応答スペクトル特性を考慮した地震入力エネルギーの評価に関する研究: 地震入力エネルギーの推定および実建物の地震応答解析

摘要

本論では，告示が定める「極めて稀に発生する地震動」の加 速度応答スペクトルに適合する様々な位相特性の告示波を作成し， 実建物の復元力特性に基づく地震応答解析を行い，位相特性およ び応答スペクトル特性が地震入力エネルギーに与える影響につい て検討を行い以下の知見を得た。 1）f値は応答スペクトル特性を考慮していないため，ある特定の 条件下を除いて，地震入力エネルギーを適切に評価できないこ とが分かった。 2）応答スペクトル特性を適切に評価するために応答スペクトル特 性値S_M値を提案した。%In this paper, the influences of the phase characteristic and the response spectrum characteristic of the earthquake wave on the earthquake input energy are examined based on the earthquake response analysis using the simulated seismic wave which is adjusted the normalized response spectrum. As a result, the characteristic of f value proposed by Akiyama and Kitamura is clarified, and proposes the response spectrum effect value S_M and f~* value considering S_M value. The earthquake input energy of any earthquake wave without the case that earthquake response analysis is able to estimate using f~* value. Moreover in this paper, f~* value corresponding to the earthquake load which Japanese Building Standard Act provide is presumed by conducting seismic response analysis of real buildings. Therefore, on the comparing with f~* values of the existing seismic waves, the quantitative evaluation about that earthquake damage can be performed. The evaluation of the earthquake input energy based on f~* value as well as acceleration at the maximum is necessary for the evaluation of the earthquake wave. The f~* values are useful on the evaluation of the input earthquake wave.