Comportamento estrutural de vigas de aço com abertura na alma

• Autor(a) principal: Rodrigues, Flávio
• Data de Publicação: 2007
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/11521
• topic: Finite element analysis; Vierendeel mechanism; Web opening; Shear moment interaction curves; Geometric and material non-line arity; Web Stiffener; Steel and Composite Beams; Parametric Analysis; Análise em elementos finitos; Mecanismo de Vierendeel; Aberturas na alma; Curvas de interação flexão-cisalhamento; Não linear idade física e geométrica; Reforço na alma; Vigas de aço e mistas; Análise paramétrica; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL

Height limitations are frequent in multi-storey buildings due to zoning regulations, economic requirements and esthetical considerations . In order to provide the passage of large pipes and ducts beneath steel beams, huge spaces are normally required, leading many times to unacceptable heights between storeys. There are many possible solutions to solve these problems, such as: Tapered beams, stub girders, composite trusses and haunched beams. Another frequent solution is the opening of holes in the web beam steel to enable the passage of the services. This dissertation has the objective of evaluating and describing the structural behavior of steel beams with web openings of different shapes and sizes. Another aim of this research work is the evaluation of the parameters that directly influence the load carry capacity of the beams with different web openings, such as: Holesh ape, the location of the opening throughout the span, the height hole to height profile ratio, the web slenderness and the location of the load point throughout the span. The evaluation of the different failure mechanisms of steel beams with web openings and the reasons that conducted the collapse of them are also focused on the present work. Finally, a study of the efficiency of the use of longitudinal stiffeners at web openings locations is also presented. The methodology employed for such study was based on a parametric analysis based on the finite elements method.