목표스펙트럼의 평균과 분산에 근사한 지반운동 선정 방법에 따른 결과 비교

Abstract

Performance evaluation method developed in recent years requires linear or nonlinear time-history analysis, which needs forselecting proper ground motions to evaluate accurate demand and capacity of the structure. It is important to select groundmotions to make the mean and variance of their response spectra match those of the target response spectrum. Kottke andRathje (2008) are proposed the process for selecting the proper ground motion using semi-automatic method but the step iscomplicate and lead to a lot of computational cost. This study proposed an efficient method for selecting ground motions. Thispaper compares the selection results obtained from the two methods with the same target spectrum and ground motions library.