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Master's Dissertation
DOI
https://doi.org/10.11606/D.18.2013.tde-30072013-093003
Document
Author
Full name
Matheus Fernandes de Araújo Silva
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2013
Supervisor
Committee
Haach, Vladimir Guilherme (President)
El Debs, Ana Lúcia Homce de Cresce
Trautwein, Leandro Mouta
Title in Portuguese
Desenvolvimento de modelo analítico para determinação da resistência ao cisalhamento de nós de pórtico externos de concreto armado
Keywords in Portuguese
Cisalhamento
Concreto armado
Método dos elementos finitos
Nós de pórtico
Abstract in Portuguese
Propõe-se um modelo analítico para determinação da resistência ao cisalhamento de nós de pórtico externos em estruturas de concreto armado. Faz-se um estudo de modelos analíticos propostos por pesquisadores e sua aplicação em uma extensa base de dados com resultados experimentais de diferentes ligações, a fim de verificar a eficiência de cada modelo analítico. Em paralelo realiza-se uma análise paramétrica por meio de simulação numérica utilizando o software DIANA® de maneira a compreender o comportamento do nó externo analisando a influência da geometria, nível de tensões no pilar, taxa de armadura da viga e taxa de estribos, e assim propõe-se um modelo de cálculo para a resistência ao cisalhamento com base nos resultados desta análise paramétrica. Por fim o modelo analítico proposto é aplicado na base de dados apresentando bons resultados e comprovando sua eficácia tanto para nós de pórtico externos sem estribo como com estribos.
Title in English
Development of analytical model for predicting the shear strength of exterior reinforced concrete beam-column joints
Keywords in English
Beam-column joint
Finite element method
Reinforced concrete
Shear
Abstract in English
A proposal of an analytical model for determining the shear strength of exterior reinforced concrete beam-column joints is made in this work. A study of analytical models proposed by researchers and their application in a wide database with experimental results is done in order to verify the effectiveness of each analytical model. In parallel a parametric analysis by numerical simulation using the software DIANA® is performed in order to understand the behavior of the joint by analyzing the influence of the geometry, stress level in the column, longitudinal reinforcement ratio of beam and stirrup ratio and thus, it is proposed a model for predicting the shear strength based on the results of this parametric analysis. Finally the analytical design model proposed is applied to the database and presents good results proving its effectiveness for both external joint with and without stirrups.
 
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Publishing Date
2013-07-31
 
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