Procedimentos para definição das características geométricas de vigas alveolares de aço para sistemas de piso e de cobertura

• Autor(a) principal: Oliveira, Luiza Baptista de
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3777
• topic: Vigas alveolares; Vigas casteladas; Vigas celulares; Estruturas metálicas; Alveolar beams; Castellated beams; Cellular beams; Metal structures; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::ESTRUTURAS::ESTRUTURAS METALICAS

The growth of steel construction in Brazil in recent years has naturally been accompanied by an increasing demand for resources that support the entire design process of steel structures, from its conception to its realization. In this context, there has been a resurgence of interest in alveolar beams, due to technical and aesthetic advantages that these elements offer, motivated in part by beginning production of steel rolled I profiles in Brazil, from 2002. Generally, the alveolar beams are manufactured from rolled steel I-profiles, by cutting the web along, according to a sinuous symmetrical line so that the halves so obtained can be displaced relative to one another and welded, originating a new beam with a series of web holes, with the same mass as the original profile, but with greater stiffness in the plane of bending, suitable for large spans. Although the alveolar beams are an old solution, abandoned due to rising manufacturing costs in a given time, most recently returned to appear as a competitive solution, due to technological advances in automation of cutting and welding of structural steel. Given the wide range of possibilities available today for the manufacture of alveolar beams, facilitated by the resources of design and computer aided manufacturing, this study aimed to procedures to define the geometric characteristics of alveolar steel beams to floor systems and roof systems, due to the lack of technical updates on this topic. Finally, we present a series of examples of applying the criteria and procedures proposed for various possible situations in the usual structures.