免震構造の地震時最大応答変形推定

概要

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For the performance based design procedure, in earthquake resistant design, it is necessary to estimate maximum displacement of structures subjected to earthquakes without inelastic response analysis. In this paper, two estimation methods of base-isolated structures are shown. Because almost only the 1st mode is dominant in response behavior, base-isolated structures are suitable for estimation based on SDOF system. One method is based on momentary energy response. Estimated displacement is obtained by equalizing structural dissipated energy of hysteretic loop, to momentary input energy of ground motions. The other method is based on equivalent linear system. Almost suitable values can be estimated by these two methods, and influential factors to estimation accuracy are investigated.
一般社団法人日本建築学会の論文
2000-03-20