Fire resistance of reinforced SHS T-joints considering gradient temperature effect under post-earthquake fire

doi:10.1016/j.jcsr.2022.107195

IR > 土木工程学院

	Fire resistance of reinforced SHS T-joints considering gradient temperature effect under post-earthquake fire
	Xu, Jixiang; Jiang, Wang; Han, Jianping; Wang, Jianjun
	2022-04
发表期刊	Journal of Constructional Steel Research
ISSN	0143-974X
卷号	191
摘要	The earthquake usually causes serious damage on the T-joints in structure, which may reduce its fire resistance. Moreover the gradient temperature distribution for reinforced SHS T-joints appears under a fire. Therefore it is very necessary to evaluate the fire resistance of reinforced SHS T-joint considering gradient temperature effect under post-earthquake fire (PEF). The objective of this paper is to investigate the fire resistance of earthquake-damaged doubler-plate reinforced SHS T-joints considering gradient temperature effect. A computation model was established and validated using the existing experimental results. The gradient-temperature field distribution against reinforced SHS T- joints was conducted by transient-response analysis method, then a parametric study was carried out using 30 established computation models involving following dimensionless parameters such as the width ratio of brace to chord (δ), diameter to thickness ratio of chord (ζ), wall thickness ratio of doubler-plate to chord (α), wall thickness ratio of brace to chord (Ε), length ratio of doubler-plate to chord (ξ), ratio of chord length to chord width (φ), welding effect, damage variable (D~) and fire retardant coating thickness. The results demonstrated that damage variable and fire retardant coating thickness had a great influence on the fire resistance of doubler-plate reinforced SHS T-joints, the parameters δ, ζ and α had a major influence on reinforced SHS T-joints. The findings can provide data support and theoretical reference for the design, maintenance and reinforcement of such joints. © 2022 Elsevier Ltd
关键词	Coatings Computation theory Earthquakes Fire resistance Plates (structural components) Reinforcement Thickness measurement Transient analysis Computation model Critical temperatures Doubler plates Doubler-plate reinforced SHS T-joint Gradient temperature Plate reinforced Post-earthquake fire resistance Post-earthquake fires T joints T-joints
DOI	10.1016/j.jcsr.2022.107195
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS记录号	WOS:000761038500001
出版者	Elsevier Ltd
EI入藏号	20220811698458
EI主题词	Temperature
EI分类号	408.2 Structural Members and Shapes ; 484 Seismology ; 641.1 Thermodynamics ; 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory ; 813.2 Coating Materials ; 914.2 Fires and Fire Protection ; 943.2 Mechanical Variables Measurements ; 951 Materials Science
来源库	WOS
引用统计	被引频次：1[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/158007
专题	土木工程学院教务处（创新创业学院）
通讯作者	Xu, Jixiang
作者单位	Lanzhou Univ Technol, Dept Civil Engn, Lanzhou 730050, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	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	Xu, Jixiang,Jiang, Wang,Han, Jianping,et al. Fire resistance of reinforced SHS T-joints considering gradient temperature effect under post-earthquake fire[J]. Journal of Constructional Steel Research,2022,191.
APA	Xu, Jixiang,Jiang, Wang,Han, Jianping,&Wang, Jianjun.(2022).Fire resistance of reinforced SHS T-joints considering gradient temperature effect under post-earthquake fire.Journal of Constructional Steel Research,191.
MLA	Xu, Jixiang,et al."Fire resistance of reinforced SHS T-joints considering gradient temperature effect under post-earthquake fire".Journal of Constructional Steel Research 191(2022).