Research on the Bearing Capacity of Concrete-Filled Double-Skin Circular Aluminum Tube Short Columns Under Axial Compression

WANG Lei; WU Yihui; JIANG Mengyao; SHU Qianjin

doi:10.3724/j.gyjzG24050615

Volume 54 Issue 9

Sep. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(9): 149-155

WANG Lei, WU Yihui, JIANG Mengyao, SHU Qianjin. Research on the Bearing Capacity of Concrete-Filled Double-Skin Circular Aluminum Tube Short Columns Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 149-155. doi: 10.3724/j.gyjzG24050615

Citation:

WANG Lei, WU Yihui, JIANG Mengyao, SHU Qianjin. Research on the Bearing Capacity of Concrete-Filled Double-Skin Circular Aluminum Tube Short Columns Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 149-155. doi: 10.3724/j.gyjzG24050615

Citation:

WANG Lei, WU Yihui, JIANG Mengyao, SHU Qianjin. Research on the Bearing Capacity of Concrete-Filled Double-Skin Circular Aluminum Tube Short Columns Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(9): 149-155. doi: 10.3724/j.gyjzG24050615

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Research on the Bearing Capacity of Concrete-Filled Double-Skin Circular Aluminum Tube Short Columns Under Axial Compression

doi: 10.3724/j.gyjzG24050615

1. Linyi Landscape Environmental Sanitation Service Center, Linyi 276000, China;
2. China University of Mining and Technology, Xuzhou 221116, China

Received Date: 2024-05-06
Available Online: 2024-10-18

Abstract

Abstract

Concrete-filled double-skin circular aluminum tube short columns consisting of PVC tube inside and aluminum alloy tube outside was taken as the research object, considering two variables of PVC tube diameter and aluminum tube wall thickness, axial compression test research and corresponding finite element simulation analysis on the concrete-filled double-skin circular aluminum tube short columns were carried out. The failure modes, ultimate bearing capacities and load-strain relation of the concrete-filled double-skin circular aluminum tube short column specimens were obtained. The feasibility of using existing calculation methods for the bearing capacity of steel tube concrete short columns under axial compression to predict the bearing capacity of concrete-filled double-skin circular aluminum tube short columns were compared and analyzed. The research results indicated that the failure mode of concrete-filled double-skin circular aluminum tube short columns exhibited bulging failure. When the diameter of the PVC tube remained constant, the ultimate bearing capacity of the specimen increased by 46.6%-96.6% with the increase of the wall thickness of the aluminum tube. When the thickness of the aluminum tube remained unchanged, the bearing capacity of the specimen decreased by 8.3%-28.4% with the increase of the diameter of the PVC tube. The accuracy of the projected results of the existing European EC 4 code and the United States AISC code for CFST column bearing capacity was affected by the wall thickness of the aluminum tube and the result were too conservative. The predicted data stability of CCES standard for specimens with different wall thicknesses was insufficient. The method proposed by scholar Tao Zhong showed the best predicted results and data stability.Finally, a suggestion was put forward for the calculation of the bearing capacity of concrete-filled double-skin circular aluminum tube short columns under axial compression.
- concrete-filled aluminum tube,
- PVC tube,
- circular aluminum tube,
- axial compression,
- bearing capacity

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References(27)

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