Identification for time-varying nonlinear properties of rubber-bearings in base-isolated buildings

doi:10.16450/j.cnki.issn.1004-6801.2016.01.014

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Identification for time-varying nonlinear properties of rubber-bearings in base-isolated buildings
	Du, Yongfeng 1,2; Zhao, Lijie 1; Li, Wanrun 1,2; Tang, Shaoyu 1
刊名	Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis
	2016-02-01
卷号	36 期号:1 页码:86-91
关键词	Discrete wavelet transforms Multiresolution analysis Nonlinear analysis Nonmetallic bearings Numerical methods Rubber Stiffness Base isolated structure Nonlinear Rubber bearing Time-varying stiffness Wavelet multi-resolution analysis
ISSN号	10046801
DOI	10.16450/j.cnki.issn.1004-6801.2016.01.014
英文摘要	To understand the performance state of rubber bearings under seismic action, a new method is proposed to identify time-varying nonlinear properties of the rubber-bearing isolated system based on wavelet multi-resolution analysis technique. First, based on the discrete sequences of wavelet multi-resolution analysis theory, the approximate unknown time-varying nonlinear restoring force of rubber bearings is expressed by the Daubechies wavelet coefficient. Then, the wavelet coefficients are estimated by the least-squares technique, and the nonlinear restoring force of the rubber bearing is reconstructed. Finally, the identification method has been applied to numerical examples. The results show that the proposed approach can accurately identify the nonlinear characteristics of rubber bearings when the superstructure stiffness changes and can also track the stiffness degradation of the superstructure, thus demonstrating its validity and accuracy. © 2016, Editorial Department of JVMD. All right reserved.
语种	中文
出版者	Nanjing University of Aeronautics an Astronautics
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112953]
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.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Du, Yongfeng,Zhao, Lijie,Li, Wanrun,et al. Identification for time-varying nonlinear properties of rubber-bearings in base-isolated buildings[J]. Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis,2016,36(1):86-91.
APA	Du, Yongfeng,Zhao, Lijie,Li, Wanrun,&Tang, Shaoyu.(2016).Identification for time-varying nonlinear properties of rubber-bearings in base-isolated buildings.Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis,36(1),86-91.
MLA	Du, Yongfeng,et al."Identification for time-varying nonlinear properties of rubber-bearings in base-isolated buildings".Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis 36.1(2016):86-91.