Lateral Seismic Response and Self-Centering Performance of a Long-Span Railway Continuous Beam-Arch Bridge

doi:10.1155/2020/4547532

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Lateral Seismic Response and Self-Centering Performance of a Long-Span Railway Continuous Beam-Arch Bridge
	Shi, Yan 1,2; Zhang, Zhanhong 1; Qin, Hongguo 1; Zhao, Xiangyu 1; Yang, Xiong 1
刊名	Shock and Vibration
	2020
卷号	2020
关键词	Arches Earthquakes Energy dissipation Piers Railroads Seismic design Seismic response Buckling restrained braces Continuous beam bridges Functional separations Horizontal displacements Relative displacement Residual displacement Seismic isolation systems Transverse displacements
ISSN号	10709622
DOI	10.1155/2020/4547532
英文摘要	Based on the seismic isolation design concept of functional separation, a seismic isolation system with bearings and braces combination for railway bridge was proposed. The sliding bearings afford the vertical loads, and the self-centering energy dissipation brace (SCED) and buckling restrained brace (BRB) control the horizontal displacement of the beam, so the functional separation was achieved under the combined action. Taking a long-span railway continuous beam-arch bridge as an example, the corresponding analysis model was established to study lateral seismic response and the girder's displacement pattern of the continuous beam-arch bridge under the earthquake excitations. The seismic response of bridges with different seismic isolation schemes was studied. The result showed that the presence of arch rib in a continuous beam-arch bridge amplifies the transverse displacement response of the girder compared with that in a continuous beam bridge of equal mass. The seismic isolation system with sliding bearings and energy dissipation braces can control the relative displacement between the pier and beam greatly, and the SCED can reduce or even eliminate the residual displacement between pier and beam. Furthermore, under the strong ground motions, the combined use of SCED and BRB can achieve the seismic isolation to the maximum extent when the self-centering force ratio ζ, the ratio of self-centering force to superstructure weight, is 0.074. © 2020 Yan Shi et al.
语种	英语
出版者	Hindawi Limited, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115196]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.West Center of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou University of Technology, Lanzhou, Gansu; 730050, China
推荐引用方式 GB/T 7714	Shi, Yan,Zhang, Zhanhong,Qin, Hongguo,et al. Lateral Seismic Response and Self-Centering Performance of a Long-Span Railway Continuous Beam-Arch Bridge[J]. Shock and Vibration,2020,2020.
APA	Shi, Yan,Zhang, Zhanhong,Qin, Hongguo,Zhao, Xiangyu,&Yang, Xiong.(2020).Lateral Seismic Response and Self-Centering Performance of a Long-Span Railway Continuous Beam-Arch Bridge.Shock and Vibration,2020.
MLA	Shi, Yan,et al."Lateral Seismic Response and Self-Centering Performance of a Long-Span Railway Continuous Beam-Arch Bridge".Shock and Vibration 2020(2020).