Experimental and Numerical Studies on Axially-loaded Mechanical Properties of Tuned-Mass Type Composite Columns

FANG Xiaojun; LI Junxi; ZHOU Yun; SONG Jian

doi:10.3724/j.gyjzG24091401

Volume 55 Issue 2

Feb. 2025

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(2): 177-186

FANG Xiaojun, LI Junxi, ZHOU Yun, SONG Jian. Experimental and Numerical Studies on Axially-loaded Mechanical Properties of Tuned-Mass Type Composite Columns[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(2): 177-186. doi: 10.3724/j.gyjzG24091401

Citation:

FANG Xiaojun, LI Junxi, ZHOU Yun, SONG Jian. Experimental and Numerical Studies on Axially-loaded Mechanical Properties of Tuned-Mass Type Composite Columns[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(2): 177-186. doi: 10.3724/j.gyjzG24091401

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Experimental and Numerical Studies on Axially-loaded Mechanical Properties of Tuned-Mass Type Composite Columns

doi: 10.3724/j.gyjzG24091401

FANG Xiaojun^1,2,3,
LI Junxi²,
ZHOU Yun^{2
,
,},
SONG Jian³

1. Earthquake Engineering Research & Test Center, Guangzhou University, Guangzhou 510006, China;
2. School of Civil Engineering, Guangzhou University, Guangzhou 510006, China;
3. Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong 999077, China

Received Date: 2024-09-14
Available Online: 2025-04-02

Abstract

Abstract

In order to investigate the axially-loaded mechanical properties of the tuned-mass type composite columns (TMTCCs), 7 groups (each group had 2 specimens) of TMTCC specimens were designed and prepared, and experimental and numerical studies were conducted in the paper. The influences of length-to-diameter ratio and diameter-to-thickness ratio on its bearing capacity were studied as well. Moreover, according to the Technical Code for Concrete Filled Steel Tubular Structures (GB 50936—2014) and Technical Specification for Concrete-Filled Double Skin Steel Tubular structures (T/CCES 7—2020), the prediction formula of the ultimate axial load-bearing capacity of TMTCC under axial compression was developed and verified by experimental and numerical results. The results showed that the ultimate bearing capacity of TMTCC specimens under axial compression tended to decrease with the increase of length-to-diameter ratio and diameter-to-thickness ratio. By adopting the springs and dashpots, the internal and external columns of TMTCC could work together to bear the vertical loading and hence effectively prevented the sliding, tilting and global buckling of the internal column. The obtained numerical and predicted results were in good agreements with the experimental results, which can be used for the analysis and design of TMTCC.
- tuned-mass type composite column,
- spring/dashpot,
- axially-loaded mechanical properties,
- numerical simulation,
- formula of ultimate bearing capacity

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References

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