Seismic performance of shear energy dissipation beams in D-shaped eccentrically braced steel frames

doi:10.1016/j.jcsr.2021.106584

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	Seismic performance of shear energy dissipation beams in D-shaped eccentrically braced steel frames
	Xu, Jixiang 1; Wang, Shuai Lin 1; Mohamed, Hazem Samih 2; Han, Jianping 1; Han, Zhaolong 3; Tu, Jiahuang 4; Li, Zhanjie 5
刊名	Journal of Constructional Steel Research
	2021-05-01
卷号	180
关键词	Bearing capacity Computation theory Connectors (structural) Ductility Energy dissipation Flanges Hysteresis Rigid structures Rigidity Seismic waves Seismology Steel construction Steel structures Stiffness Structural design Structural frames Ductility and energy dissipation capacities Eccentrically braced steel frames Energy dissipation ability Hysteretic performance Load-bearing capacity Stiffness degradation Ultimate bearing capacity Width-to-thickness ratio
ISSN号	0143-974X
DOI	10.1016/j.jcsr.2021.106584
英文摘要	Unlike other eccentrically braced steel frames (EBF) such as Y/K-shaped EBFs, D-shaped EBF has asymmetry, and the failure mechanism of D-shaped EBF is quite different compared to Y/K-shaped EBFs under earthquake load. In view of this, the paper focuses on the seismic performance of the shear energy dissipation beams (SEDB) in EBF. A full-scale computation model of a single-span EBF with a short SEDB was numerically simulated. The results of the existing experiment were employed to verify the validity and accuracy of the proposed computation model. Meanwhile, numerous parametric studies were conducted. The cross-section height, flange width, web thickness, flange thickness and the number of stiffeners (spacing) of the SEDB were selected as the research parameters. By analyzing hysteretic curve, stiffness degradation, ductility and energy dissipation capacity of the SEDB in EBFs, the performance of such structure was investigated. The parametric study indicates that changing the cross-section height of the SEDB had a significant impact on its ultimate bearing capacity, stiffness degradation, ductility and energy dissipation capacity. On the contrary, the flange width of SEDB had a minor effect on the hysteretic performance of the structure. It is also observed that, if the SEDB ‘s web thickness was increased within an acceptable range, the bearing capacity, rigidity and energy dissipation ability may be strengthened. However, the too thick web caused a reduction in the structure ductility. On the other side, when the SEDB's flange thickness was increased, the bearing capacity, rigidity and energy dissipating capacity of the SEDB were slightly increased, but the ductility of the structure was greatly affected. It is also noted that a reasonable spacing of stiffeners improved the load-bearing capacity and stiffness of the structure. Based on the results from the study, a necessary recommendations for height to thickness ratio of the web and width to thickness ratio of flange are provided for the design of the SEDB in EBF. © 2021 Elsevier Ltd
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000632541200006
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147700]
专题	土木工程学院教务处（创新创业学院）
作者单位	1.Department of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu; Sichuan; 610500, China; 3.School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China; 4.College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan; 411105, China; 5.Department of Engineering, SUNY Polytechnic Institute, Utica; NY; 13502, United States
推荐引用方式 GB/T 7714	Xu, Jixiang,Wang, Shuai Lin,Mohamed, Hazem Samih,et al. Seismic performance of shear energy dissipation beams in D-shaped eccentrically braced steel frames[J]. Journal of Constructional Steel Research,2021,180.
APA	Xu, Jixiang.,Wang, Shuai Lin.,Mohamed, Hazem Samih.,Han, Jianping.,Han, Zhaolong.,...&Li, Zhanjie.(2021).Seismic performance of shear energy dissipation beams in D-shaped eccentrically braced steel frames.Journal of Constructional Steel Research,180.
MLA	Xu, Jixiang,et al."Seismic performance of shear energy dissipation beams in D-shaped eccentrically braced steel frames".Journal of Constructional Steel Research 180(2021).