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      Avaliação da influência da posição dos conectores de cisalhamento no comportamento de vigas mistas parcialmente revestidas Translated title: Contribution of headed studs to the composite behavior of the partially encased beams

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          Abstract

          A utilização de conectores de cisalhamento, especialmente os conectores tipo pino com cabeça, é um artifício comum para promover o comportamento misto aço-concreto. O embutimento da viga de aço no pavimento permite reduzir a altura total do pavimento sem comprometer a resistência e a rigidez. Nesse trabalho, são estudadas, experimentalmente, posições alternativas para conectores de cisalhamento tipo pino com cabeça em vigas de aço parcialmente revestidas com concreto. Logo, a principal variável é a posição dos conectores e foram estudadas as posições vertical e horizontal. Verticalmente, os conectores foram soldados na face interna da mesa inferior da viga de aço e, na posição horizontal, os conectores foram soldados nas duas faces opostas da alma. Os resultados mostraram que os conectores contribuem para o comportamento misto e para aumentar a resistência da viga embutida; a posição mais eficiente é soldar os conectores na mesa inferior da viga assimétrica de aço.

          Translated abstract

          The use of mechanical shear connectors, mainly headed stud bolts, is the most common way to achieve steel-concrete composite action. The encasement of the steel beam in the depth slab results in increase of strength and stiffness, reducing the total height of the floor. In this investigation, three partially encased composite beams were tested under flexural conditions and the main objective was to investigate some alternative positions for the headed studs. To provide longitudinal shear resistance between the I-shaped beam and the concrete, two positions of the studs were investigated: vertically welded on the bottom flange and horizontally welded on the faces of the web. The experimental results have shown that the headed studs are effective to provide the composite action and increase the bending strength. Furthermore, the headed studs welded vertically on the bottom flange proved to be the most reliable position.

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          Most cited references6

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          Specification for structural steel buildings

          (2010)
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            Effect of reinforced concrete between the flanges of the steel profile of partially encased composite beams

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              Projeto de estruturas de aço e de estruturas mistas de aço e concreto de edifícios: Projeto de Revisão da NBR 8800

              (2006)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                rem
                Rem: Revista Escola de Minas
                Rem: Rev. Esc. Minas
                Escola de Minas (Ouro Preto )
                1807-0353
                June 2008
                : 61
                : 2
                : 239-247
                Affiliations
                [1 ] Universidade de São Paulo Brazil
                [2 ] Universidade de São Paulo Brazil
                Article
                S0370-44672008000200019
                10.1590/S0370-44672008000200019
                9a3fcd66-a588-4ed1-8ca0-5bb0a9933d74

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0370-4467&lng=en
                Categories
                ENGINEERING, CIVIL
                METALLURGY & METALLURGICAL ENGINEERING

                General engineering,Civil engineering
                Composite beam,composite action,stud bolts,partially encased beam,Viga mista,comportamento misto,conectores de cisalhamento,vigas parcialmente revestidas,transferência de esforços

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