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http://dx.doi.org/10.12989/sem.2008.30.1.001

Passive, semi-active, and active tuned-liquid-column dampers  

Chen, Yung-Hsiang (Department of Civil Engineering, National Taiwan University)
Ding, Ying-Jan (Construction and Planning Agency, Ministry of the Interior)
Publication Information
Structural Engineering and Mechanics / v.30, no.1, 2008 , pp. 1-20 More about this Journal
Abstract
The dynamic characteristics of the passive, semi-active, and active tuned-liquidcolumn dampers (or TLCDs) are studied in this paper. The design of the latter two are based on the first one. A water-head difference (or simply named as water head in this paper) of a passive TLCD is pre-set to form the so-called semi-active one in this paper. The pre-set of water head is released at a proper time instant during an earthquake excitation in order to enhance the vibration reduction of a structure. Two propellers are installed along a shaft inside and at the center of a passive TLCD to form an active one. These two propellers are driven by a servo-motor controlled by a computer to provide the control force. The seismic responses of a five-story shear building with a passive, semiactive, and active TLCDs are computed for demonstration and discussion. The responses of this building with a tuned mass damper (or TMD) are also included for comparison. The small-scale shaking-table experiments of a pendulum-like system with a passive or active TLCD to harmonic and seismic excitations are conducted for verification.
Keywords
TLCDs; modelling; controls; experiments;
Citations & Related Records

Times Cited By Web Of Science : 6  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
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