複数の地震応答観測記録から同定した解析モデルによる超高層免震建物の風応答解析

摘要

Recently in Japan, there has been an increasing number of cases where seismically isolation are adopted also in high-rise buildings. High-rise seismically isolated buildings tend to have long natural period making them susceptible to wind influences, thus, wind loads are becoming important design external forces together with seismic loads. Therefore, during the design stage of high-rise seismically isolated building, it is imperative that its wind-induced responses are grasped. However, accuracy of numerically modeled building with wind-induced response of the actual building is still unclear. In addition, there are almost no observation records of wind-induced responses high-rise seismically isolated building in Japan and overseas. Hence, this paper identifies the dynamic characteristics of a seismically isolated high-rise building based on multiple seismic records, and proposed a wind-induced responses history analysis model. This proposed model is verified using multiple wind-induced responses observation records.%本論文では，複数の地震応答観測記録を基に建物の動的特性を同定し，観測値，設計モデルおよび同定モデルによる解析結果を比較した。また，免震層に付与する要素に関しての観測値とそれぞれ比較し，評価を行なった。地震応答観測記録の振幅のばらつきによる，同定モデルおよびその解析結果の検討を行い，更なる精度の向上を確認できた。