Theoretical Study on Local Buckling of Steel Plate in Concrete-filled Tube Column under Axial Compression

Qin, Ying; Lu, Jianquan; Cao, Shuangyin

doi:10.2355/isijinternational.isijint-2016-755

Cited by 6 publications

(3 citation statements)

References 23 publications

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“…where ς is the loading stress gradient parameter along the y-direction and is given by Eq. (11). It should be noted that ς = 0 means the steel plate is under uniaxial compression along the x-direction.…”

Section: Formulation For Elastically-restrained Steel Platesmentioning

confidence: 99%

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Local Buckling of Steel Plates in Composite Structures under Combined Bending and Compression

Qin

et al. 2018

ISIJ Int.

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In this paper, explicit local buckling analysis of steel plates in composite structures under combine bending and compression and with elastic restraint against rotation is presented. Unique displacement function, which combines sinusoidal and cosine functions along x-and y-directions and satisfies boundary and loading conditions, is proposed to account for the effect of restraint of concrete and the elastic rotational restraint stiffness along both the loaded and unloaded edges of the steel plates. The explicit local buckling solution for the elastically restrained steel plates in composite structures is simplified to several special cases (e.g., the CS, CC, SS and KS steel plates) subjected to combined bending and compression. To verify the accuracy of the explicit solutions, experimental data, available solutions in the literature, and finite element results are compared, and reasonable agreement has been observed, particularly for the simplified cases. Parametric study is further conducted, and the effects of different parameters such as the aspect ratio and the loading stress gradient parameter on the local buckling stress resultants of steel plates with different boundary conditions are discussed.

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Section: Formulation For Elastically-restrained Steel Platesmentioning

confidence: 99%

“…Long et al 10) proposed explicit solutions for the local buckling of steel plates in CFT columns subjected to eccentric compression and with clamped loaded edges. Qin et al 11) investigated the critical buckling problem of steel plates in CFT columns subjected to uniform compression.…”

Section: Introductionmentioning

confidence: 99%

Local Buckling of Steel Plates in Composite Structures under Combined Bending and Compression

Qin

et al. 2018

ISIJ Int.

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“…This combination is highly effective because the presence of the steel tube enhances the confinement effect of the infilled concrete. The steel tube is capable of resisting bending moments, while the infilled concrete can withstand compression forces acting on the column [6][7][8][9][10][11]. Furthermore, the infilled concrete is helpful to mitigate the local buckling and torsional deformation of the steel tube.…”

Section: Introductionmentioning

confidence: 99%

Structural performance of the concrete-filled tube column with internal triangular units subjected to axial compression

Kim,

Lee,

et al. 2024

PLoS ONE

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This study introduces a novel concrete-filled tube (CFT) column system featuring a steel tube comprised of four internal triangular units. The incorporation of these internal triangular units serves to reduce the width-thickness ratio of the steel tube and augment the effective confinement area of the infilled concrete. This design enhancement is anticipated to result in improved structural strength and ductility, contributing to enhanced overall performance and sustainability. To assess the effectiveness of the newly proposed column system, a full-scale test was conducted on five square steel tube column specimens subjected to axial compression. Among these specimens, two adhered to the conventional steel tube column design, while the remaining three featured the new CFT columns with internal triangular units. The shape of the CFT column, the presence of infilled concrete and the presence of openings on the ITUs were considered as test parameters. The test results reveal that the ductility of the newly proposed CFT column system exhibited a minimum 30% improvement compared to the conventional CFT column. In addition, the initial stiffness and axial compressive strength of the new system were found to be comparable to those of the conventional CFT column.

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Compressive behavior of double skin composite wall with different plate thicknesses

Qin

Shu

Zhou³

et al. 2019

Journal of Constructional Steel Research

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Theoretical Study on Local Buckling of Steel Plate in Concrete-filled Tube Column under Axial Compression

Cited by 6 publications

References 23 publications

Local Buckling of Steel Plates in Composite Structures under Combined Bending and Compression

Local Buckling of Steel Plates in Composite Structures under Combined Bending and Compression

Structural performance of the concrete-filled tube column with internal triangular units subjected to axial compression

Compressive behavior of double skin composite wall with different plate thicknesses

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