Modal Identification of Boiler Plant Structures Using Seismic and Microtremor Records
スポンサーリンク
概要
- 論文の詳細を見る
This paper deals with a modal identification method for large-scale structures such as boiler plants in thermal power stations. Practical and accurate modal identification has been carried out using seismic and microtremor records observed in boiler plants in operation. Based on the multi-input/output identification method, 3-D mode shapes were identified from the microtremor records. They are in good agreement with the results of the FEM simulation. Identification using seismic records was then executed by the following two stages in order to evaluate the amplitude dependence of modal damping ratios : ( 1 ) processing frequency transfer functions by the autoregressive (AR) spectral analysis, and ( 2 ) an extraction of modal parameters by a curve-fitting technique. Introduction of two techniques, namely, decimation of time data and FPE criterion to optimize the order of AR models, have realized effective and accurate identification. As a result of this study, our modal identitication method has proven to be effective for seismic modeling of large scale structures.
- 一般社団法人日本機械学会の論文
- 1990-09-15
著者
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SONE Akira
Department of Mechanical and System Engineering, Kyoto Institute of Technology
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Suzuki K
Department Of Mechanical Engineering Tokyo Metropolitan University
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Nishida E
Babcock‐hitachi K.k Hiroshima Jpn
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Nishida Eiichi
Kure Research Laboratory Babcock-hitachi K.k.
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SUZUKI Kohei
Department of Mechanical Engineering, Tokyo Metropolitan University
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IMAMURA Masakatsu
Department of Plant Design, Babcock-Hitachi K.K.
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IMAMURA Masakatsu
Thermal Power Design Department, Babcock-Hitachi K.K.
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Sone Akira
Department Of Mechanical And System Engineering Faculty Of Engineering And Design Kyoto Institute Of
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Imamura Masakatsu
Department Of Plant Design Babcock-hitachi K.k.
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Suzuki Kohei
Department Of Mechanical Engineering Tokyo Metropolitan University
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Suzuki Kohei
Deparment Of Mechanical Engineering Tokyo Metropolitan University
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