Modal parameter identification of a rigid frame-continuous girders bridge under ambient excitation by fast bayesian FFT method

doi:10.4028/www.scientific.net/AMR.639-640.985

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Modal parameter identification of a rigid frame-continuous girders bridge under ambient excitation by fast bayesian FFT method
	Han, Jianping 1; Zheng, Peijuan 2
	2013
会议日期	December 15, 2012 - December 16, 2012
会议地点	Changsha, China
关键词	Composite beams and girders Finite element method Modal analysis Rigidity Ambient excitation Bayesian theory Finite-element model updating Measurement channels Modal identification Modal parameter identification Modal parameters Residual capacity Stochastic subspace identification
卷号	639-640
期号	1
DOI	10.4028/www.scientific.net/AMR.639-640.985
页码	985-991
英文摘要	Bayesian theory is adopted in modal parameter identification, finite element model updating and residual capacity evaluation of the structures recently. Fast Bayesian FFT modal identification approach provides a rigorous way to obtain modal parameters and well-separated modes using the fast Fourier transform under ambient excitation. Moreover, it avoids choosing the modal order or removing false modes based on the stable diagram and has its obvious advantages. In this paper, modal parameters of a rigid frame-continuous girders bridge under ambient excitation are identified by this approach. Comparison with stochastic subspace identification (SSI) method indicates that Fast Bayesian FFT is a good approach to identify the modal parameters even for a large number of measurement channels. © (2013) Trans Tech Publications, Switzerland.
会议录	Advanced Materials Research
会议录出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
语种	英语
ISSN号	10226680
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117576]
专题	土木工程学院教务处（创新创业学院）
作者单位	1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, Gansu, China; 2.Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou, Gansu, China
推荐引用方式 GB/T 7714	Han, Jianping,Zheng, Peijuan. Modal parameter identification of a rigid frame-continuous girders bridge under ambient excitation by fast bayesian FFT method[C]. 见:. Changsha, China. December 15, 2012 - December 16, 2012.