An evolutionary power spectrum model of fully nonstationary seismic ground motion

doi:10.1016/j.soildyn.2017.11.014

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	An evolutionary power spectrum model of fully nonstationary seismic ground motion
	Wang D ; Fan ZL ; Hao SW(郝圣旺); Zhao DH
刊名	SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
	2018-02-01
卷号	105 页码:1-10
关键词	Evolutionary power spectral density Seismic ground motion Nonstationarity Parameter identification Generalized harmonic wavelets
ISSN号	0267-7261
DOI	10.1016/j.soildyn.2017.11.014
英文摘要	A parametric evolutionary power spectrum model of fully nonstationary seismic ground motion is developed based on the evolutionary spectrum estimation method via generalized harmonic wavelets. The model consists of a frequency-domain energy distribution function and a series of normalized time-dependent envelop functions for different frequencies. The frequency-domain energy distribution function describes the spectral characteristics of the seismic ground motion. The nonstationarity is achieved by the normalized time-dependent envelope functions. For a specific seismic ground motion record, the evolutionary power spectral density (EPSD) is estimated via generalized harmonic wavelets. The parameters are identified by letting the model approximate to the estimated EPSD of the realistic ground motion. By using the spectral representation method, the proposed EPSD model can be used to synthesize the artificial seismic ground motion time histories for engineering purposes.
分类号	二类
URL标识	查看原文
WOS关键词	EASTERN NORTH-AMERICA ; STOCHASTIC-PROCESSES ; SIMULATION ; WAVELETS
WOS研究方向	Engineering, Geological ; Geosciences, Multidisciplinary
语种	英语
WOS记录号	WOS:000423893000001
资助机构	National Natural Science Foundation of China [51408526, 51308487] ; Natural Science Foundation of Hebei Province [E2015203274] ; National Basic Research Program of China [2013CB834100]
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/77870]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Yanshan Univ, Sch Civil Engn & Mech, Qinhuangdao, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang D,Fan ZL,Hao SW,et al. An evolutionary power spectrum model of fully nonstationary seismic ground motion[J]. SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,2018,105:1-10.
APA	Wang D,Fan ZL,郝圣旺,&Zhao DH.(2018).An evolutionary power spectrum model of fully nonstationary seismic ground motion.SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,105,1-10.
MLA	Wang D,et al."An evolutionary power spectrum model of fully nonstationary seismic ground motion".SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 105(2018):1-10.