Wind-induced fatigue assessment of welded joints of high-rise steel frames considering residual stresses

doi:10.3969/j.issn.1001-0505.2019.04.009

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Wind-induced fatigue assessment of welded joints of high-rise steel frames considering residual stresses
	Li, Wanrun 1,2,3; Liu, Yufei 1,2; Fang, Zhao 3; Li, Aiqun 3,4; Wang, Hui 1; Du, Yongfeng 1,2
刊名	Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition)
	2019-07-20
卷号	49 期号:4 页码:672-678
关键词	Aerodynamic loads Dynamic response Residual stresses Steel construction Structural frames Welded steel structures Welding Welds Wind stress Beam column connection Equivalent structural stress methods High-rise steel frames High-rise steel structure Residual stress fields Steel frame structures Sub-modeling method Welding temperature field
ISSN号	10010505
DOI	10.3969/j.issn.1001-0505.2019.04.009
英文摘要	To study the effect of residual stress on the wind-induced fatigue behavior of high-rise steel structure joint welds, a wind-induced fatigue assessment method considering the influence of residual stress is proposed based on equivalent structural stress. First, the multi-scale model of a 12-storey steel frame structure is established by the multi-scale modeling method. The time history of fluctuating wind speed is simulated by the harmonic superposition method, and the overall dynamic response of the frame structure under the wind load is analyzed. Secondly, a local fine sub-model of beam-column connection with welds and processing holes is established to simulate the welding temperature field and residual stress field. On this basis, the effect of residual stress is considered by applying the initial stress field, and the dynamic response of sub-model under the wind load considering residual stress is calculated. Finally, the fatigue life of steel frame beam-column connection welds is evaluated by the equivalent structural stress method. The results show that the multi-scale method and sub-model technology can be used to analyze the local details of this kind of high-rise steel structure. The welding sequence and welding hole have certain influence on the residual stress distribution of the connections, and the presence of residual stress at the beam-column connection welds results in a reduction in wind-induced fatigue life. The proposed method can be used for the wind-induced fatigue assessment of beam-column connections in high-rise steel frames. © 2019, Editorial Department of Journal of Southeast University. All right reserved.
语种	中文
出版者	Southeast University
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114718]
专题	土木工程学院
作者单位	1.Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing; 210096, China; 4.Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing; 100044, China
推荐引用方式 GB/T 7714	Li, Wanrun,Liu, Yufei,Fang, Zhao,et al. Wind-induced fatigue assessment of welded joints of high-rise steel frames considering residual stresses[J]. Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition),2019,49(4):672-678.
APA	Li, Wanrun,Liu, Yufei,Fang, Zhao,Li, Aiqun,Wang, Hui,&Du, Yongfeng.(2019).Wind-induced fatigue assessment of welded joints of high-rise steel frames considering residual stresses.Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition),49(4),672-678.
MLA	Li, Wanrun,et al."Wind-induced fatigue assessment of welded joints of high-rise steel frames considering residual stresses".Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) 49.4(2019):672-678.