位相差分特性を考慮した設計用模擬地震動作成に関する研究 : その4 ω^2モデルで規定したフーリエ振幅と位相差分の標準偏差を基準として選択したフーリエ位相を用いた模擬地震動作成手法

概要

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In this paper, a generation method of simulated earthquake ground motion for the structural design of buildings is proposed. In the method, the Fourier amplitude is prescribed by the ω-square model and the Fourier phase is selected from the observed data, based on the standard deviation of the phase difference, in which the source and propagation characteristics of seismic waves are reflected. Since the Fourier amplitude and phase are independently dealt with, these properties can be logically determined based on the source and propagation characteristics of seismic waves. The features of the time history and response spectrum can also be clearly explained in terms of these properties. The proposed method is useful because it can be applied to both inter-plate and crustal earthquakes, and is rational because the simulations are validated by comparison with observed earthquake ground motion.
2005-04-30