EARTHQUAKE RESPONSE PREDICTION OF SEISMICALLY ISOLATED BUILDINGS BASED ON RESPONSE SPECTRUM METHOD CONSIDERING CHANGES IN CHARACTERISTICS OF LEAD RUBBER BEARINGS DUE TO REPEATED DEFORMATION

Abstract

In 2016, a countermeasure against the Nankai trough long-period and long-duration ground motions (LPGMs) was announced. However, the response spectrum method (RSM), indicated by the Ministry of Construction notification Vol. 2009 (MCN), is out of the countermeasure. An RSM that considers characteristic changes due to repeated deformation has also been proposed, but since the damping correction formula of MCN is used, its applicability to LPMGs has not been sufficiently investigated. In this paper, we proposed a method for evaluating the influence of characteristic changes due to repeated deformation using RSM for LPGMs and seismically isolated buildings using LRB.