主系と副系から成る建物を対象とした動的縮約モデルによる層間変位分布の復元

摘要

A two degree-of-freedom (2-DOF) model is employed for mid-story isolation buildings or buildings with a tuned mass damper in practical design. These systems are classified into a primary-secondary system. The objective of this study is to assess the accuracy of inter-story drifts computed by the 2-DOF model through a stochastic vibration analysis. The analysis reveals that this model evaluates accurate floor displacements. However, the model underestimates inter-story drifts in the upper stories of the primary system. A convenient modal superposition method is proposed to improve the accuracy of the inter-story drifts.%本論文では，同調質量ダンパー（TMD)を屋上に有する建物や中 間階免震建物を対象として，これらを主系と副系から成る連成系に 一般化し，不規則振動解析により，この自由度を縮約した地震応答 解析モデル（縮約モデル）による応答の統計的な誤差を分析した。得られた結論を以下に要約する。