A STUDY ON PROLONGATION OF THE LIFETIME OF SEISMIC ISOLATED BUILDING WITH LEAD RUBBER BEARING

Abstract

In order to prolong the lifetime of seismic isolated building with lead rubber bearing (LRB), we investigate the relationship between the seismic response of the LRB-isolated building and the aging of LRB by a non-linear response analysis. For the non-linear response analysis, the restoring-force model of LRB taking in account the aged deterioration over 100 years old is developed from the experimental data. The experimental equation of the failure shear stress of LRB is also proposed. From the seismic response analyses, the aged deterioration of the failure shear stress of LRB is found to be important in the life-prolongation of LRB-isolated building.