Finite Element Analysis on the Axial Compressive Performance of Square Concrete-Filled Steel Tubular Columns Confined with Multi-Spiral Stirrups

ZHAO Jiaxiang; YANG Kun; SUN Shanshan; WANG Yakun

doi:10.3724/j.gyjzG24101705

Volume 56 Issue 6

Jun. 2026

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ZHAO Jiaxiang, YANG Kun, SUN Shanshan, WANG Yakun. Finite Element Analysis on the Axial Compressive Performance of Square Concrete-Filled Steel Tubular Columns Confined with Multi-Spiral Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 71-81. doi: 10.3724/j.gyjzG24101705

Citation:

ZHAO Jiaxiang, YANG Kun, SUN Shanshan, WANG Yakun. Finite Element Analysis on the Axial Compressive Performance of Square Concrete-Filled Steel Tubular Columns Confined with Multi-Spiral Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 71-81. doi: 10.3724/j.gyjzG24101705

Citation:

ZHAO Jiaxiang, YANG Kun, SUN Shanshan, WANG Yakun. Finite Element Analysis on the Axial Compressive Performance of Square Concrete-Filled Steel Tubular Columns Confined with Multi-Spiral Stirrups[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 71-81. doi: 10.3724/j.gyjzG24101705

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Finite Element Analysis on the Axial Compressive Performance of Square Concrete-Filled Steel Tubular Columns Confined with Multi-Spiral Stirrups

doi: 10.3724/j.gyjzG24101705

School of Civil Engineering, Chang'an University, Xi'an 710061, China

Received Date: 2024-10-17
Available Online: 2026-07-06

Abstract

Abstract

To solve the problem of weak restraint capacity around the cross-section of square concrete-filled steel tubular（CFST） columns， this paper proposes incorporating multi-spiral stirrups inside the steel tube and study the axial compressive performance of this type of square column. Based on the existing experimental research， this study conducted numerical simulation analysis using the finite element software ABAQUS and verified the validity of the established finite element model for square CFST columns confined with multi-spiral stirrups. Based on this method， the finite element model of square CFST columns confined with five-spiral stirrups was established to further study the effects of stirrup spacing， stirrup diameter， stirrup strength， steel tube thickness， concrete strength， and other factors on their axial compressive performance. The results showed that the built-in five-spiral stirrups compensated for the weak restraint capacity of the square steel tube on the concrete in the middle of the periphery of the cross-section， and improved the bearing capacity and ductility of the square CFST column； under the same stirrup ratio by volume， the bearing capacity and ductility coefficient of CFST square columns confined with five-spiral stirrups were significantly higher than those of square CFST columns confined with single-spiral stirrups. In addition， the paper discussed the restraining mechanism of square CFST columns confined with multi-spiral stirrups and adopted the principle of strength superposition to derive the calculation formula for the axial compressive bearing capacity of square CFST columns confined with multi （single）-spiral stirrups.
- concrete-filled steel tubular square column,
- finite element analysis,
- multi-spiral stirrup,
- bearing capacity,
- ductility,
- axial compressive performance

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References(20)

References

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