地震動波形の位相特性と強度分布に関する研究

概要

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A significant correlation between phase angle properties of an earthquake ground motion and intensity of motion along a time axis is revealed through numerical analyses. Generated are sets of synthetic earthquake motions of which phase angle properties such as feature of phase angles and distribution of phase differences are prescribed by those obtained from the real earthquake motions. Statistics of peak amplitudes of motion, distribution of maxima of amplitudes, and characteristics of the cumulative energy quantity are discussed in detail. Analyses lead to the conclusion that properties of phase angles and phase differences have a close correlation with variation of intensity of motion associated with time. The spectral form of phase angles specifies the shape of the intensity of motion along its time axis.
一般社団法人日本建築学会の論文