Análise dinâmica de edifícios de concreto armado sob ação de vento utilizando método discreto da NBR 6123:1988
Due to the development of new techniques and improvements of structural analysis methods, it was possible to build taller buildings. With this the winds that reach these buildings can generate structural damage or induce discomfort to residents. Following NBR 6123:1988 we can calculate the dynamic f...
| Autor principal: | Silva, Leonardo Torres da |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2023
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/30741 |
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| Resumo: |
Due to the development of new techniques and improvements of structural analysis methods, it was possible to build taller buildings. With this the winds that reach these buildings can generate structural damage or induce discomfort to residents. Following NBR 6123:1988 we can calculate the dynamic forces of the wind by applying the guidelines of the simplified and discrete methods applied as equivalent or dynamic static loads in the nodes of the gantries. This work compared the displacement response of 2 tall reinforced concrete buildings under the action of side wind forces by 3 methodologies: static simplified method, discrete static method and discrete method using harmonic loadings. For this, the mechanical shear building model is applied, which allows structural dynamic analyses in mass-spring-damper systems that have properties equivalent to the properties of buildings. Using these methods applied in the work, it was possible to analyse the response of lateral displacements in a hypothetical 21-storey building located in Campo Mourão/PR and another real building of 23 floors located in Guarapuava/PR. With the comparative analysis of simplified, discrete static and discrete dynamic methods, it is possible to observe that the dynamic model leads to structural responses close to those obtained by static models except when the frequency of harmonic loading is adopted equal to the fundamental frequency of the structure, in this case dynamic analysis results structural resonance response. From the results of this study, it can be observed that both methods respect the safety check for the limit state of excessive deformations presented in ABNT NBR 6118:2014. |
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