Shear response of circular-in-square CFDST members: Experimental investigation and finite element analysis

doi:10.1016/j.jcsr.2022.107160

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	Shear response of circular-in-square CFDST members: Experimental investigation and finite element analysis
	Duan, Li-Xin 1; Wang, Wen-Da 1,2; Xian, Wei 1,2; Shi, Yan-Li 1,2
刊名	Journal of Constructional Steel Research
	2022-03-01
卷号	190
关键词	ABAQUS Concretes Finite element method Shear strain Steel testing Tubular steel structures Verification Concrete-filled Concrete-filled double skin steel tube Concrete-filled double-skin steel tube Experimental investigations Finite element analyse Hollow ratios Shear capacity Shear loads Shear response Shear span ratio
ISSN号	0143-974X
DOI	10.1016/j.jcsr.2022.107160
英文摘要	This paper firstly presented an experimental work of circular-in-square concrete-filled double-skin steel tubular (CFDST) members under lateral shear load. Sixteen circular-in-square CFDST specimens and four concrete-filled steel tubular (CFST) specimens were fabricated and tested. Crucial design parameters considered in this test including shear-span ratio (m = 0.4, 0.6, 0.8 and 1.0) and hollow ratio (χ = 0.46, 0.59, 0.67 and 0.82) were studied and discussed. The load-displacement curve (P-Δ), shear strain-load curve (γ-P), and failure mode of the tests were analyzed in detail. The testing results show that as the shear-span ratio increases, the shear capacity drops significantly with the change of failure modes from brittle shear failure to ductile bending failure. The hollow ratio is of primary importance in the study of shear strength for CFDST specimens. When m is 0.4–0.8, specimens with a larger the hollow ratio experience a lower shear capacity, and however when m = 1.0, specimens with larger the hollow ratio exhibit a higher shear capacity. Furthermore, using experimental work presented in this study as a basis for model verification, corresponding finite element model was developed to further explore the mechanical properties of CFDST specimens subjected to shear load via using software ABAQUS. Finally, the expression was proposed for predicting the shear capacity of circular-in-square CFDST specimens, in which both the shear-span ratio and hollow ratio were considered. It can be found that the predictions are very compatible to the testing results from this study. © 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:000760888800002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157916]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Duan, Li-Xin,Wang, Wen-Da,Xian, Wei,et al. Shear response of circular-in-square CFDST members: Experimental investigation and finite element analysis[J]. Journal of Constructional Steel Research,2022,190.
APA	Duan, Li-Xin,Wang, Wen-Da,Xian, Wei,&Shi, Yan-Li.(2022).Shear response of circular-in-square CFDST members: Experimental investigation and finite element analysis.Journal of Constructional Steel Research,190.
MLA	Duan, Li-Xin,et al."Shear response of circular-in-square CFDST members: Experimental investigation and finite element analysis".Journal of Constructional Steel Research 190(2022).