Slab Reinforcement
Mostrando 13-24 de 26 artigos, teses e dissertações.
-
13. Estudo da continuidade em ligações laje-viga-pilar em estruturas pré-moldadas de concreto
The present research deals with the study of continuity in slab-beam-column connections in precast concrete structures, wherein an experimental investigation about the contribution of longitudinal reinforced bars, passing on the side of the column in the top of the slab, on the connector flexural stiffness. For this study, a beam-to-column connection was sel
Publicado em: 2007
-
14. Confinamento dado por lajes e vigas melhorando a resistência do pilar que as cruza. / Confinement given for slabs and beams improving the strength of the column that crosses them.
The goal of this paper is to study the effect of the confinement in connections of concrete columns having certain strength with lower strength concrete slabs or beams. It was intended to develop a better understanding of this subject, still little explored, to evaluate some code recommendations and, where necessary and possible, to suggest a alternative sol
Publicado em: 2007
-
15. Connections and slab reinforcement of concrete-steel composite beams. / Ligações e armaduras de lajes em vigas mistas de aço e de concreto.
The use of composite steel-concrete beams is increasing in Brazil and in the world, because this is to take advantage of the best properties of each material. Steel has an excellent response to compression and tension and concrete has to compression. Composite beams include basically the steel beam, concrete slab, connectors and reinforcement. Some phenomena
Publicado em: 2006
-
16. Análise probabilística do comportamento ao longo do tempo de elementos parcialmente pré-moldados com ênfase em flechas de lajes com armação treliçada / Probabilistic analysis of the long-term behavior of partially precast elements, with emphasis on deflections of slabs with lattice reinforcement
O objetivo principal deste trabalho é apresentar um modelo de análise probabilística do comportamento ao longo do tempo de estruturas de concreto. Para isso, é realizada a análise probabilística em conjunto com análise numérica. A análise numérica é realizada através de um programa computacional, baseado no método dos elementos finitos, que cons
Publicado em: 2006
-
17. 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
-
18. Interação de paredes em alvenaria estrutural cerâmica sob ações verticais / The interaction of ceramic structural masonry walls under vertical loads
The main goal of the present work is to clarify, under the structural point of view, the interaction of walls with running bond under vertical loads, by means of experimental and numerical analyses. To allow the execution of complex tests, small-scale models techniques are used. The studies are accomplished on the related themes: interaction of structural ma
Publicado em: 2005
-
19. Composite beam-column connection Theoretical and experimental analysis / Ligações mistas viga-pilar - análise teórica e experimental
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 sl
Publicado em: 2004
-
20. THEORETICAL-EXPERIMENTAL BEHAVIOR STUDY OF COMPOSITE DECK-SLAB WITH INCORPORATE FORMED STEEL SHAPE / ESTUDO TEÓRICO-EXPERIMENTAL DO COMPORTAMENTO DE LAJE MISTA COM PERFIS INCORPORADOS DE CHAPA DOBRADA
This work presents a new type of composite deck-slab using incorporate formed steel profiles. The steel profile replaces the reinforcement bars, the form and charry system. The structural system is built by one composite deck-slab with C stiffness steel profile, filed with reinforced concrete. It was performed ten tested and it was analyzed the positive mome
Publicado em: 2003
-
21. Estudo comparativo de respostas estruturais antes da cura do concreto de formas metálicas incorporadas às lajes
Composite slabs are those in which cold formed steel sheets, fitted in each other at the edges, are used as shuttering, capable of supporting the wet concrete and construction loads, and as a positive reinforcement for the slab after concrete has hardened. There are some means of providing interlocking between the profiled steel sheet and the concrete that r
Publicado em: 2003
-
22. Análise dos mecanismos resistentes e das similaridades de efeitos da adição de fibras de aço na resistência e na ductilidade à punção de lajes-cogumelo e ao cisalhamento de vigas de concreto. / Analysis of resistant mechanisms and similarities of the addition effect of steel fibers on strength and ductility to both the punching shear of flat slabs and the shear of concrete beams.
One of the main problems of flat slabs concerns the punching shear failure of the slab-column connection. This form of failure must be avoided, providing flat slabs with the best conditions for the development of yielding mechanisms of the flexural reinforcement before the occurrence of shear failure. The addition of steel fibers to concrete elements subject
Publicado em: 2002
-
23. 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
-
24. Experimental punching shear analysis of reinforced and prestressed concrete slabs / Análise experimental da punção em lajes de concreto armado e protendido
The use of flat plates may offer some economical and aesthetic benefits when compared with other structural systems. The use of post-tensioned slabs may offer other advantages, as a better crack and deflection control and a thinner slab for the same span and load conditions. This work presents some experimental results and conclusions about the punching shea
Publicado em: 2001