Critical distance-based probabilistic fatigue analysis of base-material notches in steel bridges considering size effect

doi:10.1016/j.conbuildmat.2024.139130

	Critical distance-based probabilistic fatigue analysis of base-material notches in steel bridges considering size effect
	Li, Chuanxi 1; Ji, Bohai 1; Yao, Yue 2
	2024-12-13
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
卷号	455
摘要	Notch fatigue significantly challenges the structural integrity of notched components in engineering. This study improved traditional theory of critical distance (TCD) by refining its effective stress formula and critical distance model, while also incorporating Weibull distribution to develop probabilistic fatigue assessment frameworks. Subsequently, the feasibility of these frameworks was validated using fatigue test data from typical notched specimens made of Al2024-T351 and En3B materials. Based on this validation, P-S-N curves for typical notched details in steel bridges were estimated. The results show that the predicted P-S-N curves closely align with fatigue test data and have lower prediction errors than traditional TCD, which verifies the effectiveness of the proposed frameworks in evaluating typical notched details in steel bridges. Additionally, these P-S-N curves offer a potential for assessing the probabilistic fatigue life of similar notched details in steel bridges.
关键词	Steel bridge Notched detail Theory of critical distance Probabilistic fatigue analysis Size effect
其他关键词	LCF LIFE PREDICTION ; STRESS GRADIENT ; COMPONENTS ; STRENGTH ; GEOMETRY
DOI	10.1016/j.conbuildmat.2024.139130
收录类别	SCIE
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:001358347800001
出版者	ELSEVIER SCI LTD
原始文献类型	Article
EISSN	1879-0526
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/173660
专题	国家开放大学江苏分部
通讯作者	Ji, Bohai
作者单位	1.Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210098, Peoples R China; 2.Jiangsu Open Univ, Coll Civil Engn, Nanjing 210036, Peoples R China
推荐引用方式 GB/T 7714	Li, Chuanxi,Ji, Bohai,Yao, Yue. Critical distance-based probabilistic fatigue analysis of base-material notches in steel bridges considering size effect[J]. CONSTRUCTION AND BUILDING MATERIALS,2024,455.
APA	Li, Chuanxi,Ji, Bohai,&Yao, Yue.(2024).Critical distance-based probabilistic fatigue analysis of base-material notches in steel bridges considering size effect.CONSTRUCTION AND BUILDING MATERIALS,455.
MLA	Li, Chuanxi,et al."Critical distance-based probabilistic fatigue analysis of base-material notches in steel bridges considering size effect".CONSTRUCTION AND BUILDING MATERIALS 455(2024).