Multi-scale wind-induced fatigue analysis method of high-rise steel braced frame structure

doi:10.3969/j.issn.1001-0505.2017.01.024

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Multi-scale wind-induced fatigue analysis method of high-rise steel braced frame structure
	Fang, Zhao 1; Li, Aiqun 1,2; Li, Wanrun 1,3; Zhou, Yanchun 1
刊名	Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition)
	2017-01-20
卷号	47 期号:1 页码:137-141
关键词	Crack initiation Cracks Floors Steel structures Stress concentration Structural frames Welding Welds Beam-to-column joints High stress concentration High-rise steel structure Multi-scale Practical engineering Steel braced frame structures Stress concentration zone Time history analysis
ISSN号	10010505
DOI	10.3969/j.issn.1001-0505.2017.01.024
英文摘要	To study the wind-induced fatigue performance of the high-rise steel structures, a structural multi-scale fatigue analysis method, which is from the global scale to the local joint scale and then to the local weld scale, is proposed. A high-rise steel braced frame structure is selected as the practical engineering example and the corresponding wind loading is simulated. Through the establishment of the multi-scale finite element model, the time-history analysis is performed. The beam-to-column joint with more concentrated stress in this structure is determined and the stress concentration zone in this welded joint is obtained. Then, the crack initiation life is evaluated by the hot spot stress method and the effects of the element type and the meshing size on the results are studied. The results show that, in this structure, the lower side span location in the frame beam upper flange of the ground floor beam-to-column joint is easy to produce high stress concentration and initiate fatigue cracks. As for the meshing style near welds, the linear element and the meshing size of 4 mm are basically satisfied with the precision requirements. The fatigue life of the project is 335 a. © 2017, 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/114776]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Southeast University, Nanjing; 210096, China; 2.School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing; 100044, China; 3.Institution of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Fang, Zhao,Li, Aiqun,Li, Wanrun,et al. Multi-scale wind-induced fatigue analysis method of high-rise steel braced frame structure[J]. Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition),2017,47(1):137-141.
APA	Fang, Zhao,Li, Aiqun,Li, Wanrun,&Zhou, Yanchun.(2017).Multi-scale wind-induced fatigue analysis method of high-rise steel braced frame structure.Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition),47(1),137-141.
MLA	Fang, Zhao,et al."Multi-scale wind-induced fatigue analysis method of high-rise steel braced frame structure".Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) 47.1(2017):137-141.