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6 Love波に関する模擬地震動作成手法

概要

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The purpose of this paper is to develop a generation method of simulated earthquake ground motion in terms of Love waves for building structural design. In this method, a Love wave for structural design is synthesized by the transfer function, the Fourier amplitude and the Fourier phase. It is proposed to apply the transfer function of a Love wave to the Fourier amplitude without the effect of subsurface layer. The amplification is easily calculated since it is provided as a function of the phase velocity. The Fourier phase is selected among the records of earthquake ground motion on the basis of the standard deviation of the phase differences related to the dispersion of waves caused by the effect of a sedimentary basin. The proposed method is validated by the comparison between simulated and observed earthquake ground motion on sedimentary basins.
2007-12-30