Abstract
High acceleration shaking table system to be called “Strong Shake Generator” (SSG) using resonance vibration has been developed. New concept of setting the resonance table on outside shaking table is devised. Maximum acceleration of 200 m/s2 with 5 ton specimen weight is achieved. At the trial operation of SSG, the environmental influence exceeding the regulation value of vibration level has been occurred at the site boundary of CRIEPI. In order to suppress vibration of SSG, the semi-active mass damper (SAMD) has been additionally installed on base of shaking table. Vibration of SSG was reduced by counterforce of the SAMD. For the confirmation of the earthquake-proof safety for various nuclear facilities, strong shake generator will be utilized.
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