Análise e dimensionamento de estruturas bidimensionais pelo método de bielas e tirantes
Reinforced concrete structures have, in general, a linear behavior of stress and strain through cross-section, which are governed by Bernoulli's hypothesis. However, there are certain elements’ regions where this linearity does not operate. These structures have static and geometric discontinui...
| Autor principal: | Branco, Mayra |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/15683 |
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| Resumo: |
Reinforced concrete structures have, in general, a linear behavior of stress and strain through cross-section, which are governed by Bernoulli's hypothesis. However, there are certain elements’ regions where this linearity does not operate. These structures have static and geometric discontinuities and are governed by Saint-Venant's principle. In these cases, it is not recommended to design them based on empirical criteria. In this regard, the strut-and-tie method offers more accuracy to the project of structure elements with discontinuity. Therefore, this work aims to design deep beams by the strut-and-tie method, analyzing its applicability. The first deep beam model was designed based on four sources, which are Schlaich et al. (1987), American code ACI 318 (ACI, 2011), European code CEB-FIP Model Code 2010 (FIB, 2012) and Brazilian code NBR 6118 (ABNT, 2014). The second deep beam analyzed was designed using the Brazilian code only. With the results comparison, it was observed that the American code is a more complete source of strut-and-tie models, Schlaich et al. (1987) have some overpast recommendations, and Brazilian and European codes mention the method in more simplified ways. In general, the application simplicity of strutand- tie models was noticed, confirming its advantages and importance for the design of elements with discontinuity. |
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