Introduction to WIND LOADING OF TALL BUILDINGS (b)

This paper present some selected results of wind tunnel tests carried out on a typical super-tall building The variations of wind loads in the three orthogonal directions with wind attack direction were evaluated. The cross-correlations among various wind loading components were presented and discussed in detail. Furthermore, the across-wind spectral characteristics were studied and an empirical formula for estimation of the across-wind overturning moment spectrum for the super-tall building is presented. The output of this study is expected to be of considerable interest and practical use to professionals and researchers involved in the design of super-tall buildings.

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CORRELATION OF THE COMPONENTS OF WIND-LOADING ON TALL BUILDINGS

Advances in Wind Engineering ◽

10.1016/b978-0-444-87156-5.50046-1 ◽

1988 ◽

pp. 351-360

Author(s):

S.T. THORODDSEN ◽

J.A. PETERKA ◽

J.E. CERMAK

Keyword(s):

Tall Buildings ◽

Wind Loading

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Reduced Equivalent Static Wind Loads for Tall Buildings with Tuned Liquid Dampers

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.1218 ◽

2012 ◽

Vol 226-228 ◽

pp. 1218-1227

Author(s):

Andrew S. Ross ◽

Ashraf A. El Damatty ◽

Ayman M. El Ansary

Keyword(s):

Boundary Layer ◽

Wind Tunnel ◽

Tall Buildings ◽

Wind Loading ◽

Tuned Liquid Damper ◽

Dynamic Component ◽

Tuned Liquid Dampers ◽

Liquid Dampers ◽

Equivalent Static Wind Load ◽

Auxiliary Device

The tuned liquid damper (TLD) is a proven and an increasingly popular auxiliary device for mitigating the dynamic effects induced by wind loading on tall buildings. As buildings become taller, lighter, and more flexible, there is a greater contribution from the dynamic component. The most reliable tool for assessing the dynamic component is wind tunnel testing. A boundary layer wind tunnel is capable of accurately calculating an equivalent static wind load (ESWL) acting on a building. The current study investigates the reduction in the ESWL of a lateral-torsional coupled building with a TLD system installed. The building is sensitive to torsion in the first two vibration modes. The current investigation uses three unique multi-modal TLD systems designed specifically for a lateral-torsional coupled building. The building ESWL is evaluated with the TLD systems using measurements from tests conducted at the Boundary Layer Wind Tunnel Laboratory at Western University.

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