Research on special-shaped concrete-filled steel tubular columns under axial compression

Liu, Xianggang; Xu, Chuangze; Liu, Jiepeng; Yang, Haitian

doi:10.1016/j.jcsr.2018.04.014

Cited by 110 publications

(30 citation statements)

References 25 publications

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“…e steel column of traditional residential buildings is commonly a regular section. In this case, the column may protrude from the wall and affect the building's function [13]. Scholars have developed many different forms of special-shaped CFST (SS-CFST) columns to prevent this, including the SS-CFST column, the SS-CFST column with binding bars, with stiffener ribs, or connected by steel plates, and the multicell SS-CFST column, as shown in Figure 1, which can be embedded in the wall to avoid protrusions [14].…”

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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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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“…Ding et al [5] investigated the behavior of steelreinforced concrete-filled square steel tubular stub columns. Liew et al [6,7,9,[22][23][24] found that adding steel tubular in the concrete-filled steel tubular column can not only improve the fire resistance of the concrete-filled steel tubular column but also improve the bearing capacity and ductility of the column. Tao et al [10,[25][26][27][28] found that the longitudinal stiffening ribs were an effective method to improve the mechanical properties of thin-walled concrete-filled square steel tubular members.…”

Section: Introductionmentioning

confidence: 99%

Behavior of an Innovative Square Composite Column Made of Four Steel Tubes at the Corners and Corrugated Steel Batten Plates on all Sides

Wang

Zou

Kang

et al. 2019

Advances in Civil Engineering

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Steel-concrete composite (SCC) columns have widely been applied in modern construction industry owing to the composite action between the concrete and the steel. The benefits of SCC columns can be further achieved if the confinement effect of concrete is applied. Therefore, this paper presents an innovative square steel-concrete composite (ISSCC) column made of four steel tubes at the corners and corrugated steel batten plates on all sides. Through the experimental and finite element (FE) numerical simulation calculations, the axial compression performance and seismic performance of the ISSCC column were discussed, and the FE model was verified through experimental results. The seismic performance of the ISSCC column was compared and analyzed with reinforced concrete column under different axial compression ratios. The research showed that FE models can accurately simulate the deformation, stress, and failure states of the ISSCC column under axial pressure and horizontal low cyclic load. Furthermore, the ISSCC column performed good ductility and energy dissipation capacity, and the seismic performance index was better than the reinforced concrete column and had better seismic performance. The results of this study can provide reference for the design and development of the new composite column.

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“…They also derived the change of the force-moment interaction diagrams of this type of columns against different parameters and presented some relationships for calculation of the maximum bearing capacity of CFST column. Liu et al [38] studied the CFST columns with different cross-sections under axial load using a laboratory and a finite element method. Their investigation presented that CFST columns with a T-shaped cross-section are more efficient than CFST columns with an L-section.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Comparison between Spiral Transverse RC and CFST Columns under Loads of Varying Eccentricities

Labibzadeh

Jamalpour

Jing

et al. 2019

Period. Polytech. Civil Eng.

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This paper is the first to present the results of a numerical comparison between the performances of two newly developed concrete columns namely: multi-tied spiral transverse reinforced (MTSTR) column and concrete-filled steel tube (CFST) column under eccentric compressive loads. The behavior of MTSTR columns under eccentric loads has not been studied until today and also this behavior is not compared to that of the CFST columns. The numerical models of these columns were constructed using the nonlinear finite element method and validated against the previously published experimental data in the literature. Concrete damage plasticity model and elastic-perfect plastic model were used to simulate the behavior of concrete core and steel of the columns, respectively. This provides the capability of modeling of the nonlinear large deformations of the columns. The obtained results show that the MTSTR columns can provide greater load carrying capacity, ductility, and energy absorption with slightly lower initial stiffness than the CFST columns under the same eccentricities. For instance, the load-carrying capacity of MTSTR column is 18 percent greater than that of the CFST column when the load eccentricity is 100 mm. In case of 100 mm eccentricity, the ductility of the improved version of the MTSTR column proposed in this study is 30 percent greater than CFST one.

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Research on special-shaped concrete-filled steel tubular columns under axial compression

Cited by 110 publications

References 25 publications

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

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

Behavior of an Innovative Square Composite Column Made of Four Steel Tubes at the Corners and Corrugated Steel Batten Plates on all Sides

A Numerical Comparison between Spiral Transverse RC and CFST Columns under Loads of Varying Eccentricities

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