Techno Press
Techno Press

Wind and Structures
  Volume 18, Number 4, April 2014 , pages 375-389
DOI: https://doi.org/10.12989/was.2014.18.4.375
 

HFFB technique and its validation studies
Jiming Xie and Jason Garber

 
Abstract
    The high-frequency force-balance (HFFB) technique and its subsequent improvements are reviewed in this paper, including a discussion about nonlinear mode shape corrections, multi-force balance measurements, and using HFFB model to identify aeroelastic parameters. To apply the HFFB technique in engineering practice, various validation studies have been conducted. This paper presents the results from an analytical validation study for a simple building with nonlinear mode shapes, three experimental validation studies for more complicated buildings, and a field measurement comparison for a super-tall building in Hong Kong. The results of these validations confirm that the improved HFFB technique is generally adequate for engineering applications. Some technical limitations of HFFB are also discussed in this paper, especially for higher-order mode response that could be considerable for super tall buildings.
 
Key Words
    wind tunnel validations; high-frequency force-balance model; high-frequency pressure integration model; multi-force balance system; HFFB/aeroelastic hybrid model; field measurement; wind tunnel tests; nonlinear mode shapes; aeroelastic effects
 
Address
Jiming Xie: Zhejiang University, Hangzhou, Zhejiang, China
Jason Garber: RWDI Inc., 650 Woodlawn Road West, Guelph, Ontario, N1K 1B8, Canada
 
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