Fire resistance and flexural load capacity of beam-column welded-bolted hybrid connection joints under post-earthquake fire

doi:10.1016/j.istruc.2024.106165

IR > 土木工程学院

	Fire resistance and flexural load capacity of beam-column welded-bolted hybrid connection joints under post-earthquake fire
	Xu, Jixiang; Chong, Xinda; Han, Jianping
	2024-04
发表期刊	Structures
卷号	62
摘要	This paper investigates the fire resistance and flexural load capacity of beam-column welded-bolted hybrid connection joints (BWHJ) considering the gradient temperature effect under post-earthquake fire (PEF). A computation model of the BWHJ was established using ANSYS. The accuracy and effectiveness of the computational model were validated by comparing with available experimental results. Gradient temperature distribution on beam-column welded-bolted hybrid connection joints was obtained by temperature field analysis. 25 finite element models were created to conduct parameter analysis (width-to-thickness ratio of column flange (α), height-to-thickness ratio of column web (η), height-to-thickness ratio of column stiffener (γ), width-to-thickness ratio of beam flange (δ), height-to-thickness ratio of beam web (β) and damage variable (D˜)). Finally, the calculation method for the flexural load capacity of the BWHJ under PEF was proposed. The results showed that the fire resistance time of the BWHJ decrease with the increase of the damage variable. The parameter η has a clear effect on the failure mode of the BWHJ, and parameters η, δ, β, and D˜ have a significant impact on the PEF performance of the BWHJ. The reduction of flexural capacity caused by damage variables is greater than that caused by temperature. The research findings can provide basic data, theoretical references, and technical support for design and study under PEF. © 2024 Institution of Structural Engineers
关键词	Bolts Computation theory Earthquakes Flanges Temperature Welding Beam-column joints Beam-columns Flexural load capacity Flexural loads Hybrid connection Load capacity Parametric analysis Post-earthquake fire resistance Post-earthquake fires Welded-bolted hybrid connection
DOI	10.1016/j.istruc.2024.106165
收录类别	EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20241015705688
EI主题词	Fire resistance
EI分类号	484 Seismology ; 538.2 Welding ; 605 Small Tools and Hardware ; 619.1.1 Pipe Accessories ; 641.1 Thermodynamics ; 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory ; 914.2 Fires and Fire Protection
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/169962
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	Department of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, 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,Chong, Xinda,Han, Jianping. Fire resistance and flexural load capacity of beam-column welded-bolted hybrid connection joints under post-earthquake fire[J]. Structures,2024,62.
APA	Xu, Jixiang,Chong, Xinda,&Han, Jianping.(2024).Fire resistance and flexural load capacity of beam-column welded-bolted hybrid connection joints under post-earthquake fire.Structures,62.
MLA	Xu, Jixiang,et al."Fire resistance and flexural load capacity of beam-column welded-bolted hybrid connection joints under post-earthquake fire".Structures 62(2024).