フジイ　ケンジ   Kenji Fujii   藤井　賢志    所属   千葉工業大学  創造工学部 建築学科    千葉工業大学  工学研究科 工学専攻    千葉工業大学  創造工学研究科 建築学専攻    職種   教授
言語種別	日本語
発行・発表の年月	2013/02
形態種別	学術雑誌
査読	査読あり
標題	単層偏心系モデルの等価１自由度系縮約による地震応答評価のためのねじれ指標
執筆形態	単著
掲載誌名	日本建築学会構造系論文集
出版社・発行元	日本建築学会
巻・号・頁	78(684),299-308頁
著者・共著者	藤井　賢志
概要	The applicability of equivalent SDOF model for the prediction of nonlinear response of single-story asymmetric buildings is discussed in this paper. In the first part, a torsional index is defined based on each mode shape, and the relationship of parameters of asymmetric building model (eccentricity ratio, radius ratio of gyration torsional stiffness) and proposed torsional index is investigated. In the latter part, the applicability criteria of the procedure to predict the largest peak displacement of flexible-side frame of asymmetric buildings by using equivalent SDOF model is investigated. The results show that the predicted results agree well with that of nonlinear time-history analyses, only if the first and the second modes of asymmetric building model are predominantly translational mode; the torsional indices of the first and the second modes are smaller than unity. The contribution of the first modal response to the whole response is also discussed in this paper.