Study on hysteretic behavior of tapered concrete-filled double skin steel tubular beam-columns with large hollow ratio

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Study on hysteretic behavior of tapered concrete-filled double skin steel tubular beam-columns with large hollow ratio
	Shi, Yanli; Ji, Sunhang; Wang, Wenda; Zhang, Chen; Fan, Jiahao
刊名	Tumu Gongcheng Xuebao/China Civil Engineering Journal
	2022
卷号	55 期号:1 页码:75-88
关键词	Axial compression Concrete beams and girders Cyclic loads Damping Ductility Energy dissipation Stiffness Tubular steel structures Beam-columns Concrete-filled Concrete-filled double skin steel tube Double skin Experimental study Hollow ratios Hysteretic behaviour Large hollow ratio Monotonic loading Tapered concrete-filled double skin steel tube
ISSN号	1000-131X
英文摘要	To study the hysteretic behavior of tapered concrete-filled double skin steel tubular(CFDST) beam-columns with large hollow ratio, a total of ten tapered CFDST specimens, including eight cyclic loading specimens and two monotonic loading specimens, were tested.The influence of hollow ratio(0.6 and 0.8) and axial compression ratio(0, 0.2, 0.4 and 0.6) on the failure modes, the P-Δ relationship curves and hysteresis performance of specimens were investigated, respectively.A numerical model for the specimens under monotonic loading was also established to analyze the working mechanism of the beam-columns.Finally, the simplified calculation method for the lateral bearing capacity of tapered CFDST beam-columns was discussed.The test results show that the damage patterns of the specimens with different hollow ratio are basically same, and local damage with different extents was observed at the lower part of the specimens.The P-Δ curves of specimens under the cyclic loading are relatively full, showing a good seismic performance of tested specimens.The hollow ratio(0.6 and 0.8) has little effect on the lateral capacity and ductility, and the peak load of two specimens with different hollow ratio differs by about 3% on average.As the axial compression ratio increases, the ultimate load decreases and the ductility gradually deteriorates.The strength degradation of all cyclic loading specimens is slight, but a more significant stiffness degradation occurs for the specimen with a hollow ratio of 0.8.The average displacement ductility coefficient of the tested specimens is 3.56 while the average value of the viscous damping coefficient is 0.322, which shows that the CFDST specimens better energy dissipation behavior.When the hollow ratio incease from 0.6 to 0.8, the viscous damping coefficient of the specimens increases by 15% on average. © 2022, Editorial Office of China Civil Engineering Journal. All right reserved.
语种	中文
出版者	Chinese Society of Civil Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158055]
专题	土木工程学院经济管理学院
作者单位	Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Shi, Yanli,Ji, Sunhang,Wang, Wenda,et al. Study on hysteretic behavior of tapered concrete-filled double skin steel tubular beam-columns with large hollow ratio[J]. Tumu Gongcheng Xuebao/China Civil Engineering Journal,2022,55(1):75-88.
APA	Shi, Yanli,Ji, Sunhang,Wang, Wenda,Zhang, Chen,&Fan, Jiahao.(2022).Study on hysteretic behavior of tapered concrete-filled double skin steel tubular beam-columns with large hollow ratio.Tumu Gongcheng Xuebao/China Civil Engineering Journal,55(1),75-88.
MLA	Shi, Yanli,et al."Study on hysteretic behavior of tapered concrete-filled double skin steel tubular beam-columns with large hollow ratio".Tumu Gongcheng Xuebao/China Civil Engineering Journal 55.1(2022):75-88.