ハザード適合地震波による建物機能損傷の試算,2; 相関の違いが機能損傷に及ぼす影響

Building function loss evaluated with hazard consistent ground motions, 2; Influence of correlation on damage

坂本 成弘*; 五十嵐 さやか*; 西田 明美  ; 村松 健; 高田 毅士*  

Sakamoto, Shigehiro*; Igarashi, Sayaka*; Nishida, Akemi; Muramatsu, Ken; Takada, Tsuyoshi*

その1において用いた地震波群(ハザード適合地震波)の応答スペクトルの統計値(中央値, ばらつき, 周期間相関)を利用して、以下の3種類、(1)ハザード適合地震波の応答スペクトル中央値にフィットする地震波群(ばらつき無し)、(2)ハザード適合地震波の応答スペクトル中央値とばらつきにフィットする地震波群、(3)ハザード適合地震波の応答スペクトル中央値とばらつきと周期間相関にフィットする地震波群の地震波群を作成した。これらの地震波について、一般建物の地震応答解析を実施し、設備機器システム(給排水設備)の被災確率の比較を行った結果を示す。

This paper is intended to clarify the difference of building function loss possibilities which depend on the realization way of the variation and/or inter-period correlation in the response spectra of ground motions. The authors prepared some cases of GMs sets shown in following. The response analyses of a simple RC structure were conducted for each cases and the damage frequencies of equipment system were compared. case(n): simulated GMs which have no variation in response spectra. case(p): simulated GMs which have the same variation in response spectra with case(r), while the inter-period correlation coefficient is 1.0.. case(c): simulated GMs which the same variation with case(r) and the modeled inter-period correlation of case(r) in the response spectra. where, case(r) is the set of original ground motions.