ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Increasing heights of tall buildings often require supplementary damping system foroccupant comfort in windy condition. This paper presents a liquid column vibration absorber(LCVA) installed in a 64-story building, which is the highest residential building with flat platestructural system in Korea, for mitigation of wind-induced motion. LCVA is a special type ofsecondary mass-type dampers relying on the motion of a column of liquid in a U-shaped container tocounteract the forces acting on the structure. Since it has different dimensions for vertical andhorizontal portions of container, it has benefits of easy tuning and wide natural frequency range. Toevaluate the control performance of LCVA, an experiment using 1/20 scaled model is performed. Thetest structure is excited using a sinusoidal signal ranging 0.1 ~ 3.0Hz with 5.5mm displacement, andacceleration and displacement of the structure, water height, and shear force are measured.Experiment results indicate that the LCVA increase the energy dissipation capacity of the buildingsignificantly
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.56.259.pdf
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