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タイトル: Modal-Physical Hybrid System Identification of High-rise Building via Subspace and Inverse-Mode Methods
著者: Fujita, Kohei
Fujimori, Yuhei
Takewaki, Izuru
著者名の別形: 藤田, 皓平
竹脇, 出
キーワード: system identification
subspace method
inverse-mode method
shear-bending model
high-rise building
発行日: 7-Feb- 28
出版者: Frontiers Media SA
誌名: Frontiers in Built Environment
巻: 3
論文番号: 51
抄録: A system identification (SI) problem of high-rise buildings is investigated under restricted data environments. The shear and bending stiffnesses of a shear-bending model (SB model) representing the high-rise buildings are identified via the smart combination of the subspace and inverse-mode methods. Since the shear and bending stiffnesses of the SB model can be identified in the inverse-mode method by using the lowest mode of horizontal displacements and floor rotation angles, the lowest mode of the objective building is identified first by using the subspace method. Identification of the lowest mode is performed by using the amplitude of transfer functions derived in the subspace method. Considering the resolution in measuring the floor rotation angles in lower stories, floor rotation angles in most stories are predicted from the floor rotation angle at the top floor. An empirical equation of floor rotation angles is proposed by investigating those for various building models. From the viewpoint of application of the present SI method to practical situations, a non-simultaneous measurement system is also proposed. In order to investigate the reliability and accuracy of the proposed SI method, a 10-story building frame subjected to micro-tremor is examined.
著作権等: © 2017 Fujita, Fujimori and Takewaki. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
URI: http://hdl.handle.net/2433/235722
DOI(出版社版): 10.3389/fbuil.2017.00051
出現コレクション:学術雑誌掲載論文等

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