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Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns
HighlightsConcrete-filled elliptical hollow section (CFEHS) beam-columns modelled numerically.Extensive parametric study varying key variables across 360 specimens conducted.Results compared to current Eurocode 4 rules for circular and rectangular members.Current rules are suitable for columns in combined compression and uniaxial bending.Recommend to use buckling curves b and c for columns in axial compression.
AbstractA numerical model simulating the behaviour of elliptical concrete-filled columns under either concentric or eccentric compressive load has been developed in ABAQUS. The numerical results have been compared against a range of experimental results for ultimate load, load–deflection behaviour and failure modes, with good agreement observed. An extensive parametric study has been undertaken whereby the slenderness, load eccentricity, cross-sectional geometry and reinforcement ratio of the concrete-filled columns were varied, creating a data set upon which to formulate design guidance since currently there are no specific provisions in the European Standard EN 1994-1-1 [1] for the design of concrete-filled steel elliptical section columns or beam-columns. It is shown that the current provisions of EN 1994-1-1 [1] for the design of concrete-filled steel columns of circular or rectangular cross-section are also appropriate for the design of members of elliptical cross-section, employing either buckling curve b or c, depending on the level of steel reinforcement. Finally, an assessment is made of the reliability of the design proposals for concrete-filled elliptical hollow section columns and beam-columns.
Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns
HighlightsConcrete-filled elliptical hollow section (CFEHS) beam-columns modelled numerically.Extensive parametric study varying key variables across 360 specimens conducted.Results compared to current Eurocode 4 rules for circular and rectangular members.Current rules are suitable for columns in combined compression and uniaxial bending.Recommend to use buckling curves b and c for columns in axial compression.
AbstractA numerical model simulating the behaviour of elliptical concrete-filled columns under either concentric or eccentric compressive load has been developed in ABAQUS. The numerical results have been compared against a range of experimental results for ultimate load, load–deflection behaviour and failure modes, with good agreement observed. An extensive parametric study has been undertaken whereby the slenderness, load eccentricity, cross-sectional geometry and reinforcement ratio of the concrete-filled columns were varied, creating a data set upon which to formulate design guidance since currently there are no specific provisions in the European Standard EN 1994-1-1 [1] for the design of concrete-filled steel elliptical section columns or beam-columns. It is shown that the current provisions of EN 1994-1-1 [1] for the design of concrete-filled steel columns of circular or rectangular cross-section are also appropriate for the design of members of elliptical cross-section, employing either buckling curve b or c, depending on the level of steel reinforcement. Finally, an assessment is made of the reliability of the design proposals for concrete-filled elliptical hollow section columns and beam-columns.
Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns
Qiu, W. (author) / McCann, F. (author) / Espinos, A. (author) / Romero, M.L. (author) / Gardner, L. (author)
Engineering Structures ; 131 ; 90-100
2016-10-14
11 pages
Article (Journal)
Electronic Resource
English
Experimental study of slender concrete-filled elliptical hollow section beam-columns
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Numerical analysis of slender elliptical concrete filled columns under axial compression
| Online Contents | 2014