Análise não-linear de lajes de concreto armado pelo método dos elementos finitos

• Autor(a) principal: BANDEIRA, Mirtes Silva
• Data de Publicação: 2006
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tde/676
• topic: Lages de concreto armado; Lajes de concreto armado Análise não-linear; Método dos elementos finitos (Engenharia de estruturas); Lages de concreto armado; Lajes de concreto armado Análise não-linear; Método dos elementos finitos (Engenharia de estruturas); CNPQ::ENGENHARIAS::ENGENHARIA CIVIL

In this work was carried simulations in the slabs and compared results with those obtained in the experimental research of Campos (2000) and Pires (2003), held on the slabs reinforced concrete brought to the failure by bending for inquiry of strengthening using uper the surface. For the modeling version 8.1.2 of DIANA was used and the inquiry of the behavior of the slabs was made through nonlinear analysis, adopting for the models elements of shell and solid. The behavior of the slabs was analyzed through the displacements central and approached the influence of the positioning of the reinforcement, the supports and the parameters that define the behavior of the concrete in the softening phase, being distinguished it maximum resistance of the concrete in the tension. The results are indicative of the good performance of the applied numerical models and that, the programs that use the concepts of the Fracture Mechanics in its formularizations, consist in powerful tool to reduce the amount of tests for the study of some specific phenomena, since that if they have resulted trustworthy of the behavior of the employed materials.