Teoria do dano concentrado aplicada ao cálculo da flecha imediata em vigas de concreto armado

Detalhes bibliográficos
Ano de defesa: 2019
Autor(a) principal: Souza, Adysson André Fortuna de
Orientador(a): Amorim, David Leonardo Nascimento de Figueiredo
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Não Informado pela instituição
Programa de Pós-Graduação: Pós-Graduação em Engenharia Civil
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://ri.ufs.br/jspui/handle/riufs/17134
Resumo: The deflection evaluation in beams is a fundamental step for structural design development, which aims to estimate the behavior of the structure in service situation. In this step, is analyzed the largest axis bent displacement for the structural element. In a reinforced concrete beam, this displacement has a nonlinear behavior, and to better describe it, a nonlinear structure analysis method is required. Currently, some standards adopt the Branson Formula or the Bilinear Method that use an effect weighting between Stages I and II in an attempt to specify the immediate deflection in reinforced concrete beams. However, both calculation methods are a linear structural analysis method. Although, this study proposes a new alternative for quantifying deflection in reinforced concrete beams using the Lumped Damage Mechanics. This is a nonlinear analysis method using concepts of fracture mechanics and damage mechanics coupled with plastic hinges. The accuracy of the developed formula was verified through comparisons with experimental works developed by other authors, as well as comparing with the Branson Formula, the Bischoff Method which is an adaptation of the Branson Formula, and the Bilinear Method. The results showed that the proposed procedure needs modifications in order to better describe the mechanical behavior of the beams analyzed in Stage II.