2方向水平地動を受ける立体構造物の動的崩壊過程-その2 周波数特性の影響-

Abstract

It is necessary for the aseismic safety of building structure to consider that frequencycharacteristics of structure and input excitation affect dynamic failure process of spaceframe subjected to bi-directional ground motion.In this paper, for the purpose of making clear the interaction effects of bi-axial restoringforce characteristics in the nonlinear responses of structures, two kinds of parametricanalyses were performed. One is the dimensional detailed analysis of short period rangecorresponding to the experimental models reported in previous paper and the other is thenondimensional analysis of middle or long period range for generalization of the effect offrequency characteristics.From above analysis, some interesting results, such as degradation of aseismic safety andthe smoothing effect of bi-directional response, were pointed out as to the interaction effect.