System Ddentification of a Five-Storied Steel-Frame Structure Based on Natural Frequency Deviation with Known Mass Loading
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Bibliographic Details
| Author(s): |
Naoki Hatakeyama
Shinichi Matsushima Fumiaki Nagashima Hiroshi Kawase |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Elegance in structures, Nara, Japan, 13-15 May 2015 | ||||
| Published in: | IABSE Conference Nara 2015 | ||||
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| Page(s): | 302-303 | ||||
| Total no. of pages: | 5 | ||||
| Year: | 2015 | ||||
| DOI: | 10.2749/222137815815775105 | ||||
| Abstract: |
In this study, we observe microtremors on each story of a five-storied steel-frame structure, and obtain the natural frequencies up to 5th modes. By loading an added mass of pre-determined amount (2% of the total mass) to each story of the structure one by one, we observe significant changes of natural frequencies as independent information. Using these six cases of natural frequencies we identified physical parameters of each story. As a result we obtained reasonable parameters that can reproduce observed natural frequencies and modes quite well. |
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| Keywords: |
natural frequency dynamic response system identification MDOF
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