高次モードを考慮した等価線形化法によるせん断型モデルの応答評価

概要

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This paper describes the equivalent linearization method considering higher mode effect. In non-linear response, one modal response affects the characteristics of other modes. In order to incorporate mode interaction, a multi-modal analysis method extended to the non-linear region based on the equivalent linearization concept is proposed. The validity of the proposed method is examined through analyses using story shear models that form story collapse mechanisms, because the effects of higher modes are remarkable in the models. The verification results show that the precision of evaluation is markedly improved by the proposed method, in problems where higher mode effects are remarkable. In the latter part of the paper, some problems with the existing capacity spectrum method in the equivalent linear analysis considering higher mode effect are discussed.
社団法人日本建築学会の論文
2005-05-30