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시석훈,김충호 경성대학교 공학기술연구소 2000 공학기술연구지 Vol.7 No.-
In modelling seismic isolation systems, the flexibility of the bearing must be modelled correctly so that the period shift is reflected in the results and the model must reflect the reduction in response caused by the hysteretic damping. In the study, the lead rubber bearing(LRB) were each modelled as cantilever beam element at the bearing locations and reduction in response caused by the hysteretic damping was involved by composite spectrum modified the caltrans ARS spectrum curve. The comparison between the LEADeR program and the MIDAS results demonstrates that the values obtained from the modeling are sufficiently accurate to access the benefits of the seismic isolation scheme.