Torsional Behavior of Concrete-Filled Circular Steel Tube Columns

Lee, Eun-Taik; Yun, Boseon; Shim, Hyunju; Chang, Kyong-Ho; Lee, George C.

doi:10.1061/(asce)0733-9445(2009)135:10(1250)

Cited by 41 publications

(12 citation statements)

References 5 publications

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“…The rotational displacement, with respect to the free degree of freedom UR3, was compulsorily increased step-by-step; correspondingly, the torsional moment was computed. Previous studies [28,32,37,39] used different target angles of twist in their analyses and experiments. Absolute angles of twist up to about 20 • were employed in previous studies [32,37,39].…”

Section: Modellingmentioning

confidence: 99%

“…The strain and deformation of CFSTs depend not only the angle of twist, but also the length of the specimens; therefore, the relative angle of twist (angle of twist per unit length) seems to be more general. Lee et al [28] used the relative angle of twist 0.4 rad/m in their analytical study. In this study, the target rotation 0.4 rad/m was adopted.…”

Section: Modellingmentioning

confidence: 99%

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Numerical Study of Circular Concrete Filled Steel Tubes Subjected to Pure Torsion

Cao

2021

Buildings

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This study numerically explored the torsional behavior of circular concrete-filled steel tubes (CFST) under pure torsion. Numerical models of CFSTs were developed in ABAQUS. The models were validated by comparing with the experimental results available in the literature; then, these models were used for parametric study. Based on the obtained results, the mechanism of torsional moment transferring from steel plates to CFST was presented. The results obtained from the parametric study indicated that the compressive strength of concrete marginally improved the torsional moment capacity of the CFST while concrete prevented buckling and helped the steel tubes to work more effectively. The steel strength significantly affected the torsional moment capacity of the CFST. When the yield strength of steel increased from 235 to 420 MPa, the yield torsional moment of the CFST increased by approximately 50%. The yield torsional moment capacity of the steel tube had the strongest correlation with the yield moment of the CFST, followed by the ratio of diameter to thickness of the steel tube while the parameters related to the compressive strength of concrete exhibited a poor correlation with the yield torsional moment.

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Section: Modellingmentioning

confidence: 99%

Section: Modellingmentioning

confidence: 99%

Numerical Study of Circular Concrete Filled Steel Tubes Subjected to Pure Torsion

Cao

2021

Buildings

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“…CFST columns have been applicable for a variety of structural applications. For example, CFST columns have been used for resistance to seismic activities (Lee et al, 2009) and in tall buildings such as the Commerzbank in Frankfurt, Germany (Uy, 1998). In practical application, holes have been provided at strategic locations in steel tubes allowing for concrete to be cast in segments.…”

Section: Past Research On Cfst Columnsmentioning

confidence: 99%

Axial load behaviour of steel tube columns in-filled with various high performance concretes

Chu¹

2021

Preprint

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This research concentrates on the axial load behaviour of circular, square and rectangular concrete filled steel tube (CFST) columns incorporating high-performance self-consolidating concretes such as ultra-high strength concrete (UHSC), engineered cementitious composite (ECC), lightweight concrete (LWC), and crumb rubber concrete (CRC). Seventy-four CFST specimens with varying slenderness, shape, concrete type and presence of internal bar reinforcements are tested experimentally under axial compression loading. The effect of these variables on axial load-deformation response, strain characteristics, failure modes, concrete confinement and axial strength are evaluated through experimental results. Performance of existing analytical/code based models for axial strength and concrete confined strength is evaluated. Concretes without coarse aggregates including UHSC proved less effective at enhancing axial strength of filled tube columns through confinement. In contrast, confinement in filled steel tube columns was found most effective with the use of concretes with coarse aggregates such as LWC and CRC.

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“…Han et al (2007) have used the finite element method to study the torsion behavior of CFST columns, and then the simplified design method was proposed by the regression analysis. Lee et al (2009) have investigated the behavior of CFST columns under pure static torsion, and a theoretical model was also proposed with good agreement. From the literatures mentioned above, it can be found that the literatures available about the torsion behavior of CFST columns mainly focused on the static behavior of CFST columns subjected to torsion, and the combined flexure and torsion effect were less considered.…”

Section: Introductionmentioning

confidence: 99%

Test on Torsion Behavior of CFST Columns Subjected to Complex Load

Wang¹,

Nie²,

Fan³

2013

Structures Congress 2013

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The quasi-static test on six CFST columns under combined compression, bending and torsion cyclic load condition were carried out in order to study the mechanical behavior of CFST columns with various section types, bending moment to torsion moment ratios and axial load levels. The test results showed that the hysteretic curves of CFST columns under combined compression, flexure and torsion are plump due to the good seismic behavior and the ductility was also good. But for rectangular CFST columns with high bending moment to torsion moment ratio, the strength degradation was observed due to the local buckling of the steel plate at the bottom. The torsion capacity of CFST columns would be reduced by the bending moment. The plane section assumption of axial strain of CFST columns could be satisfied. The shear strain of the steel tube has good linear relationship with the rotation angle of the section when CFST columns subjected to combined compression, flexure and torsion. Based on the test results and literatures available, the mechanism of CFST columns was qualitatively analyzed.

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Torsional Behavior of Concrete-Filled Circular Steel Tube Columns

Cited by 41 publications

References 5 publications

Numerical Study of Circular Concrete Filled Steel Tubes Subjected to Pure Torsion

Numerical Study of Circular Concrete Filled Steel Tubes Subjected to Pure Torsion

Axial load behaviour of steel tube columns in-filled with various high performance concretes

Test on Torsion Behavior of CFST Columns Subjected to Complex Load

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