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CFTアーチ橋(新西海橋)の振動モデルの検証に関する研究


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Title: CFTアーチ橋(新西海橋)の振動モデルの検証に関する研究
Other Titles: Research on the Validation of the Vibration Model of a CFT Arch Bridge(New Saikai Bridge)
Authors: 宮本, 敬太 / 高橋, 和雄 / 中村, 聖三 / 呉, 慶雄 / 永田, 正美
Authors (alternative): Miyamoto, Keita / Takahashi, Kazuo / Nakamura, Shozo / Wu, Qingsiong / Nagata, Masami
Issue Date: Nov-2008
Publisher: 日本鋼構造協会 / Japanese Society of Steel Construction
Citation: 鋼構造年次論文報告集, 16, pp.297-304; 2008
Abstract: The New Saikai Bridge is a CFT arch bridge with a concrete-filled steel tube (CFT) adopted for the arch ribs of the road bridge for the first time in Japan. lt is necessary to understand the natural vibration and response characteristics of the CFT bridge. The authors measured microtremors of the bridge to estimate the natural frequency and damping constant. The validity of the analysis model was evaluated by comparing the measured natural frequency with the analysis result. In addition,the author carried out a non-linear seismic response analysis using two analysis models,.i.e. one with the confinement effect and the other without the confinement effect,to evaluate the confinement effect of steel pipe on the increase in the strength of concrete.
Keywords: CFTアーチ橋 / 常時微動 / サブスペース法 / 固有振動特性 / 非線形地震応答 / A CFT arch bridge / microtremors / subspace method / natural vibration / nonlinear seismic response
URI: http://hdl.handle.net/10069/30113
ISSN: 18815367
Rights: © 日本鋼構造協会
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/30113

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