Quote:
Originally Posted by gttx
A passive stabilization system is used by most (well, all) buildings - essentially they are self-supported and do not need any electronic monitoring to react to large lateral forces. In tall buildings, larger passive stabilization systems are things like outrigger systems and tuned mass dampers; the latter causes the building to "self-adjust" to lateral loads from wind or even seismic events.
Because of the enormous forces this tower would see - and because of its sheer size - such a passive system would not be possible. Instead, it would require computer monitoring and real-time adjustment through new, "active" stabilization systems. The system itself would be revolutionary, but, as with anything that does not really solely on gravity, has the potential to fail under particular scenarios - some outlined by Chriss. I believe Burj Dubai uses a combination of passive and active systems.
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Aren't most of the stabilization systems currently in use more for occupant comfort than structural soundness? Structurally, all buildings could withstand a lot more force than occupants would be willing to put up with, so as long as the passive systems in a building can withstand forces enough to keep it structurally sound, then if all the failure of active systems does is make the occupants uncomfortable it's not much to worry about and becomes simply a question of economics.
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