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

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

IR > 土木工程学院

	Identification for time-varying nonlinear properties of rubber-bearings in base-isolated buildings
	Du, Yongfeng1,2 ; Zhao, Lijie 2; Li, Wanrun1,2 ; Tang, Shaoyu 2
	2016-02-01
发表期刊	Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis
ISSN	10046801
卷号	36 期号:1 页码:86-91
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.
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
DOI	10.16450/j.cnki.issn.1004-6801.2016.01.014
收录类别	EI
语种	中文
出版者	Nanjing University of Aeronautics an Astronautics
EI入藏号	20161302167958
EI主题词	Bearings (structural)
EI分类号	401.1 Bridges - 601.2 Machine Components - 818.1 Natural Rubber - 921.3 Mathematical Transformations - 921.6 Numerical Methods - 951 Materials Science
来源库	Compendex
分类代码	401.1 Bridges - 601.2 Machine Components - 818.1 Natural Rubber - 921.3 Mathematical Transformations - 921.6 Numerical Methods - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112953
专题	土木工程学院
作者单位	1.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou; 730050, China; 2.Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学
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.