Reliability assessment of cold-formed steel beams by the FORM method.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorToledo, Fernanda Ferra Andrade-
Autor(es): dc.creatorFreitas, Marcílio Sousa da Rocha-
Autor(es): dc.creatorBrandão, André Luis Riqueira-
Data de aceite: dc.date.accessioned2025-08-21T15:10:23Z-
Data de disponibilização: dc.date.available2025-08-21T15:10:23Z-
Data de envio: dc.date.issued2021-11-18-
Data de envio: dc.date.issued2021-11-18-
Data de envio: dc.date.issued2020-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/jspui/handle/123456789/13968-
Fonte completa do material: dc.identifierhttps://doi.org/10.1590/0370-44672020740048-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1004308-
Descrição: dc.descriptionThis article presents a procedure for the reliability assessment of cold-formed steel beams based on the Direct Strength Method (DSM) and the Effective Section Method (ESM). Using a comprehensive database, a statistical analysis of the test results was performed to determine the statistical properties of the professional factor random variable. The statistical parameters related to material strength, geometric properties and load effects were obtained from established references for reliability analysis. Safety levels compatible with the North American and the Brazilian codes relating to structural design of cold-formed steel members have been established. The first-order reliability method (FORM) was used to calculate resistance factors φ for usual nominal live-dead ratios. The results of the reliability analysis showed that the DSM and ESM design methods have similar levels of reliability. The same resistance factor as the DSM can be used for the ESM, without compromising the minimum level of reliability established. The results obtained with the LRFD calibration data, presented a good approximation with the load factor φ = 0.90, except for the distortional mode. With the LSD calibration data, values well below the specified were required in order to achieve the required level of reliability. It was also found that the load factor γ = 1.25, in the format of the Brazilian standard, could reach the safety requirements established for all buckling modes.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License. Source: The article PDF.-
Palavras-chave: dc.subjectCold-formed steel-
Palavras-chave: dc.subjectReliability index-
Palavras-chave: dc.subjectProbability distribution-
Palavras-chave: dc.subjectBending-
Título: dc.titleReliability assessment of cold-formed steel beams by the FORM method.-
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