Estudo das estruturas de membrana: uma abordagem integrada do sistema construtivo, do processo de projetar e dos métodos de análise / Study of membrane structures: an integrated approach of the constructive system, design process and analysis methods

AUTOR(ES)

Maria Betânia de Oliveira

DATA DE PUBLICAÇÃO

2001

RESUMO

Membrane structures used in roofs are constructive systems formed mainly by structural membrane, which has also the function of sealing. Structural membranes are flexible sheets that resist to external loads due to their form, to their physical characteristics and to their pre-stressing. The pre-stressing of the membrane can be achieved either through its stretching using cables (surface-tensioned membranes) or through gases pressurization (pneumatic structures). These structures are being utilized in roofs over airports, stadiums, industrial facilities, shopping precincts and buildings for industrial or agricultural use, among others. However, membrane structures are not yet well known, studied and used here in Brazil. In this context, this work has as objectives to systematize the scientific knowledge existent on the theme, to introduce it in Brazil and, also, to point out ways for scientific investigation on membrane structures in this country. This research presents the constructive system, the design process and the analysis methods of membrane structures used in roofs. This work systematizes the membrane structural design, with recommendations and study of case. This work proposes an integrated model of research for this technology development in Brazil. This model should assist the coordination and the mutual appreciation of the scientific investigation efforts in the different knowledge areas involved in the membrane structure development

ASSUNTO(S)

membranas protendidas análise estrutural estruturas de membrana coberturas modelo de pesquisa pre-stressed membranes roofs structural analysis design process model of research design projeto pneumatic structures constructive system sistema construtivo processo de projetar estruturas pneumáticas membrane structures

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