VERIFICATION OF THE TOGGLE DAMPING SYSTEM FOR THE SRC BUILDING DURING THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE

Abstract eng:
A steel frame reinforced concrete building completed in 1965 was seismically retrofitted using seismic isolation braces with amplification mechanism. The building was subjected to shaking with a seismic intensity of upper 5 during the 2011 off the Pacific coast of Tohoku Earthquake. The seismic retrofit applied, however, minimized damage. The seismic retrofit performance was then examined based on the ground motions recorded in the building and the results of seismic response analysis using the records. As a result, it was revealed that the retrofit design goal was met and that the deformation of the building was controlled considerably as compared with the case with no retrofit.

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