Estudo do comportamento estrutural do conector Crestbond considerando variações geométricas e mecânicas

• Autor(a) principal: Dutra, Ciro Maestre Y
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3838
• topic: Engenharia Civil; Conector de cisalhamento; Crestbond; Estruturas mistas; Estruturas metálicas; Método dos elementos finitos; Civil Engineering; Shear connector; Crestbond; Composite structures; Metal structures; Finite element method; CNPQ::ENGENHARIAS::ENGENHARIA CIVIL

This work presents the development of a parametric study on Crestbond shear connector through numerical modeling, evaluating its behavior with respect to strength and to the relative displacement between the concrete slab and the shear connector. The study covers the conception and improvement of numerical models for the parametric study, the development of an extensive research on the connector s parameters affecting its behavior, and an equation to predict the connector s ultimate strength, proposed at the end. The numerical models were created within the Finite Element software Abaqus, using nonlinear analysis and the concrete damaged plasticity model. The parametric study consisted on the analysis of 88 numerical simulations of push-out tests, as described on EN 1994-1-1:2004. The connection behavior was studied through these numerical tests. The obtained results allowed to define how each studied parameter influences the connector s behavior. It was also possible to define the desirable characteristics for the connector to be used in practice. In addition to these results, it was proposed a semi-empirical equation to evaluate the connector s ultimate strength which showed excellent correlation with most of the models, both experimental and numerical.