Experimental behaviour of circular concrete filled steel tube columns and design specifications

Ekmekyapar, Talha; AL-Eliwi, Baraa J.M.

doi:10.1016/j.tws.2016.04.004

Cited by 144 publications

(43 citation statements)

References 27 publications

(55 reference statements)

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“…The behaviour of CFST stub columns under axial compression over different crosssectional shapes have been investigated by several authors through various experimental programs (Schneider [2], Han [3], Giakoumelis and Lam [4], Lam and Williams [5], Sakino et al. [6], Tao et al [7], Han et al [8], Ellobody et al [9], Liang and Fragomeni [10], Tahyalan et al [11], Ekmekyapar and Al-Eliwi [12]). Most of them focused on the use of normal strength concrete (NSC), but, more recently, also high strength concrete (HSC) has been included.…”

Section: Introductionmentioning

confidence: 99%

Shape effect on axially loaded high strength CFST stub columns

Ibáñez

Hernández-Figueirido

Piquer

2018

Journal of Constructional Steel Research

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Section: Introductionmentioning

confidence: 99%

Shape effect on axially loaded high strength CFST stub columns

Ibáñez

Hernández-Figueirido

Piquer

2018

Journal of Constructional Steel Research

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“…12 (a) and (c) is in the range of 5%-6%. The predicted values from US standard without considering confinement effect [20] are significantly larger than the tested values while 45% of deviation is observed in Fig. 12 (d).…”

Section: Modified Design Formula For Axial Strengthmentioning

confidence: 71%

Compressive behavior of circular concrete-filled steel tubular columns under freeze-thaw cycles

Gao,

Peng,

Guo

et al. 2020

Journal of Constructional Steel Research

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In this paper, the compressive behavior of circular concrete-filled steel tubular stub columns under freeze-thaw cycles was studied. Influence of different concrete grades and number of freeze-thaw cycles were investigated through experimental study. The results show that with the increase of the number of freeze-thaw cycle, the axial strength of specimens decreases regardless of concrete grade. The axial strength deterioration of the CFST specimens under different freeze-thaw cycles increases with the decrease of concrete strength, so does the reduction of enhancement factor. The ultimate displacement and the ductility indexes of CFST specimens are barely affected by freeze-thaw cycles. Based on the test results, a reduction factor k sr for quantifying the strength reduction of CFST and a factor k csr for considering the strength degradation of core concrete are proposed to predict the ultimate compressive strength of CFST stub column under freeze-thaw cycles.

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“…Steel and concrete composite structures are widely used in civil engineering projects as they make full use of the superior material properties of steel and concrete [1]. e concretefilled steel tube (CFST) column has high bearing capacity, high ductility, strong fire resistance, and good seismic performance; meanwhile, formwork is not needed, so CFSTbased structures can be fabricated swiftly at relatively low cost [2].…”

Section: Introductionmentioning

confidence: 99%

Performance of Special‐Shaped Concrete‐Filled Square Steel Tube Column under Axial Compression

Wang

Zhou

Wei

et al. 2020

Advances in Civil Engineering

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The axial compressive performance of novel L-shaped and T-shaped concrete-filled square steel tube (L/T-CFSST) column was assessed in this study. Ten L/T-CFSST columns were tested to failure under axial load. The experimental data were used to determine various failure modes, bearing capacities, and load-displacement curves. The test parameters included the section form, steel tube thickness, steel yield strength, and slenderness ratio. The axial compressive performance of the L/T-CFSST column proved favorable, and each square steel tube showed strong cooperative performance. The failure mode of the stub column specimen (H/D ≤ 3) was strength failure caused by local buckling of the steel tube and that of the medium-long column member (H/D > 3) was instability failure caused by overall bending of the specimen. A finite element analysis (FEA) model was established and successfully validated by comparison against the test results. Based on the FEA model, parametric analyses were conducted to investigate the effects of steel tube thickness, concrete strength, steel yield strength, and slenderness ratio. The ultimate loads obtained from the experiments and FEA were compared to the results calculated by the available design codes. A formula was established to calculate the axial compressive strength and stability bearing capacity of the L/T-CFSST column accordingly. The calculation results are in close agreement with the FEA and experimental results, and the proposed formula may provide a workable reference for practicing engineers.

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Experimental behaviour of circular concrete filled steel tube columns and design specifications

Cited by 144 publications

References 27 publications

Shape effect on axially loaded high strength CFST stub columns

Shape effect on axially loaded high strength CFST stub columns

Compressive behavior of circular concrete-filled steel tubular columns under freeze-thaw cycles

Performance of Special‐Shaped Concrete‐Filled Square Steel Tube Column under Axial Compression

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