Friday, January 11, 2013
Build a Tower to Withstand Earthquakes?
Japan's newest skyscraper is impressive indeed and uses an idea for its structure based on observations of items that have withstood earthquakes over centuries.
Tokyo's Sky Tree tower is designed with the principles that the five story pagodas use. These pagodas have withstood high winds and earthquakes for over a 1000 years. The base of the tower is in the shape of a tripod. Plunging into the air are a series of what is called root-like spikes that form a wall. Inside the wall is a core building modeled after the ancient pagodas.
If I understand it correctly, the inside core is unattached to the wall until it reaches a height of 410 feet. Then it attached with oil dampers (a form of shock absorbers) that act as cushion during earthquakes. These dampers can absorb 50% of the energy that comes with an earthquake.
It is the second tallest tower in the world at 2,080 feet.
Below is a link to a video about it from CBS news.
This could be a great way to lead into a lesson about constructing towers.