Finite Element Analysis and Bearing Capacity Calculation of Combined Cruciform CFST Columns

CHEN Peng; SUN Shu

doi:10.13204/j.gyjzG21022307

Volume 53 Issue 5

May 2023

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CHEN Peng, SUN Shu. Finite Element Analysis and Bearing Capacity Calculation of Combined Cruciform CFST Columns[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 35-40,117. doi: 10.13204/j.gyjzG21022307

Citation:

CHEN Peng, SUN Shu. Finite Element Analysis and Bearing Capacity Calculation of Combined Cruciform CFST Columns[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 35-40,117. doi: 10.13204/j.gyjzG21022307

CHEN Peng, SUN Shu. Finite Element Analysis and Bearing Capacity Calculation of Combined Cruciform CFST Columns[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 35-40,117. doi: 10.13204/j.gyjzG21022307

Citation:

CHEN Peng, SUN Shu. Finite Element Analysis and Bearing Capacity Calculation of Combined Cruciform CFST Columns[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 35-40,117. doi: 10.13204/j.gyjzG21022307

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Finite Element Analysis and Bearing Capacity Calculation of Combined Cruciform CFST Columns

doi: 10.13204/j.gyjzG21022307

CHEN Peng,
SUN Shu^,

Institute of Civil Engineering, Taizhou Polytechnic College, Taizhou 225300, China

Received Date: 2021-02-23

Abstract

Abstract

In order to study the bearing performance (axial compression, eccentric compression) and bearing capacity calculation method of composite cross shaped concrete-filled steel tubular column, the expansion analysis of 26 specimens was carried out by using the finite element software ABAQUS, combined with the measured data of 6 specimens, and taking the eccentricity, slenderness ratio, section steel ratio, concrete strength grade and steel yield strength as changing parameters. The influence of various influencing parameters on the bearing capacity of composite cross shaped concrete-filled steel tubular columns was discussed. The calculation methods of ultimate bearing capacity of axial compression columns and eccentric compression columns of composite cross shaped concrete-filled steel tubular columns were studied respectively, and practical design formulas were put forward. The results showed that the ultimate bearing capacity of composite cross shaped concrete-filled steel tubular columns decreased with the increase of eccentricity and slenderness ratio, and cncreased with the increase of steel ratio, concrete strength and steel yield strength. When the eccentricity and concrete strength were small, the bearing capacity degenerated rapidly, the bearing capacity increased nearly linearly with the increase of steel content, and the improvement of channel steel strength could improve the bearing capacity of the specimen. The calculation method of ultimate bearing capacity of composite cross shaped concrete-filled steel tubular (axial pressure and eccentric pressure) based on confined concrete theory had good applicability.
- combined cruciform CFST column,
- eccentric compression,
- axial compression,
- finite element,
- bearing capacity calculation

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References(5)

References

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