Analysis on Seismic Performance of Steel-Reinforced Concrete-Filled Circular Steel Tubular (SRCFST) Members Subjected to Post-Fire

doi:10.3390/ma15062294

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	Analysis on Seismic Performance of Steel-Reinforced Concrete-Filled Circular Steel Tubular (SRCFST) Members Subjected to Post-Fire
	Han, Yi 1,2; Bao, Yanhong 3
刊名	Materials
	2022-03-02
卷号	15 期号:6
关键词	Axial compression Columns (structural) Ductility Energy dissipation Energy utilization Fires Musculoskeletal system Reinforced concrete Seismic waves Seismology Steel fibers Axial compression ratio Circular steels Concrete-filled Parameter analysis Post-fire Seismic Performance Slenderness ratios Steel reinforced concrete Steel tube Steel-reinforced concrete-filled circular steel tubular member
DOI	10.3390/ma15062294
英文摘要	Steel-reinforced concrete-filled steel tubular (SRCFST) columns have a great development prospect in engineering practice due to their high load-bearing capacity, good ductility, and energy consumption capacity. This paper established the post-fire seismic analysis model of SRCFST with a circular-cased H section using the sequential coupled thermal-stress method by ABAQUS. The P- curve, stiffness, ductility, and energy dissipation were calculated. Then, the post-fire seismic performance of CFST members was compared while keeping the total steel ratio constant, and it revealed that the SRCFST had superior ductility to CFST. Finally, the ductility coefficient and skeleton curve were parametrically evaluated. The results of the study showed that the effects of heating time (th ), axial compression ratio (n), slenderness ratio (λ), and steel tube ratio (αt ) on the skeleton line of SRCFST columns are more significant; the axial compression ratio (n), slenderness ratio (λ), and steel tube ratio (αt ) have a negative influence on the ductility subjected to post-fire. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000775054900001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157877]
专题	兰州理工大学
作者单位	1.College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou; 730070, China; 2.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Civil Engineering, Qinghai University, Xining; 810016, China
推荐引用方式 GB/T 7714	Han, Yi,Bao, Yanhong. Analysis on Seismic Performance of Steel-Reinforced Concrete-Filled Circular Steel Tubular (SRCFST) Members Subjected to Post-Fire[J]. Materials,2022,15(6).
APA	Han, Yi,&Bao, Yanhong.(2022).Analysis on Seismic Performance of Steel-Reinforced Concrete-Filled Circular Steel Tubular (SRCFST) Members Subjected to Post-Fire.Materials,15(6).
MLA	Han, Yi,et al."Analysis on Seismic Performance of Steel-Reinforced Concrete-Filled Circular Steel Tubular (SRCFST) Members Subjected to Post-Fire".Materials 15.6(2022).