In these earthquake videos, am I correct in thinking that the mass is stationary and the building is moving around it?
Tuned Mass Damper of Taipei 101
11–20 of 89 posts
Re: Tuned Mass Damper of Taipei 101
#12The shape/design was copied by the Westworld designers for the quantum supercomputer "Rehoboam" in season 3. https://www.youtube.com/watch?v=TgBtBkW0u8Y Also - given the large motion of the damper in today's earthquake, why weren't more people freaking out? I'm also curious about how much the dampers (shock absorbers) heated up from restraining the movement of the ball.
People are not freaking out because the damper is doing its job of limiting the movement of the building. They never felt the actual force of the earthquake.
Re: Tuned Mass Damper of Taipei 101
#13In these earthquake videos, am I correct in thinking that the mass is stationary and the building is moving around it?
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Re: Tuned Mass Damper of Taipei 101
#14Damper baby best baby
Came here for this. They’re called “damper babies” and have cute little characters explaining the physics when you visit Taipei 101.
Re: Tuned Mass Damper of Taipei 101
#15Damper baby best baby
Damper baby miniatures are available in the Taipei 101 gift shop. I have a yellow one :)
Re: Tuned Mass Damper of Taipei 101
#16In these earthquake videos, am I correct in thinking that the mass is stationary and the building is moving around it?
Well, the damper isn't completely stationary, but it is moving much less than the building around it, yes.
A good demonstration here: https://m.youtube.com/watch?t=607&v=VCxm3vTWgvU&feature=yout...
Re: Tuned Mass Damper of Taipei 101
#17In these earthquake videos, am I correct in thinking that the mass is stationary and the building is moving around it?
Mostly, yes. The damper acts as a pendulum that’s out of phase with the frequency of the earthquake, negating most of the effects on the building.
Re: Tuned Mass Damper of Taipei 101
#18> Safety comes at a hefty price, however, as the tower’s tuned mass damper cost $4 million to build. A paltry 4 million for a project which cost almost 2 billion (USD); and I imagine it resulted in some measurable reductions in insurance cost. But I wonder, what happens if the entire land that it stands on shifts and is no longer level? That pendulum won't help right a tilted building, and in fact it will move the ce…
Tall buildings are built with deep foundation systems. Taipei 101 has 380 1.5m diameter piles tied into a 3m thick concrete raft that creates its basement. The piles rock socketed into some 40-60m below the structure. those piles are socketed up to 30m into the bedrock.
https://www.civilengineeringforum.me/the-tower-of-taipei-101...
https://structures-explained.com/taipei-101-structural-engin...
It is designed to resist high earthquakes and typhoons. The damper changes the mode of the vibrations to reduce the peak stresses. If an earthquake is going to destroy the foundation there is nothing the tuned mass damper can do. If the entire building is leaning it almost certainly a write off and will be demolished.
Re: Tuned Mass Damper of Taipei 101
#19Damper baby best baby
I still have my keyfob somewhere, first thing I thought of as well.
Re: Tuned Mass Damper of Taipei 101
#20It’s one of the coolest parts about visiting the observatory. Most people just walk right by it on their way back down.