変動クリティカル外乱に対するグローバル性能最大化設計

概要

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Since earthquake ground motions are uncertain even with the present knowledge available, it is difficult to predict forthcoming events in a reasonable way. ft is therefore desirable to develop a robust structural design method taking into account these uncertainties. Critical excitation approaches are promising to overcome such difficulties. In this paper, the power (area of power spectral density function) and the intensity (magnitude of power spectral density function) are fixed and the critical excitation is found under these restrictions. A design problem for restricted variable design earthquakes is formulated as a min-max problem which is expected to lead to the maximum global performance design for variable critical excitations.
2001-01-30