Premium
Wavelet‐Based Generation of Energy‐ and Spectrum‐Compatible Earthquake Time Histories
Author(s) -
Yazdani Azad,
Takada Tsuyoshi
Publication year - 2009
Publication title -
computer‐aided civil and infrastructure engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.773
H-Index - 82
eISSN - 1467-8667
pISSN - 1093-9687
DOI - 10.1111/j.1467-8667.2009.00621.x
Subject(s) - wavelet , energy (signal processing) , ground motion , nonlinear system , wavelet transform , spectral line , motion (physics) , geology , computer science , acoustics , physics , mathematics , seismology , artificial intelligence , statistics , quantum mechanics , astronomy
A method of modifying earthquake ground motion based on the wavelet transform is proposed, to take into account the effects of linear/nonlinear response spectra, frequency content, and ground motion energy. A wavelet‐based procedure has been used to decompose recorded ground motion into finite wavelet coefficients, and then, with matrix processing, the coefficients have been suitably substituted and scaled to match the response spectra and total energy of earthquake ground motions. The proposed method has been verified by modifying five recorded accelerograms such that they are compatible with the same linear/nonlinear and energy spectra.