ラチスドームのPush-over analysisに基づく地震応答推定に関する一考察 : 1次モード支配型の空間構造物に対する検討

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This paper discusses on the earthquake response estimation of reticular domes supported by a sub-structure based on a push-over analysis. First, domes are represented as a series of parallel lumped masses, which can be easily modeled based on a mode decomposition concept. Second, a push-over analysis is formulated for the lumped masses including the dome and the substructure. The investigation about the accuracy of the push-over analysis follows a series of time-domain dynamic responses including plastic deformation of the substructure. Finally the restriction of the applicability is confirmed from the comparison between the push-over analyses and the time-domain nonlinear analyses, and a simple condition is found that the equivalent mass ratio of the first mode should be greater than 0.80 otherwise the dome responses would be poorly estimated.
社団法人日本建築学会の論文
2002-11-30