Estudo de metodologias para o dimensionamento de vigas de aço e vigas mistas de aço e concreto com perfis celulares

• Ano de defesa: 2015
• Autor(a) principal: Badke Neto, Augusto
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Mestrado em Engenharia Civil; Centro Tecnológico; UFES; Programa de Pós-Graduação em Engenharia Civil
• Palavras-chave em Português: Cellular Steel Beams; Cellular Composite Steel and Concrete Beams; Computational Program; Automation Design; Vigas de aço celulares; Programa computacional; Projeto auxiliado por computador; Automação do projeto; Vigas Mistas de Aço e Concreto com Perfis Celulares; Engenharia Civil; 624
• Link de acesso: http://repositorio.ufes.br/handle/10/1538

Currently with the advancement of welding and cutting technology, beams with circular openings, called cellular beams, have been widely used. The cellular beams can be designed as composite beams when a shear connection exists between the steel section and the concrete slab, and thus achieve even greater spans than conventional composite beam, given the increased stiffness provided by the alveolar section geometry. The NBR 8800:2008 and international standards do not address cellular steel beams and cellular composite steel and concrete beams, which contributes to its use is limited, there is a need for more research on the structural behavior and design of these beams. This paper presents methodologies and develops computational tools for the design of such beams. The calibration of computational program was carried out using numerical examples available in the literature and design methodologies were evaluated by comparing its results with experimental results from the literature. In addition, a parametric study was performed to evaluate the influence of the cellular beam geometry on the ultimate load and failure mode of a series of composite cellular beams with composite slab. As a result, the methodologies studied show that the use of composite cellular beams is advantageous when the ratio between span and height, L/d, is greater than 20.