INFLUENCE OF HARDENING CHARACTERISTICS OF LARGE DEFORMED SEISMIC ISOLATION MEMBERS ON MAXIMUM RESPONSE DISPLACEMENT OF SEISMIC ISOLATION LAYER

Recently, seismically isolated buildings are required to secure a safety margin against extreme ground motion. The hardening characteristics of members used in seismic isolation layer may suppress excessive displacement of the seismic isolation layer. In this paper, the influence of the hardening characteristics on the seismic response characteristics is investigated. Furthermore, the prediction method for the maximum displacement of the isolation layer is derived based on momentary input energy.