PREDICTION OF HABITABILITY TO VIBRATION BASED ON IDENTIFICATION MODELS OF A HIGHRISE SEISMICALLY ISOLATED BUILDING USING STRONG WIND OBSERVATION RECORDS
We observed wind and acceleration of the actual building with seismic isolation structure, and the observed response showed nonlinear
behavior. In order to identify an equivalent linear structural model for the maximum response acceleration, the identification method
must be devised. Response analysis was performed by spectral modal analysis, which is often used to study wind response. The
maximum response acceleration corresponded well with the observed value, but the standard deviation deviated, so the equivalent
linear model should be applied limitedly depending on the purpose. A slight difference in the relationship between wind speed and
response acceleration has a great influence on the evaluation of habitability. On the other hand, even if the mode of the seismic isolation
layer changes, the evaluation is not greatly affected. A parameter study of attenuation constant and mass was performed, and the range
of change in evaluation value due to structural model errors was shown.
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