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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:TENG Jun,LU Zhi-xiong,YAN An-zhi.Variable stiffness control algorithm for high-rising buildings of closely spaced frequencies based on wavelet transforms[J].Journal of Harbin Institute Of Technology(New Series),2010,17(5):600-606.DOI:10.11916/j.issn.1005-9113.2010.05.002.
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Variable stiffness control algorithm for high-rising buildings of closely spaced frequencies based on wavelet transforms
Author NameAffiliation
TENG Jun Center of Bridge and Structural Engineering,Harbin Institute of Technology Shenzhen Graduate School,Shenzhen 518055,China 
LU Zhi-xiong Center of Bridge and Structural Engineering,Harbin Institute of Technology Shenzhen Graduate School,Shenzhen 518055,China 
YAN An-zhi Institute of Civil Engineering,Henan Polytechnic University,Jiaozuo 454100,China 
Abstract:
To establish the algorithm of SAT-TMD system with the wavelet transform(WT),the modal mass participation ratio is proposed to distinguish if the high-rising structure has the characteristic of closely distributed frequencies.A time varying analytical model of high-rising structure such as TV-tower with the SAT-TMD is developed.The proposed new idea is to use WT to identify the dominant frequency of structural response in a segment time,and track its variation as a function of time to retune the SAT-TMD.The effectiveness of SAT-TMD is investigated and it is more robust to change in building stiffness and damping than that of the TMD with a fixed frequency corresponding to a fixed mode frequency of the building.It is proved that SAT-TMD is particularly effective in reducing the response even when the building stiffness is changed by ±15%;whereas the TMD loses its effectiveness under such building stiffness variations.
Key words:  variable stiffness control  semi-active tunable TMD(SAT-TMD)  wavelet transforms  closely spaced frequencies  modal mass participation ratio
DOI：10.11916/j.issn.1005-9113.2010.05.002
Clc Number:TU352.13
Fund:

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