Mechanical Properties of Rolled-Steel Special-Shaped Short Composite Columns with Different Structural Forms Under Axial Compression

LIU Jie; ZHANG Zeyu; WANG Yuedong; CHEN Zhihua; WANG Xiaofeng

doi:10.3724/j.gyjzG23110607

Volume 54 Issue 8

Aug. 2024

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LIU Jie, ZHANG Zeyu, WANG Yuedong, CHEN Zhihua, WANG Xiaofeng. Mechanical Properties of Rolled-Steel Special-Shaped Short Composite Columns with Different Structural Forms Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(8): 87-95. doi: 10.3724/j.gyjzG23110607

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Mechanical Properties of Rolled-Steel Special-Shaped Short Composite Columns with Different Structural Forms Under Axial Compression

doi: 10.3724/j.gyjzG23110607

1. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
2. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China;
3. National Steel Structure Engineering Technology Research Center, Beijing 100088, China

Received Date: 2023-11-06
Available Online: 2024-09-19

Abstract

Abstract

The mechanical properties of short composite columns composed of rolled-steel special-shaped profiles under various structural forms and subject to axial compression were investigated. Numerical simulations were conducted by using the ABAQUS finite element software, focusing on rolled-steel special-shaped short composite columns with and without concrete. The accuracy of the modeling approach was corroborated by comparing with existing experimental results, thus establishing the finite element models of the short composite columns. The analysis uncovered the load-bearing performance, failure mode, and force mechanism of the composite columns under axial compression. Furthermore, it explored the effects of different structural forms and the presence or absence of concrete on the axial compressive properties. Findings indicated that all composite columns underwent a complete compression failure, which was accompanied by local buckling failure of steel tubes. The inclusion of concrete clearly ameliorated the failure mode of composite columns and enhanced the bearing capacity. However, the bearing capacity of pure H-steel composite columns improved significantly upon the formation of a closed section by sealing plates. Existing standards and codes were employed to compute the bearing capacity of the short composite columns. The relative difference between the calculated and simulated values was less than 11%, indicating a good agreement. Therefore, these calculated methods can be reliably used to predict the bearing capacity of rolled-steel special-shaped short composite columns under axial compression.
- rolled-steel special-shaped composite columns,
- axial compressive mechanical property,
- finite element model,
- bearing capacity calculation

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References(23)

References

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