Concrete Filled Columns
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Optimum design of steel columns filled with concrete via genetic algorithm: environmental impact and cost analysis
Abstract The use of concrete-filled tubular columns as part of structural systems has steadily increased throughout the years. The growing demand for structural elements of this nature is a direct result of the possibility to use various cross-section shapes that have increased strength, along with resistance to fire and other corrosive agents. The main obje
REM - International Engineering Journal. Publicado em: 2022
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2. Experimental analysis of bolts employed as shear connectors in circular concrete-filled tube columns
Resumo Este estudo apresenta análises experimentais e teóricas do uso de parafusos como conectores de cisalhamento em pilares mistos de aço em seção tubular circular preenchidos com concreto (PMPCs). Os resultados obtidos experimentalmente são comparados com os resultados das formulações propostas pela norma ABNT NBR 16239:2013. Os ensaios são de ci
Rev. IBRACON Estrut. Mater.. Publicado em: 20/05/2019
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3. Buckling of Slender Concrete-Filled Steel Tubes with Compliant Interfaces
Abstract This paper presents an exact model for studying the global buckling of concrete-filled steel tubular (CFST) columns with compliant interfaces between the concrete core and steel tube. This model is then used to evaluate exact critical buckling loads and modes of CFST columns. The results prove that interface compliance can considerably reduce the cr
Lat. Am. j. solids struct.. Publicado em: 2017-10
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4. Temperature field of concrete-filled steel tubular columns in fire
Abstract The composite structures formed by the association of steel profiles with concrete have shown to be an advantageous alternative, improving the behavior of the steel structures concerning their load capacity, stiffness, and durability, under fire conditions. The concrete-filled tubular columns have become an attractive alternative for the civil const
REM, Int. Eng. J.. Publicado em: 2017-06
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5. Numerical study of confinement in short concrete filled steel tube columns
This study presents a numerical investigation into the behaviour of short concrete filled steel tubular (CFST) columns. Three Dimensional Nonlinear finite element analysis of the compression process is performed using commercial software ABAQUS v6.9 (2009). Steel tubes of different geometries and in-filled with different grades of concrete are chosen for mod
Lat. Am. j. solids struct.. Publicado em: 2014-12
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6. Numerical study of concrete-filled steel composite (CFSC) stub columns with steel stiffeners
Numerical study of concrete-filled steel composite (CFSC) stub columns with steel stiffeners is presented in this paper. The behaviour of the columns is examined by the use of the finite element software LUSAS. Results from nonlinear finite element analyses are compared with those from corresponding experimental tests which uncover the reasonable accuracy of
Lat. Am. j. solids struct.. Publicado em: 2014-08
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7. Behaviour of stiffened concrete-filled steel composite (CFSC) stub columns
This paper investigates the behaviour of axially loaded stiffened concrete-filled steel composite (CFSC) stub columns using the finite element software LUSAS. Modelling accuracy is established by comparing results of the nonlinear analysis and the experimental test. The CFSC stub columns are extensively developed using different special arrangements, number,
Lat. Am. j. solids struct.. Publicado em: 2013-03
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8. Colunas mistas esbeltas de aço preenchidas com concreto de alta resistencia em temperatura ambiente e em situação de incendio / Mixed slender steel columns filled with high strenght concrete in room temperature and fire situation
In this work, it was investigated in laboratory the effect of fire in slender steel columns unfilled and filled with high strength concrete submitted to three different levels of axial load (30%, 50% and 70%), which is the relation between the axial load to be applied in fire situation and the ultimate load obtained in the column test to room temperature. So
Publicado em: 2009
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9. Nonlinear numerical analysis of circular concrete filled steel short columns under fire condition / Modelos numéricos de pilares mistos curtos de seções circulares de aço preenchidos com concreto em situação de incêndio
Os pilares mistos de aço preenchidos com concreto, quando submetidos a elevadas temperaturas, apresentam comportamento estrutural bastante satisfatório e reduzem no concreto o fenômeno denominado spalling, devido ao confinamento imposto pelo tubo de aço, mais pronunciado em seções tubulares circulares. Destaca-se ainda a reduzida taxa de aquecimento de
Publicado em: 2009
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10. Slender concrete filled steel columns with square section in fire condition / Pilares mistos esbeltos em aço preenchidos com concreto, de seção quadrada, em situação de incendio
O desenvolvimento técnico e científico fez surgir sistemas estruturais mistos, entre eles os pilares mistos preenchidos, com grande aplicação em edifícios altos. Como a estrutura mista tem um bom comportamento estrutural aliado a uma redução de custos com materiais, mão-de-obra e tempo de execução, ela tem tido um crescente avanço na utilização
Publicado em: 2009
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11. Eurocode structural fire design and its application for composite circular hollow section columns
The tabular structural fire design method for centrally loaded composite columns consisting of concrete filled steel circular hollow sections proposed in EN 1994-1-2:2005 (Eurocode 4: Design of Composite Steel and Concrete Structures - Structural Fire Design) is described here. A design procedure is then discussed, based on the determination of the temperatu
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-03
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12. Análise teórico-experimental de pilares mistos preenchidos de seção circular / Theoretical and experimental analysis of circular concrete-filled steel tubular columns
Concrete-filled steel tubular columns are structural elements made of a steel tube filled with structural concrete. The main objective of this work was study the global behavior of concrete-filled steel tubular columns. For this, some variables were evaluated: concrete compressive strength (fc), length-to-diameter ratio (L/D), diameter-to-thickness ratio (D/
Publicado em: 2008