地震波の方向性を考慮した架構の応答解析に関する基礎的研究 : 任意方向復元力特性による1質点系の動的応答解析法の提案

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This paper proposes the method of dynamic response analysis doing on two directions simultaneously. The contents of this report are as follows. All kinds of structure has two dimentional restoring force characteristics horizontally, which means a curved surface as a back bone curve of restoring force and have two dimentional hysteresis curves. Then dynamic response of one mass system, having a idealized curved surface of a back bone (Fig.-2) and idealized hysteresis curve (Fig.-6), is analyzed with damping factor 0.05 each direction by Runge-Kutta's method. EL-CENTRO (NS : 326 gal, EW : 223 gal) is adopted here as earthquake force. Fig.-9 shows displacement response spectrums by this method and Fig.-10 by one dimentional method. Fig.-11 shows displacement response, velocity response and acceleration response by this method and Fig.-12 shows by one dimentional method.
1972-12-01