2018 Volume 24 Issue 58 Pages 979-984
Free-vibration experiments and static loading experiments were conducted on a 30-year-old base-isolated building in order to evaluate and compare the measured horizontal stiffness of the base-isolation systems obtained from the two experiments. As a result, the horizontal stiffness results obtained from the free vibration experiment showed good agreement with the secant stiffness results obtained from the static loading experiment. This confirms the validity of evaluating the dynamic response of a building seismically isolated by means of natural rubber bearings and steel bar dampers in terms of mechanical properties observed in a static loading test.
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