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Master's Dissertation
DOI
10.11606/D.3.2011.tde-10052012-122734
Document
Author
Full name
Pedro Henrique Cerento de Lyra
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2011
Supervisor
Committee
Bittencourt, Túlio Nogueira (President)
Della Bella, João Carlos
El Debs, Ana Lucia Homce de Cresce
Title in Portuguese
Modelagem numérica de estruturas de concreto armado utilizando o programa ATENA.
Keywords in Portuguese
ATENA
Concreto armado
Modelagem numérica
Modelo de fissuração distribuída
Abstract in Portuguese
Com o avanço tecnológico dos computadores e o desenvolvimento de soluções para problemas não lineares através do método dos elementos finitos, hoje é possível fazer uma análise mais complexa e mais próxima da realidade. É de extrema importância à verificação dos resultados obtidos pelos programas com a realidade e saber em quais casos esses modelos podem ser aplicados. Assim, o objetivo deste trabalho é discutir as vantagens e desvantagens da modelagem de estruturas de concreto armado em duas e três dimensões, através dos modelos de fissuras distribuídas. Foram escolhidos três experimentos para a modelagem numérica: o primeiro trata-se de um experimento com uma viga de concreto armado (LEONHARDT; WALTHER, 1962), o segundo experimento também é realizado com uma viga de concreto armado (BRESLER; SCORDELIS, 1963) e o terceiro experimento utiliza vigas de concreto armado em escala reduzida, fabricadas com microconcreto e arame, simulando uma barra de aço lisa (ALMEIDA et al, 2006). Para a modelagem numérica, utilizando-se o modelo de fissuras distribuídas com fissura rotacional e a análise das estruturas de concreto foi escolhido o programa comercial ATENA - "Advanced Tool Engineering Non-linear Analysis".
Title in English
Numerical modelling of reinforcement concrete structures using the program ATENA.
Keywords in English
ATENA
Numerical modeling
Reinforced concrete
Smeared crack model
Abstract in English
The technological advancement of computers and the development of solutions for nonlinear problems by finite element method are now possible to make more complex the analysis and closer to reality. It is extremely important to verify the results obtained by programs with reality and know which cases these models can be applied. So the objective is to discuss the advantages and disadvantages of modeling reinforced concrete structures in two and three dimensions, through the smeared cracking models. Three experiments were chosen to make the numerical modeling: the first is an experiment with a reinforced concrete beam (LEONHARDT; WALTHER, 1962), the second experiment is also a reinforced concrete beam (BRESLER; SCORDELIS, 1963) and the third experiment is reinforced concrete beams with small-scale and made of wire microconcrete simulating flat steel bar (ALMEIDA et al, 2006). For numerical modeling, using the smeared crack model with rotational crack, and analysis of concrete structures was chosen the commercial program ATENA - Advanced Tool Engineering Non-linear Analysis.
 
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Publishing Date
2012-05-11
 
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