What is used to stabalize buildings for Eeathquake prevention?

Answer 1

Some buildings are designed with reinforced structures, and they are designed to actually move with 'quakes, so they do not fall down - similar to bridges.

Answer 2

There are many techniques to stabalize a building during an earthquake.
All buildings have lateral load resisting systems those are the primary means on resisting the ground motion cuased by an earthquake.

I areas of low seismic risk these are usually enough to make an earthquake safe, because they all have in inherint damping, that is if they sway from side to side they will eventually stop because of the material absorbing some of the energy.

In Areas with heigher seismic activity like vancouver or california, this is often not enough to protect tall building from huge earthquakes. There are two general methods for these situations, Base Isolation and Energy dissipation. Base Isolation is like putting the whole building on a bearing so that when the ground shakes not as much of that motion is actually transfered to the building whihc slides on bearings, hinges or plates.

Energy dissipation is becoming increasingly popular it involves forcing somthing to deform thereby absorbing sone of the Earthquakes energy.

There are many types of these and most of them are called dampers because they increase the damping in the building and will cause it to come to a rest sooner than if they werent included.

I am doing reasearch on tuned liquid dampers which are large water tanks on a buildings roof that slosh around when subjected to an earthquake. This sloshing actually createds a counter force to the earthquake motion and dissipates a lot of the energy associated with a quake.

there are also tuned mass dampers, elastomeric bearings and others

Answer 3

A very interesting technology is emerging and may be (if it hasn't already been) put into new skyscrapers.

These shock absorbers, or dampers, use a chamber filled with magnetorheological fluid to counteract the gyrations caused by earthquakes. Rheology is the study of fluid flow, and magnetorheological fluids are ones whose flow is affected by a magnetic field. By placing a simple bar magnet near this fluid, it turns from a fluid into a solid (with a certain shear strength). The future of this technology lies in creating fluids with higher shear strengths. Note that electrorheological fluids (which are affected by electric fields) also exist.

The way this is put into practice in buildings? Large cylinders of fluid sit on every floor of the building. As the building sways, the fluid moves towards a region where a magnetic field exists. It becomes a solid and thus resists the swaying motion of the building. When it flows the other direction, it again comes in contact with a magnetic field, becomes solid, and counteracts the motion. The change from liquid to solid (and vice-versa) is almost instantaneous. With this resistance occurring on each floor of the building, it is stabilized from top to bottom and the structure itself is subjected to less damaging forces.

Answer 4

You can't prevent earthquakes. Though you can build in measures to minimise damage to buildings in the event of an earthquake.

There are a number of ways in which this is done, though they all have one principle in common - if things get damaged less by earthquake if they are allowed to move with the earthquake and not be rigid.

Following this principle, steel framed structures generally fare better than masonry (stone/brick) structures due to the inherent flexibility of steel. Curtain walling (where glass or metal cladding forming the envelope of the building is supported from the top, like a curtain is hung from the top) fares better than infills (where the external skin of the building is built to fill in the voids between the frame of the building structure) for the same reasons.

So to allow buildings to move with the earthquake, various devices can be incorporated into the building's structure. Movement joints help masonry or concrete buildings deal with the inherent rigidity of that material. Absorbers, which look like giant spring coils can be incorporated at the base of the building frame. Resonance devices that react to movement to counteract forces resulting from earthquake can also be incorporated.

Answer 5

In lamens terms, they put a kind of shocks at the bottom of the buildings,usually skyscrapers. The shocks make the building sway, not fall. Also I think there may be some sore of really strong cables or poles connection the building and the foundation, maby.

Answer 6

tall buildings today have shock absorbers. Some uses a gigantic metal balls so the building will just sway giving little damage to the building.some uses springs just like the one on vehicles.

Answer 7

Steel

Answer 8

prayers