Anti-collapse performance of concrete-filled steel tubular composite frame with assembled tensile steel brace under middle column removal

doi:10.1016/j.engstruct.2022.114635

IR > 土木工程学院

	Anti-collapse performance of concrete-filled steel tubular composite frame with assembled tensile steel brace under middle column removal
	Wang, Jing-Xuan1 ; Shen, Ya-Jun 1; Gao, Shan 2; Wang, Wen-Da1
	2022-09-01
发表期刊	Engineering Structures
ISSN	0141-0296
卷号	266
摘要	To study the effect of assembled tensile steel brace on the progressive collapse resistance of concrete-filled steel tubular (CFST) structures, two 1/4-scaled two-bay two-story composite frames with CFST columns and profiled steel–concrete composite beams were tested pseudo-statically under a middle column removal scenario. The vertical load–displacement responses and failure modes of two specimens were analyzed. Especially, the effects of assembled tensile steel braces on the anti-collapse performance of the frames were discussed. Experimental results show that the assembled tensile steel braces delayed the failure of the upper beam and significantly improved the structural bearing capacity and ductility of the frame. The horizontal reaction forces of the specimens are compressive forces due to the compressive arch action in the initial loading stage, and they change from compression to tension due to the catenary action. Numerical parametric analysis indicates that the splint bolt connection configuration can effectively improve the bearing capacity of the frame models by increasing the bolt preload and friction coefficient. Furthermore, the collapse resistance of the structure is calculated based on the simplified elastic theory method, considering the effect of the steel braces. It is believed that the assembled tensile brace between CFST columns could be used as a reinforcement method to improve the collapse resistance of the framed structure. © 2022 Elsevier Ltd
关键词	Arches Failure (mechanical) Friction Joints (structural components) Overhead lines Reinforced concrete Structural frames Tubular steel structures Catenary actions Collapse resistance Composite frame Concrete-filled steel tubular Concretefilled steel tubes (CFST) Performance Progressive collapse Steel braces Tensile steel brace Tensile steels
DOI	10.1016/j.engstruct.2022.114635
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Civil
WOS记录号	WOS:000852773000002
出版者	Elsevier Ltd
EI入藏号	20223012397177
EI主题词	Bearing capacity
EI分类号	408.2 Structural Members and Shapes - 412 Concrete - 545.3 Steel - 706.2 Electric Power Lines and Equipment
来源库	WOS
引用统计	被引频次：6[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/159427
专题	土木工程学院
通讯作者	Gao, Shan
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 2.Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China
第一作者单位	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, Jing-Xuan,Shen, Ya-Jun,Gao, Shan,et al. Anti-collapse performance of concrete-filled steel tubular composite frame with assembled tensile steel brace under middle column removal[J]. Engineering Structures,2022,266.
APA	Wang, Jing-Xuan,Shen, Ya-Jun,Gao, Shan,&Wang, Wen-Da.(2022).Anti-collapse performance of concrete-filled steel tubular composite frame with assembled tensile steel brace under middle column removal.Engineering Structures,266.
MLA	Wang, Jing-Xuan,et al."Anti-collapse performance of concrete-filled steel tubular composite frame with assembled tensile steel brace under middle column removal".Engineering Structures 266(2022).