Performance of rectangular SRCFST stub columns under long-term loading and preload on steel tube

doi:10.1016/j.istruc.2024.106110

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	Performance of rectangular SRCFST stub columns under long-term loading and preload on steel tube
	Wu, Xiao-Ming 1; Shi, Yan-Li1,2 ; Zheng, Long1,2 ; Wang, Wen-Da1,2
	2024-03
发表期刊	Structures
卷号	61
摘要	The performance of rectangular steel-reinforced concrete-filled steel tubular (SRCFST) stub columns throughout their whole life cycle should be studied since the steel tube bears initial stress during the construction stage and the full-section endures long-term axial loading during the service stage. A total of 7 SRCFST specimens were designed for a 1200-day sustained load test. Subsequently, axial compressive loading tests were conducted. The influence of the preload ratio (β) and the long-term sustained load ratio (n) on the initial strain values, creep behavior, failure modes, and load-deformation curves were studied. Besides, finite element simulations were conducted to analyze the internal force redistribution during the sustained load stage and the load-bearing behavior of various components in the load-bearing tests. The results indicated that considering the combined effects of different loading conditions influenced the failure modes and mechanical behavior of the specimens. When considering the combined effects of initial stress and long-term loading, the ultimate load-bearing capacity exhibited the most significant improvement, with a maximum increase of 13.4% compared with the long-term comparison specimens. © 2024 Institution of Structural Engineers
关键词	Columns (structural) Creep Life cycle Load testing Loads (forces) Reinforced concrete Stress analysis Axial compressive test Compressive tests Creep behaviors Load ratio Long-term sustained load ratio Preload ratio Reinforced concrete filled steel tubular columns Steel reinforced concrete Steel-reinforced concrete-filled steel tubular column Sustained loads
DOI	10.1016/j.istruc.2024.106110
收录类别	EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20241015672590
EI主题词	Tubular steel structures
EI分类号	408 Structural Design ; 408.2 Structural Members and Shapes ; 412 Concrete ; 545.3 Steel ; 951 Materials Science
原始文献类型	Journal article (JA)
EISSN	2352-0124
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/169975
专题	土木工程学院
通讯作者	Shi, Yan-Li
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 University of Technology, Lanzhou; 730050, China
第一作者单位	土木工程学院
通讯作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Wu, Xiao-Ming,Shi, Yan-Li,Zheng, Long,et al. Performance of rectangular SRCFST stub columns under long-term loading and preload on steel tube[J]. Structures,2024,61.
APA	Wu, Xiao-Ming,Shi, Yan-Li,Zheng, Long,&Wang, Wen-Da.(2024).Performance of rectangular SRCFST stub columns under long-term loading and preload on steel tube.Structures,61.
MLA	Wu, Xiao-Ming,et al."Performance of rectangular SRCFST stub columns under long-term loading and preload on steel tube".Structures 61(2024).