乾燥収縮により初期変形を受けた免震建物(LRB)の耐震性能の評価

概要

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Journal of structural and construction engineering. Transactions of AIJ (554), 45-51, 20020430 Architectural,Institute of JapanShortening of R/C members caused by dry shrinkage for a base isolated building deforms a base-isolate-equipment. The deformation varies with its position. Usually, the largest value is at the edge of a building plan. The varied initial deformation leads to torsional vibration for the building. This paper examines this torsional vibration parametrically by 3-D dynamic analysis using the models of bilinear hysteresis systems for the vibration isolation materials. The results show that the initial deformation does not have an effect on the seismic ability of base isolated buildings for severe earthquakes. However, it leads to leave residual deformation after not only severe earthquakes but alsomoderate ones.
社団法人日本建築学会の論文
2002-04-30