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Master's Dissertation
DOI
https://doi.org/10.11606/D.18.2014.tde-12122014-090514
Document
Author
Full name
Solly Exman Kleingesinds
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2014
Supervisor
Committee
Ramalho, Marcio Antonio (President)
Furlan Junior, Sydney
Haach, Vladimir Guilherme
Title in Portuguese
Influência do efeito arco sobre o custo de estruturas de suporte em concreto armado para edifícios de alvenaria estrutural
Keywords in Portuguese
Alvenaria estrutural
Efeito arco
Interação entre estruturas
Abstract in Portuguese
Este trabalho trata de uma avaliação do eventual benefício econômico que a consideração do chamado efeito arco pode proporcionar aos projetos de estruturas de suporte em concreto armado para edifícios de alvenaria estrutural. Após uma revisão bibliográfica e exposição teórica dos princípios do assunto, três edifícios reais são estudados, empregando-se o Método dos Elementos Finitos. Para cada exemplo, dois modelos de cálculo distintos são desenvolvidos: o tradicional, que ignora o efeito arco, e aquele que o considera. No caso dos modelos que consideram o efeito arco, as concentrações de tensões de compressão nas paredes, nas proximidades dos apoios, são verificadas quanto à segurança estrutural. Então, as vigas de suporte são dimensionadas de acordo com os dois modelos de cálculo, e os resultados obtidos são comparados do ponto de vista dos esforços solicitantes nas vigas, deslocamentos, armaduras dimensionadas e quantidades de materiais necessários. Finalmente, para ambas as soluções, para cada um dos três edifícios, as estruturas de suporte tem seus custos de construção avaliados e comparados, de forma a se evidenciar o benefício da consideração do efeito arco.
Title in English
Influence of the arch effect consideration on the loadbearing structure cost for structural masonry buildings
Keywords in English
Arch effect
Structural interaction
Structural masonry
Abstract in English
This work deals with the assessment of the potential economic benefit that the consideration of the so-called arch effect can provide to the design of support reinforced concrete structures for structural masonry buildings. After a literature review, some theoretical fundamentals on the studied subject are presented and three real building cases are studied using the Finite Elements Method. For each building case, two different numerical models are used: the regular one, without the arch effect, and the model that takes it into account. When the arch effect is considered, the regions subjected to compressive stress concentrations are checked in order to verify the structural safety. As for the support beams, the internal forces are obtained and the beams are dimensioned considering both the described numerical models. Then the obtained results are compared, focusing on internal forces, displacements and consumption of materials. Finally, for each studied case and for both numerical models used the construction costs are evaluated and compared in order to demonstrate the benefit of the arch effect consideration.
 
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Solly_definitivo.pdf (8.16 Mbytes)
Publishing Date
2015-01-07
 
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