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Mitigation of wind-induced vibration of a tall residential building using liquid column vibration absorber

Title
Mitigation of wind-induced vibration of a tall residential building using liquid column vibration absorber
Author
유은종
Keywords
LCVA; TLCD; wind-induced vibration; tall building; vibration control
Issue Date
2016-03
Publisher
JOURNAL VIBROENGINEERING
Citation
JOURNAL OF VIBROENGINEERING, v. 18, NO 2, Page. 1031-1040
Abstract
The most important thing in applying mass type dampers including Liquid Column Vibration Absorber (LCVA) is tuning its natural frequency to an optimum value which is a function of the natural frequency of the building and the mass ratio of damper to the building. However, exact prediction of the natural frequency of the building at design stage is very difficult especially for concrete buildings. Thus, continuous updating of the target frequency and correction of the design of the damper based on field measurement is necessary. In this paper, application of LCVAs to mitigate the wind-induced vibration of 64-story residential buildings is presented. The LCVA were designed to have adjustable dimension for vertical column to take the advantage of ease tuning and wide frequency range. For updating of initial design, the tuning and performance assessment of LCVA several tests and measurement were carried out. The ambient vibration measurement of a partially completed building and a completed building without water in LCVA was performed and final values of the width of vertical column and the height of water were determined from the system identification results based on the collected acceleration data. In addition, ambient vibration measurement of buildings with LCVA water was performed and the system identification results indicated that the apparent damping ratio due to LCVA was increased about 3.13 to 3.89 times.
URI
http://www.jve.lt/Vibro/JVE-2016-18-2/JVE01816031949.htmlhttp://hdl.handle.net/20.500.11754/40632
ISSN
1392-8716
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
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