Avaliação dos critérios para análise da estabilidade global em edifícios de concreto armado: estudo de caso
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Data
2014-10
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Editor
Ricardo Prado Abreu Reis
Resumo
The analysis of stability structures is fundamental, because there is a major trend in the construction of taller and slender buildings. This paper present a study on the global stability reinforcement structures, where to for the determination of the second-order effects, was considered the material nonlinearity and geometric nonlinearity that to considered a displacement position of the structure. It was determined two parameters of stability: the α parameter, what defines the need for consideration of second order effects and γz coefficient, that determined the need the second order effects and can be used as an amplifier coefficient of efforts first order to estimate the second effects. In example presented, it was used the EBERICK V. 6 software (AltoQI), how complement the analysis. This program considers the geometric nonlinearity by P–Delta process, which is a method which provides more accurate results the effects of second order. Furthermore, it was used the analytical method of associated frames with the assistance FTOOL Version 2008 (PUC-Rio) software for the get of the stability parameters, in order to make a comparison between numerical and analytical results, and discuss the influence of the effects second the global stability structures. The results presented emphasize the importance of using rigid cores in reinforced concrete buildings as the global stability analysis of structures.
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Palavras-chave
Concreto, Efeitos de segunda ordem, Parâmetros de estabilidade, P-Delta, Concrete, Second order effects, Stability parameters, P-Delta process
Citação
LACERDA, Maiza Moana Silva; FLORÊNCIO, Ágatha Cristine; SILVA, Wellington Andrade da; DELALIBERA, Rodrigo Gustavo. Avaliação dos critérios para análise da estabilidade global em edifícios de concreto armado: estudo de caso. Revista Eletrônica de Engenharia Civil, Goiânia, v. 9, n. 2, 2014. Disponível em: <https://www.revistas.ufg.br/reec/article/view/28875/17196>.