水平2方向地動を受ける鋼構造1質点振動系の基本応答特性

概要

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A number of response analyses are carried out on lumped-mass vibrational system to study inelastic behaviors of steel building frames subjected to horizontal bidirectional ground motions. Two idealistic shapes, square and circular ones, are presumed to represent the interacted relations between bidirectional resistances or bidirectional displacement limits. It is found that both circular interactions lead to conservative prediction for other combinations of interaction shapes. Existing formulae after Newmark or after Penzien and Umemura to evaluate the ratio of required strength to elastic response shear with respect to frame deformability, which were derived from unidirectional responses, are proved to be conservative enough for the present bidirectional results so far as the elastic response shear is evaluated in consideration of all the possible input directions.
一般社団法人日本建築学会の論文
1993-03-20