of contracting homothetically the yield surface, with the homothetic centre in an interior point that is hypothetically the safest. This proposal is not yet implemented for masonry structures but the idea is very similar with the partial safety factors method, as is described by Ditlevsen [17].…”
Section: Homothetic Contraction Of the Yield Surfacementioning
confidence: 99%
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“…A most ambitious proposal is based on the implementation of the work of Cervera [16] and it consists of contracting homothetically the yield surface, with the homothetic centre in an interior point that is hypothetically the safest. This proposal is not yet implemented for masonry structures but the idea is very similar with the partial safety factors method, as is described by Ditlevsen [17].…”
Section: Homothetic Contraction Of the Yield Surfacementioning
confidence: 99%
“…Hernando as the global minimum of the deterministic partial safety factor γimin can be deduced through the equation 16. (16) It is possible to apply a different focus of the same problem. The geometric place of the points with the same γmin coefficient is a homothetic surface with the yield surface, and with the centre of the homothecy, according to Chebyshew, that is represented on the right image of figure 10.…”
Section: Homothetic Contraction Of the Yield Surfacementioning
confidence: 99%