Numerical simulation and hybrid test of the girder bridge with self-centering unidirectional friction damper

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	Numerical simulation and hybrid test of the girder bridge with self-centering unidirectional friction damper
	Liu, Yunshuai 1,2; Han, Jianping 1,2
刊名	Tumu Gongcheng Xuebao/China Civil Engineering Journal
	2020-12-01
卷号	53 页码:294-300
关键词	Beams and girders Earthquakes Energy dissipation Constitutive relations Continuous bridges Friction damper Internal forces Residual displacement Seismic mitigation Sliding bearing Without energy dissipation
ISSN号	1000131X
英文摘要	The bearings of traditional girder bridges are easy to sustain large residual displacement under earthquake ground motion.In order to solve this problem, the traditional bridge bearings is replaced by a self-centering unidirectional friction damper system, which is constituted of Teflon sliding bearings and self-centering unidirectional friction dampers installed between the girder and the cap beam.First, the self-centering unidirectional friction damper with pretension was equivalent to a system which is composed with an element without pretension and a bilinear spring element without energy dissipation capacity in parallel, then the constitutive relation of the damper was simulated via OpenSees.Furthermore, a 4-span continuous bridge with self-centering unidirectional friction damper was taken as case study, and the dynamic analysis and hybrid test were conducted to investigate the displacement and internal force responses of the bridge under earthquake.For hybrid test, the damper and the bearing on the No.1 pier were taken as the experimental substructure, and the other parts of the bridge were taken as the numerical substructure.Comparison between the numerical analysis and the hybrid test results shows that the equivalent simulation of the damper is reasonable, and the bridge with the self-centering unidirectional friction dampers has good seismic mitigation and self-centering capacity. © 2020, Editorial Office of China Civil Engineering Journal. All right reserved.
语种	中文
出版者	Chinese Society of Civil Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150677]
专题	土木工程学院教务处（创新创业学院）
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Liu, Yunshuai,Han, Jianping. Numerical simulation and hybrid test of the girder bridge with self-centering unidirectional friction damper[J]. Tumu Gongcheng Xuebao/China Civil Engineering Journal,2020,53:294-300.
APA	Liu, Yunshuai,&Han, Jianping.(2020).Numerical simulation and hybrid test of the girder bridge with self-centering unidirectional friction damper.Tumu Gongcheng Xuebao/China Civil Engineering Journal,53,294-300.
MLA	Liu, Yunshuai,et al."Numerical simulation and hybrid test of the girder bridge with self-centering unidirectional friction damper".Tumu Gongcheng Xuebao/China Civil Engineering Journal 53(2020):294-300.