Experimental study on steel-reinforced concrete-filled steel tubular columns under the fire

doi:10.1016/j.jcsr.2021.106867

CORC > 兰州理工大学 > 兰州理工大学 > 附属中学

	Experimental study on steel-reinforced concrete-filled steel tubular columns under the fire
	Mao, Wen-Jing 2; Wang, Wen-Da 2; Zhou, Kan 1; Du, Er-Feng 3
刊名	JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
	2021-10
卷号	185
关键词	Steel-reinformed concrete filled steel tubular (SRCFST) columns Failure mode Critical temperature Fire resistance
ISSN号	0143-974X
DOI	10.1016/j.jcsr.2021.106867
英文摘要	This paper aims to experimentally study the fire performance of steel-reinforced concrete-filled steel tubular (SRCFST) columns without fire protection. Eight SRCFST specimens with cruciform section profiled steel were tested under the ISO-834 standard fire. The various test parameters including cross-section type of steel tube (circular or square), the load ratio and load eccentricity were considered and discussed. The temperature distribution, failure modes, axial and lateral deformation, fire resistance of the specimens obtained by test were investigated in detail. The results show that the cruciform section profiled steel provided great confinement effect to core concrete, and can efficiently suppress the generation and development of cracks in concrete. The specimens with diverse load ratio or loading method present various tendency of axial deformation versus time curves, i.e. five stages for axially loading specimens with common load ratio (n = 0.4) and three stages for specimens with high load ratio (n > 0.4) or specimens under eccentric compression. The critical temperature of SRCFST specimens is much lower than that of steel structures and CFST columns at same parameters, and the fire resistance of SRCFST columns has significant improvement compared with CFST columns. Moreover, available design method for SRCFST columns and CFST columns were compared with test results to evaluate the applicability for SRCFST specimens.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000684995600005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148951]
专题	附属中学土木工程学院
作者单位	1.Univ Bradford, Fac Engn & Informat, Bradford BD7 1DP, W Yorkshire, England; 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 3.Southeast Univ, Sch Civil Engn, Nanjing 211189, Peoples R China
推荐引用方式 GB/T 7714	Mao, Wen-Jing,Wang, Wen-Da,Zhou, Kan,et al. Experimental study on steel-reinforced concrete-filled steel tubular columns under the fire[J]. JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH,2021,185.
APA	Mao, Wen-Jing,Wang, Wen-Da,Zhou, Kan,&Du, Er-Feng.(2021).Experimental study on steel-reinforced concrete-filled steel tubular columns under the fire.JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH,185.
MLA	Mao, Wen-Jing,et al."Experimental study on steel-reinforced concrete-filled steel tubular columns under the fire".JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 185(2021).