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Damping in tall buildings – uncertainties and solutions

 Damping in tall buildings – uncertainties and solutions
Author(s): ,
Presented at 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008, published in , pp. 66-67
DOI: 10.2749/222137908796225618
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In the design of tall buildings, the dynamic response in wind is a dominant consideration. The damping of the building has a major influence on the dynamic response, and the structural engineer has...
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Bibliographic Details

Author(s):

Medium: conference paper
Language(s): English
Conference: 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008
Published in:
Page(s): 66-67 Total no. of pages: 8
Page(s): 66-67
Total no. of pages: 8
Year: 2008
DOI: 10.2749/222137908796225618
Abstract:

In the design of tall buildings, the dynamic response in wind is a dominant consideration. The damping of the building has a major influence on the dynamic response, and the structural engineer has to make an informed decision as to an appropriate value to assume for design.

This paper reviews available measured data on the damping of tall buildings and compares against values in common usage. It is found that damping ratios commonly assumed in design are inappropriate and unconservative.

The paper describes the consequences of over-estimation of damping at the design stage, and illustrates the benefits of incorporating robust supplementary damping systems to reduce dynamic response, to reduce uncertainty and to improve economy in design.

Keywords:
wind high-rise buildings dampers risk damping seismic occupant comfort