Modal Identification of Boiler Plant Structures by Seismic Records : Identification Based on Multi-Input/Output AR Model
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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. The proposed method utilizes seismic records which include multidirectional base acceleration data, and multi-I/O identification is carried out. This method is composed of two stages: (1) processing of frequency transfer functions by multi-variate autoregressive (AR) spectral analysis, and (2) curve-fitting to extract modal parameters. This method is examined using time-series data of seismic response simulation, and a comparative study is carried out between multi-input and single-input identification. It is shown that asymmetrical structures excited by earthquakes should be identified using multi-I/O identification. This method has actually been applied to in-situ seismic observation data of a boiler plant in operation. As a result of these investigations, this kind of modal identification has proven to be an effective tool for seismic modeling of large-scale structures.
- 一般社団法人日本機械学会の論文
- 1996-03-15
著者
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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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KAWANOBE Koh
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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Kawanobe Koh
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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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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