Experimental study and design method of interactive buckling of 6063-T5 aluminum alloy square tube under axial and eccentric compression

被引：0
作者：
Liu, Xue Chun [1 ]
Wang, Sen Ping [1 ]
Chen, Xuesen [1 ]
Jia, Sui Zi [2 ]
机构：
[1] Beijing Univ Technol, Beijing Engn Res Ctr High rise & Large span Prestr, Beijing 100124, Peoples R China
[2] China Univ Geosci Beijing, Sch Engn & Technol, Beijing 100083, Peoples R China
来源：
THIN-WALLED STRUCTURES | 2025年 / 210卷
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
Aluminum alloy; Interactive buckling; Tubular column; Slenderness ratio; Width-to-thickness ratio; COLUMNS; SECTIONS; STRENGTH;
D O I：
10.1016/j.tws.2025.112976
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The interactive buckling behavior of aluminum alloy square tubes, characterized by low density and excellent corrosion resistance, under axial and eccentric compression was comprehensively investigated. Eleven 6063-T5 thin-walled aluminum alloy square tubular column specimens with different lengths, widths, and thicknesses were designed to undergo axial and eccentric compression tests. Subsequently, the failure modes and buckling resistances were analyzed. Finite element models, validated by the experimental results, were employed for parameter analysis to further investigate the effects of slenderness ratio, width-to-thickness ratio, and eccentricity on interactive buckling resistance. As the slenderness ratio increases, the influence of local buckling on the resistances decreases, and the specimen suffers overall buckling before the local buckling. Through a comparative analysis of the design methods for aluminum alloy structures in the Chinese code, the Eurocode, and the American code, it was found that the Chinese code and the Eurocode yield relatively conservative results, while the method in the American code overestimates the interactive buckling resistance of components. Based on the above codes, the design formulas for axial and eccentric interactive buckling resistance were modified to more precisely predict the buckling resistance of aluminum alloy square tubes considering interactive buckling effects.
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页数：20
相关论文
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