Torsional behaviour of tapered CFDST members with large void ratio

doi:10.1016/j.jobe.2022.104434

IR > 土木工程学院

	Torsional behaviour of tapered CFDST members with large void ratio
	Fan, Jia-Hao 1; Wang, Wen-Da1,2 ; Shi, Yan-Li1,2 ; Ji, Sun-Hang 1
	2022-07-15
发表期刊	Journal of Building Engineering
卷号	52
摘要	This paper investigated the mechanical behaviour of tapered concrete-filled double skin steel tubular (CFDST) members under combined axial compression and torsion. A series of experiments on CFDST specimens were tested including 8 tapered members and 2 normal members with various hollow ratios and axial compression ratios. The torsional performance of tapered members was analyzed on failure modes, torque-rotation angle curves, and torque-shear strain curves. Verified FE models were developed to carry out the full-range analysis, stress and strain distribution, and the contact stresses between the components. The results showed that the failure mode of tapered CFDST columns was the torsional deformation occurred between 0.5H and the top section. The specimens with a high axial compression ratio occurred additionally inclined outward buckling at 0.8H section, giving rise to a decline in torsional capacity. A low level of axial force promotes the torsional bearing capacity. The effects of the taper angle and hollow ratio on the distribution of shear strain and the torsional capacity at different heights are obvious. Furthermore, employing the section with the lowest torsional modulus for tapered CFDST members is conservative as the designed section, because the torsional capacity might be underestimated. Finally, a simplified method defined by a new calculated section for forecasting the torsional performance of tapered CFDST members is proposed. © 2022 Elsevier Ltd
关键词	Axial compression Concretes Failure modes Shear flow Shear strain Stress-strain curves Tubular steel structures Concrete-filled Concrete-filled double skin steel tubular Double skin Equivalent calculations Finite element analyse Hollow ratios Performance Tapered member Torsional behaviors Torsional performance
DOI	10.1016/j.jobe.2022.104434
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:000807453600003
出版者	Elsevier Ltd
EI入藏号	20221411911157
EI主题词	Finite element method
EI分类号	408.2 Structural Members and Shapes ; 412 Concrete ; 545.3 Steel ; 631.1 Fluid Flow, General ; 921.6 Numerical Methods ; 931.1 Mechanics
来源库	WOS
引用统计	被引频次[WOS]：0 [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/158036
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.Lanzhou Univ Technol, Western Ctr Disaster Mitigat Civil Engn, Minist Educ, 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	Fan, Jia-Hao,Wang, Wen-Da,Shi, Yan-Li,et al. Torsional behaviour of tapered CFDST members with large void ratio[J]. Journal of Building Engineering,2022,52.
APA	Fan, Jia-Hao,Wang, Wen-Da,Shi, Yan-Li,&Ji, Sun-Hang.(2022).Torsional behaviour of tapered CFDST members with large void ratio.Journal of Building Engineering,52.
MLA	Fan, Jia-Hao,et al."Torsional behaviour of tapered CFDST members with large void ratio".Journal of Building Engineering 52(2022).