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The damped outrigger concept for tall buildings
Author(s) -
Smith Rob J.,
Willford Michael R.
Publication year - 2007
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.413
Subject(s) - outrigger , aeroelasticity , structural engineering , structural system , wind engineering , engineering , architectural engineering , sustainability , civil engineering , construction engineering , aerodynamics , aerospace engineering , ecology , biology
This paper describes new concepts for the structural design of high‐rise buildings, in which a system is introduced to increase the dependable structural damping by a factor of 5–10. By so doing the dynamic response of the building to wind effects (buffeting and vortex shedding) is virtually eliminated, leading to substantially reduced lateral design forces and assured occupant comfort. Substantial reductions in structural member size and construction cost savings can be realized in many cases. This may significantly improve the economic viability and sustainability of a development. The paper describes some means by which high levels of damping may be achieved and is illustrated by an implementation on a building, currently under construction, subjected to wind and seismic excitation. Copyright © 2007 John Wiley & Sons, Ltd.