普及型強震計による高層建物の応答特性と損傷のモニタリング

概要

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Observation of earthquake response and structural damage evaluation of high-rise buildings are discussed using ordinary acceleration sensors on a full-scaled steel structure specimen for E-defense shaking table experiment. Three different types of acceleration sensors are confirmed as sufficient for response evaluation of high-rise buildings through their observed records under realistic earthquake shaking on the table. A refined modal parameters identification technique is used considering time-lags of observed acceleration records as additional parameters for optimization. As a result, change of identified modal characteristics of the building was clearly shown, however, the change was not so large considering the serious structural damages caused by a series of severe earthquake shaking. Elastic-plastic story deformation was also estimated by use of acceleration records observed at floors. It is shown that the evaluation of structural damage through the change of modal characteristics will be verified considering information on deformation and strain.
一般社団法人日本建築学会の論文
2010-03-27