Finite Element Analysis of Axial Compression Behavior of L-Shaped Concrete-Filled Steel Tubular Columns with Different Combinations

doi:10.3390/buildings14030730

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	Finite Element Analysis of Axial Compression Behavior of L-Shaped Concrete-Filled Steel Tubular Columns with Different Combinations
	Li, Hexiao 1,2,3; Tao, Zhong 1,3; Han, Dongji 1,4
	2024-03
发表期刊	BUILDINGS
卷号	14 期号:3
摘要	L-shaped concrete-filled steel tubular (CFST) columns, a kind of structural member appropriate for high-rise buildings, not only avoid the defect of conventional square columns protruding from the wall but also have the green and low-carbon properties of steel structures appropriate for fabricated construction. To learn more about their axial compression behavior, refined 3D finite element models were established using the general finite element software ABAQUS. The reliability of the models was subsequently verified based on failure tests and load-displacement relation tests on eight L-shaped specimens. The axial compression mechanism of L-shaped CFST columns was investigated using the verified finite element models. Further systematic parameter analysis was carried out to investigate the influence of parameters such as steel strength, concrete strength, length ratio of long limb to short limb, the angle between the two limbs, and combination methods on the axial compression behavior of L-shaped CFST columns. The results demonstrate that the angle between the two limbs has a significant impact on the stress distribution of concrete and steel pipes. The corner effect increases as the angle between the two limbs decreases. The combination of F-type specimens can better exert the constraint effect of steel pipes on concrete, while the triangular cavity of unequal-limb specimens and specimens with an included angle of 60 degrees cannot effectively trigger the interaction between steel pipes and concrete. The initial stiffness of L-shaped CFST columns increases with an increase in concrete strength and a decrease in limb length ratio, which is not sensitive to changes in steel strength and the included angle. The peak bearing capacity of the specimens increases with increases in steel strength and concrete strength and a decrease in the limb length ratio. Compared to C-type and Z-type specimens, the initial stiffness of F-type specimens is slightly higher, and the peak bearing capacity is significantly increased.
关键词	L-shaped concrete-filled steel tubular column axial compression behavior finite element analysis combination method
其他关键词	SEISMIC BEHAVIOR ; ENERGY ; CARBON
DOI	10.3390/buildings14030730
收录类别	SCIE
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS记录号	WOS:001191700800001
出版者	MDPI
原始文献类型	Article
EISSN	2075-5309
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/169769
专题	国家开放大学
通讯作者	Tao, Zhong
作者单位	1.Kunming Univ Sci & Technol, Fac Civil Engn & Mech, Kunming 650500, Peoples R China; 2.Yunnan Open Univ, Coll Urban Construct, Kunming 650223, Peoples R China; 3.Yunnan Earthquake Engn Res Inst, Kunming 650000, Peoples R China; 4.3rd Construct Co Ltd, China Construct Engn Bur 5, Changsha 410004, Peoples R China
推荐引用方式 GB/T 7714	Li, Hexiao,Tao, Zhong,Han, Dongji. Finite Element Analysis of Axial Compression Behavior of L-Shaped Concrete-Filled Steel Tubular Columns with Different Combinations[J]. BUILDINGS,2024,14(3).
APA	Li, Hexiao,Tao, Zhong,&Han, Dongji.(2024).Finite Element Analysis of Axial Compression Behavior of L-Shaped Concrete-Filled Steel Tubular Columns with Different Combinations.BUILDINGS,14(3).
MLA	Li, Hexiao,et al."Finite Element Analysis of Axial Compression Behavior of L-Shaped Concrete-Filled Steel Tubular Columns with Different Combinations".BUILDINGS 14.3(2024).