Variable stiffness control algorithm for high-rising buildings of closely spaced frequencies based on wavelet transforms |
| |
Authors: | TENG Jun LU Zhi-xiong and YAN An-zhi |
| |
Affiliation: | TENG Jun1,LU Zhi-xiong1,YAN An-zhi2(1.Center of Bridge and Structural Engineering,Harbin Institute of Technology Shenzhen Graduate School,Shenzhen 518055,China,2.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. |
| |
Keywords: | variable stiffness control semi-active tunable TMD(SAT-TMD) wavelet transforms closely spaced frequencies modal mass participation ratio |
本文献已被 CNKI 维普 万方数据 等数据库收录! |
| 点击此处可从《哈尔滨工业大学学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《哈尔滨工业大学学报(英文版)》下载全文 |