Axial compressive behaviour of tapered CFDST stub columns with large void ratio

doi:10.1016/j.jcsr.2022.107206

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Axial compressive behaviour of tapered CFDST stub columns with large void ratio
	Shi, Yan-Li; Ji, Sun-Hang; Wang, Wen-Da; Xian, Wei; Fan, Jia-Hao
刊名	Journal of Constructional Steel Research
	2022-04-01
卷号	191
关键词	Columns (structural) Concretes Finite element method Concrete-filled double skin steel tube Diameter-to-thickness ratios Finite element analyse Steel tube Steel tube column Stub columns Tapered stub column Ultimate capacity Voids ratio
ISSN号	0143-974X
DOI	10.1016/j.jcsr.2022.107206
英文摘要	An experimental and numerical investigation on tapered concrete-filled double skin steel tubular (CFDST) stub columns with large void ratio under axial compression is presented in this paper. Twelve tapered CFDST specimens with different parameters, namely the void ratio and the diameter-to-thickness ratio of outer steel tube, are tested. The load versus deformation curves, failure modes, effects of different parameters are studied, respectively. It is found that tapered CFDST specimens with large void ratio experience the strength failure, and severely outward buckling occurs near the column top. The diameter-to-thickness ratio of outer steel tube and the void ratio engender a significant influence on the ultimate capacity and ductility of tapered CFDST columns. A finite element (FE) model is developed to predict test results, and to further analyze the working mechanism of tapered columns. The result shows that changing the tapered angle and void ratio has distinct effects on the position of failure section and distribution of peak load of tapered columns. A method considering the influence of failure section is finally proposed for calculating the ultimate capacity of tapered CFDST columns and a good predicted result is presented. © 2022 Elsevier Ltd
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000807626500002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158031]
专题	土木工程学院
作者单位	School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Shi, Yan-Li,Ji, Sun-Hang,Wang, Wen-Da,et al. Axial compressive behaviour of tapered CFDST stub columns with large void ratio[J]. Journal of Constructional Steel Research,2022,191.
APA	Shi, Yan-Li,Ji, Sun-Hang,Wang, Wen-Da,Xian, Wei,&Fan, Jia-Hao.(2022).Axial compressive behaviour of tapered CFDST stub columns with large void ratio.Journal of Constructional Steel Research,191.
MLA	Shi, Yan-Li,et al."Axial compressive behaviour of tapered CFDST stub columns with large void ratio".Journal of Constructional Steel Research 191(2022).