Joist
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Análise estrutural de vigas mistas treliçadas do tipo steel-joist warren modificada
RESUMO Neste trabalho, determina-se a capacidade resistente e o modo de ruptura de uma viga mista treliçada, bi- apoiada, do tipo steel-joist warren modificada. Esses tipos de treliças, mistas em aço e concreto, são alternativas bastante eficientes para vencer grandes vãos, sendo geralmente empregadas em edifícios comerciais e industriais, além de pon
Matéria (Rio J.). Publicado em: 10/08/2017
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2. Strengthening of structurally damaged wide shallow RC beams using externally bonded CFRP plates
Reinforced concrete wide shallow beams (WSBs) are commonly used in the joist flooring systems. The structural behavior of WSBs strengthened with carbon fiber reinforced polymer (CFRP) reinforcement was studied on isolated beams and as part of full-scale building. The effect of structural damage on the performance of WSBs flexurally strengthened with CFRP pla
Lat. Am. j. solids struct.. Publicado em: 2014-11
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3. Numerical forensic model for the diagnosis of a full-scale RC floor
The paper presents the results of an investigation on the diagnosis and assessment of a full-scale reinforced concrete floor utilizing a 3-D forensic model developed in the framework of plasticity-damage approach. Despite the advancement in nonlinear finite element formulations and models, there is a need to verify models on nontrivial challenging structures
Lat. Am. j. solids struct.. Publicado em: 2012-04
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4. Theoretical and experimental analysis of wood I-beams for formwork purpose / Análise teórica e experimental de vigas de madeira de seção transversal "I" para uso em fôrmas para concreto
Due to the importance of wood in construction and the concern about the environmental impact, engineers have worried about the rationalization of its use through the development of engineered products, seeking the improvement of the technical properties. In this study, the I-beams built with reforestation wood were used for concrete formwork purpose. Their m
Publicado em: 2010
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5. CONECTOR DE CISALHAMENTO EM PERFIL FORMADO A FRIO: ANÁLISE VIA MODELAGEM COMPUTACIONAL
In a composite system, a steel beam (laminated, welded or cold formed) is associated with a concrete slab, forming a composite beam. The interaction between concrete and steel can be mechanical, by friction or, in some cases, only by adherence. One of the major advantages of the composite beams is the increase in strength and stiffness due to association of
Publicado em: 2006
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6. Lattice-reinforced joist slabs cost considering production, transport, assembly and casting / Custos de lajes formadas por vigotas treliçadas considerando a produção, o transporte, a montagem e a concretagem
The use of slabs formed by prefabricated elements in structures of pavements becomes more and more spread in the Brazilian market, mainly lattice reinforced joists. This work purposes to analyze the costs involved in the production process of lattice reinforced joists, during transport, assembly and slab casting. The cost _expression obtained was analyzed in
Publicado em: 2005
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7. Estudo experimental da deformação ao longo do tempo de lajes contínuas e simplesmente apoiadas executadas com vigotas pré-moldadas de concreto.
This research deals with the experimental investigation of time dependent deformations in partially precast floors with composite beam-and-block floor systems made with reinforced concrete lattice joist through the measurement of deflections of prototypes with real dimensions. It is a continuation of several researches of composite beam-and-block floor syste
Publicado em: 2005
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8. Optimization of precast prestressed elements using genetic algorithms / Otimização de componentes de concreto pré-moldado protendidos mediante algoritmos genéticos
Este trabalho trata da otimização de painéis alveolares e vigotas protendidas utilizando Algoritmos Genéticos (AGs). A proposta de tal algoritmo foi inspirada no princípio da seleção natural de indivíduos, onde o mais apto tende a permanecer na população e se reproduzir, passando seu código genético para a próxima geração. Em alguns casos,
Publicado em: 2003
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9. Projeto e execução de lajes unidirecionais com vigotas em concreto armado. / Design and construction of concrete pre-cast slabs with unidirectional ribs.
Neste trabalho é apresentada toda a metodologia para o projeto e a execução de lajes pré-moldadas com nervuras unidirecionais, que são um dos elementos construtivos mais utilizados em edificações de pequeno porte no país, abordando temas relacionados desde detalhes construtivos assim como o cálculo no estado limite de deformação excessiva. São di
Publicado em: 2003
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10. Momentos fletores negativos nos apoios de lajes formadas por vigotas de concreto protendido / Bending moments in the support of slabs made by precast prestressed concrete joist
This work aims the structural analysis in a type of slabs that is increasing its utilization in Brazil. These slabs are made by precast prestressed joists. The main objective of this work is the evaluation of the behavior of this type of slabs by theoretical analysis of the bending moments on the supports of continuous slabs. In the theoretical analysis was
Publicado em: 2002
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11. Bending moments in the support of slabs made by precast joist with lattice reinforcement. / Estudo dos momentos fletores negativos nos apoios de lajes formadas por elementos pré-moldados tipo nervuras com armação treliçada.
This work deal with an usual type of slab in Brazil: slabs made by precast joist with lattice reinforcement. The goal of this work is the structural analysis of bending moments in the supports of slabs made by this kind of precast element. Theoretical and experimental models analyze this type of slab. In the theoretical analysis, the non-linear concrete beha
Publicado em: 2001