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The evaluation of wind‐induced vibration responses to a tapered tall building
Author(s) -
You KiPyo,
Kim YoungMoon,
Ko NagHo
Publication year - 2008
Publication title -
the structural design of tall and special buildings
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 43
eISSN - 1541-7808
pISSN - 1541-7794
DOI - 10.1002/tal.371
Subject(s) - tapering , structural engineering , vibration , wind speed , vortex shedding , cross section (physics) , wind direction , wind tunnel , environmental science , meteorology , marine engineering , engineering , acoustics , physics , computer science , aerospace engineering , turbulence , computer graphics (images) , quantum mechanics , reynolds number
The mitigation of wind‐induced excitations of tall buildings was investigated. The shape of a building can be aerodynamically modified by changing the taper of the cross‐section. This modification alters the flow pattern around the building, and reduces wind‐induced vibration of tall buildings. A tapered tall building that spreads the vortex‐shedding over a broad range of frequencies more effectively reduces cross‐wind responses. In this paper, to investigate the tapering effect on the reduction of wind‐induced responses of a tapered tall building, a high‐frequency force‐balance test was conducted. Six types of building model of differing taper ratios—2·5%, 5%, 7·5%, 10%, 15%, and a basic building model of square cross‐section—were tested on two typical atmospheric boundary layers representing suburban and urban areas. The effect of wind direction was also considered. Copyright © 2007 John Wiley & Sons, Ltd.