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Doctoral Thesis
DOI
10.11606/T.18.2004.tde-28022005-163553
Document
Author
Full name
Luciana Maria Bonvino Figueiredo
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2004
Supervisor
Committee
Goncalves, Roberto Martins (President)
Fruchtengarten, Julio
Munaiar Neto, Jorge
Palermo Junior, Leandro
Ribeiro, Luiz Fernando Loureiro
Title in Portuguese
Ligações mistas viga-pilar - análise teórica e experimental
Keywords in Portuguese
chapa de topo
ligações em estruturas de aço
ligações mistas viga-pilar
Abstract in Portuguese
Uma ligação em estruturas de aço é denominada mista quando considera-se a contribuição da laje no seu comportamento. Assim, além do detalhe da ligação em aço, outros parâmetros interferem no comportamento da ligação mista, como a taxa de armadura e o nível de interação entre a laje e a viga de aço. Os métodos de cálculo de ligações mistas derivam do Método dos Componentes proposto pelo Eurocode 3 para cálculo de ligações em aço. Apresenta-se uma adaptação de um destes métodos para cálculo de ligações mistas que representam a realidade brasileira em termos de perfis e detalhes de ligação. Foi elaborado um programa experimental de caráter exploratório envolvendo ligações mistas com chapa de topo estendida. Foram ensaiados modelos simulando pilares internos e pilares de canto. Um modelo numérico foi desenvolvido utilizando o programa Ansys, que permite a análise destas ligações de maneira simples e satisfatória. Os resultados experimentais foram confrontados com os resultados da análise numérica e com os valores obtidos a partir do modelo analítico.
Title in English
Composite beam-column connection – Theoretical and experimental analysis
Keywords in English
beam-column connection
composite connection
extended end-plate connection
steel structures
Abstract in English
A composite joint is a joint between a composite beam and a steel or composite column in which reinforced concrete slab is take into account. The moment-rotation relationship of composite joints depends on a significant number of parameters besides the type and configuration of the steel connection, as for example: the amount of steel reinforcement of the slab and the degree of interaction between the slab and the steel beam section. Based on the Eurocode 3 method for bare steel connection (Components Method), some methods have been developed for prediction the moment capacities of composite connections. I this work, an adaptation of one of these methods has been developed in which steel sections and connections details common in Brazil are considered. A short experimental program was planed in order to understand the composite behaviour of extended end-plate composite beam-column connection. The test specimens were configured as cruciform type and cantilever type. Finally, a Finite Element model was built in Ansys software. The numerical modeling was found to have good approach with experimental results. Some analyses are done involving experimental, numerical and analytical results.
 
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Publishing Date
2005-04-07
 
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