An experimental study on elliptical concrete filled columns under axial compression

Jamaluddin, Norwati; Lam, Dennis; Dai, Xuewu; Ye, Jianqiao

doi:10.1016/j.jcsr.2013.04.002

Cited by 99 publications

(66 citation statements)

References 8 publications

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“…A group of the experimental results [33] were not used for the model validation owing to some unexpected trends in some of the reported data. Measured values of material strength and member geometry including imperfections were applied in the models.…”

Section: Validation Of Fe Modelmentioning

confidence: 99%

“…These studies provided a basis upon which design rules for steel EHS members have been formulated [28], including rules for compressive resistance [21], bending [23], flexural buckling [24] and shear [29]. In the context of concrete-filled elliptical hollow section (CFEHS) members, previous experimental studies include compression testing of stub columns [4,30,31], members in bending [32], concentrically-loaded slender columns [33] and eccentrically-loaded columns [34][35][36][37]. The behaviour of CFEHS columns in fire conditions was also examined by [35].…”

Section: Introductionmentioning

confidence: 99%

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Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns

Qiu

McCann

Espinós

et al. 2017

Engineering Structures

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A 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 Qiu, W., McCann, F., Espinos, A., Romero, M. L. and Gardner, L. (2017

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Section: Validation Of Fe Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns

Qiu

McCann

Espinós

et al. 2017

Engineering Structures

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show abstract

“…Values of SI that are higher than 1.0 suggest a positive interaction between the steel tube and the concrete core, and good concrete confinement [17] SI is described as where N e is the experimental value of ultimate strength capacity of CFHS and the summation of the load-bearing capacity of the steel tube and core concrete, N u .…”

Section: Analytical Considerationmentioning

confidence: 99%

Ultimate strength capacity of a square hollow section filled with fibrous foamed concrete

Khairuddin

Rahman

Jamaluddin

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Concrete-filled sections used as building columns have become popular due to their architectural and structural elements. In recent years, there has been a renewed call for the improvement of materials used as concrete to fill the composite columns. Among these materials, foamed concrete has received great attention due to its structural characteristics and its potential as a construction material used in hollow sections. However, its behaviors as infill material in a hollow section, such as its strength and failure mode, should be investigated. In this study, experimental research was conducted to compare the experimental and theoretical values of its ultimate strength capacity. Eight specimens of hollow steel sections with two different thicknesses were filled with fibrous foamed concrete and then subjected to compression load. The obtained results were compared with those obtained from a hollow section with the same thicknesses, but were filled with normal foamed concrete. Results show that the ultimate strength capacity of the experimental value is the same as that of the theoretical value based on Eurocode 4. The largest percentage values between theoretical and experimental results for thicknesses of 2 and 4 mm are 58% and 55%, respectively.

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“…After the concrete is casted, the specimen was cured for 12 hours in an environment with fixed temperature and humidity conditions. After the concrete was cured, the top steel plate was welded to the specimen (Jamaluddin et al [26]).  is the ratio of longitudinal reinforcement, s is the stirrup spacing.…”

Section: Specimensmentioning

confidence: 99%

Study on Axial Compression Bearing Capacity of Reinforced Concrete Filled Steel Tube Members

Zha¹,

Li²,

Wang³

et al. 2016

Volume 12 Number 2

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ABSTRACT:The bearing capacity equation of reinforced concrete filled steel tube (RCFST) members under axial loads is derived by using the combined unified and limit equilibrium theories. The concrete strength increase due to the constraint effect of the steel tube is taken into account through the use of unified theory; whereas the concrete strength increase due to the constraint effect of the stirrups is considered through the use of the limit equilibrium theory. Three-dimensional nonlinear finite element analysis and experimental tests were carried out and the corresponding results are reported in this paper. The comparisons of the numerical, experimental and theoretical results show that there are in good agreement between these three different methods. However, the present theoretical analysis model is not only simple and convenient to use but also consistent with existing Chinese design codes for CFST columns.

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An experimental study on elliptical concrete filled columns under axial compression

Cited by 99 publications

References 8 publications

Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns

Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns

Ultimate strength capacity of a square hollow section filled with fibrous foamed concrete

Study on Axial Compression Bearing Capacity of Reinforced Concrete Filled Steel Tube Members

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