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An evolutionary power spectrum model of fully nonstationary seismic ground motion
Wang D; Fan ZL; Hao SW(郝圣旺); Zhao DH
Source PublicationSOIL DYNAMICS AND EARTHQUAKE ENGINEERING
2018-02-01
Volume105Pages:1-10
ISSN0267-7261
AbstractA 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.
KeywordEvolutionary power spectral density Seismic ground motion Nonstationarity Parameter identification Generalized harmonic wavelets
DOI10.1016/j.soildyn.2017.11.014
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000423893000001
WOS KeywordEASTERN NORTH-AMERICA ; STOCHASTIC-PROCESSES ; SIMULATION ; WAVELETS
WOS Research AreaEngineering, Geological ; Geosciences, Multidisciplinary
WOS SubjectEngineering ; Geology
Funding OrganizationNational Natural Science Foundation of China [51408526, 51308487] ; Natural Science Foundation of Hebei Province [E2015203274] ; National Basic Research Program of China [2013CB834100]
Classification二类
Ranking3
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77870
Collection非线性力学国家重点实验室
Affiliation1.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
Recommended Citation
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.
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