掲載雑誌（和）： 土木学会論文集 I 巻： -巻 号： 416/I-13号 頁： 181‐190頁 年： 1990年 月： 4月 著者（和）： - タイトル（和）： 強震記録に基づく斜張橋（水郷大橋）の減衰特性の解析 抄録（和）：
- キーワード（和）： - 掲載雑誌（英）： JOURNAL OF STRUCTUAL MECHANICS AND EARTHQUAKE ENGINEERING 著者（英）： タイトル（英）： Analysis of damping characteristics of a cable stayed bridge based on strong motion records. 抄録（英）：
Damping characteristics are significant factors for seismic design of a cable stayed bridge. It is general in seismic design to assume a damping ratio of approximately 2‐5% of critical for superstructure. However, damping ratio which has so far been estimated from field observation such as forced vibration test is generally much smaller than those values. This study presents an analysis on the damping characterisitics of a cable stayed bridge where strong motion records have been accumulated. Damping characteristics are analyzed through analytical simulation for the measured response by varying the damping ratio assumed in the analysis. It is concluded from the analysis that the damping ratio which gives the best correlation in response analysis simulation is 2% and 0-1% of critical in longitudinal and transverse direction, respectively, for the tower, and 5% in both directions for the deck. キーワード（英）： - 記事区分： - 区分 　　　　論文集