Research on mechanical behaviour of tapered concrete-filled double skin steel tubular members with large hollow ratio subjected to bending

doi:10.1016/j.jcsr.2021.106689

IR > 土木工程学院

	Research on mechanical behaviour of tapered concrete-filled double skin steel tubular members with large hollow ratio subjected to bending
	Wang, Wen-Da1,2 ; Fan, Jia-Hao 1; Shi, Yan-Li1,2 ; Xian, Wei 1
	2021-07
发表期刊	Journal of Constructional Steel Research
ISSN	0143-974X
卷号	182
摘要	This paper reports a study on the mechanical behaviour of tapered concrete-filled double skin steel tubular (CFDST) members under bending. A total of twelve specimens with diverse hollow ratios and shear span ratios were tested. The failure mode, the distribution of the deflection curves, the bending moment-curvature curves (M-φ), the longitudinal stress distribution of the cross-section and the strain were investigated, respectively, to understand the bending performance and working mechanism of the specimens. Meanwhile, the finite element (FE) models of tapered CFDST members were developed to investigate the flexural behaviour by ABAQUS software. Finally, the calculation method for predicting the flexural capacity of tapered CFDST members was proposed. The results show that tapered CFDST specimen fails in a very ductile manner and no tensile fracture is observed at the tension region. The maximum deflection of tapered CFDST members occurs at the 3/4L0 section. Moreover, it is found that the flexural capacity is sensitive to the change of taper angle and hollow ratio due to the variation of flexure stiffness. For instance, ultimate bending capacity can be decreased by 62.6% when the taper angle changes from 0° to 1.71°. In addition, it is not reliable to directly select the minimum section of tapered CFDST members as designed section, which will underestimate the flexural capacity of the specimens. Therefore, the concept of equivalent section is proposed to predict the calculation, and the predicted results are satisfactorily in accordance with the measured results, which can provide certain reference for engineering design. © 2021 Elsevier Ltd
关键词	ABAQUS Behavioral research Finite element method Concrete-filled Double skin Equivalent calculations Experimental study Finite elements analysis Flexural capacity Hollow ratios Mechanical behavior Tapered concrete-filled double skin steel tubular member Tubular members
DOI	10.1016/j.jcsr.2021.106689
收录类别	EI ; 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:000663094000002
出版者	Elsevier Ltd
EI入藏号	20211510212031
EI主题词	Concretes
EI分类号	412 Concrete ; 461.4 Ergonomics and Human Factors Engineering ; 723.5 Computer Applications ; 921 Mathematics ; 921.6 Numerical Methods ; 971 Social Sciences
来源库	WOS
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148443
专题	土木工程学院
通讯作者	Wang, Wen-Da
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 2.Minist Educ, Western Ctr Disaster Mitigat Civil Engn, Lanzhou 730050, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Wang, Wen-Da,Fan, Jia-Hao,Shi, Yan-Li,et al. Research on mechanical behaviour of tapered concrete-filled double skin steel tubular members with large hollow ratio subjected to bending[J]. Journal of Constructional Steel Research,2021,182.
APA	Wang, Wen-Da,Fan, Jia-Hao,Shi, Yan-Li,&Xian, Wei.(2021).Research on mechanical behaviour of tapered concrete-filled double skin steel tubular members with large hollow ratio subjected to bending.Journal of Constructional Steel Research,182.
MLA	Wang, Wen-Da,et al."Research on mechanical behaviour of tapered concrete-filled double skin steel tubular members with large hollow ratio subjected to bending".Journal of Constructional Steel Research 182(2021).