STUDY ON REDUCTION EFFECTS ON REQUIRED STRENGTH DUE TO ANTI-SEISMIC EFFICIENCY OF NONSTRUCTURAL MEMBERS

Abstract

The purpose of this paper is to predict reduction effects on required strength of multi-mass system subjected to earthquake. There supose that plastic deformations occur in the first story, and that efficiencies of nonstructural members can be equivalently substituted to a linear elasticity and a viscous damping. Considering a probability distribution of equivalent period that is based on a probability distribution of input energy per unit time, and that an input energy variance depend on equivalent viscous damping, it is recognized that predicted values nearly agree with simulation values. Succeedingly, the reduction ratio on required strength based on this method, and their factors are shown.