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タイトル: Mode identifiability of a multi-span cable-stayed bridge utilizing stabilization diagram and singular values
著者: Goi, Y.
Kim, C.W.
著者名の別形: 五井, 良直
金, 哲佑
キーワード: benchmark study
cable-stayed bridge
cumulative contribution ratio
operational modal identification
発行日: 25-Mar-2016
出版者: Techno-Press
誌名: Smart Structures and Systems
巻: 17
号: 3
開始ページ: 391
終了ページ: 411
抄録: This study investigates the mode identifiability of a multi-span cable-stayed bridge in terms of a benchmark study using stabilization diagrams of a system model identified using stochastic subspace identification (SSI). Cumulative contribution ratios (CCRs) estimated from singular values of system models under different wind conditions were also considered. Observations revealed that wind speed might influence the mode identifiability of a specific mode of a cable-stayed bridge. Moreover the cumulative contribution ratio showed that the time histories monitored during strong winds, such as those of a typhoon, can be modeled with less system order than under weak winds. The blind data Acc 1 and Acc 2 were categorized as data obtained under a typhoon. Blind data Acc 3 and Acc 4 were categorized as data obtained under wind conditions of critical wind speeds around 7.5 m/s. Finally, blind data Acc 5 and Acc 6 were categorized as data measured under weak wind conditions.
著作権等: 発行元の許可を得て掲載しています。This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/236011
DOI(出版社版): 10.12989/sss.2016.17.3.391
出現コレクション:学術雑誌掲載論文等

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