地震観測に基づく基礎有効入力動の抽出とその評価指標に関する研究

概要

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The response of foundation during earthquakes is referred to as an effective input motion (EIM). It expresses total interaction effects during earthquakes. This paper discusses what will be an appropriate measure to evaluate the EIM based on obseved earthquake motions. The main conclusions obtained in this study can be summarized as follows. (1) A measure for the EIM, which is defined as a ratio of square root of the integrated squared-motions, has shown close relation to a transfer function of the system, (2) The measure for EIM corresponding to equivalent predominant frequencies of the ground motions fits well to the transfer function estimated from observed records. (3) The component of kinematic interaction is predominant in lower frequencies and the effect of inertial interaction becomes comparable in magnitude to kinematic interaction with increase of frequency.
社団法人日本建築学会の論文
2007-05-30