EVALUATION OF SAFETY MARGIN OF SEISMICALLY ISOLATED BUILDINGS CONSIDERING HARDENING CHARACTERISTICS OF LAMINATED RUBBER BEARING

In this paper, the safety margin of seismically isolated buildings (SIBs) is probabilistically evaluated using Incremental Dynamic Analysis (IDA), and effect laminated rubber bearing’s hardening characteristics on SIBs also verified quantitatively. As a result, since non-consideration overestimates margin, it important to consider in evaluation superstructure’s margin. Also, tendency by IDA under numbers actual ground motions showing high consistency with that general design motions.