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World's largest earthquake shake test

World's largest earthquake shake test

RE: World's largest earthquake shake test

Real testing is very fascinating and makes you think.

The video brings back memories when we attached accelerometers to every joint on a steel frame rocket test stand (60x60x80) that carried about 175,000# of fuel while the gimbaling rocket engine went through a 4 minute test. All critical design loads went up and not down. We had access to an air frame design/analysis program and compared the current(at the time) AISC code/standards.

A great education.

Engineer and international traveler interested in construction techniques, problems and proper design.

RE: World's largest earthquake shake test

I wonder a few things, and I am in wind-only country so pardon my ignorance:
-how many tables in the world can also simultaneously produce vertical movements?
-that event seemed very short, but perhaps the magnitude of the event they were testing only may last 15 seconds?
-it seemed like relatively low magnitude until I saw the interior shot
-the structure seemed to perform well, but it was likely over engineered and built in a lab. But I am impressed by how well a 6-story wood frame structure was able to resist the event without any major damage (from what they showed)...

RE: World's largest earthquake shake test

Interesting. It seemed like the accelerations the R/C frame was subjected too was stronger. Also it seemed like they had the top of the R/C frame strike a support.

RE: World's largest earthquake shake test

a2mfk - I'm a little familiar with shake table seismic testing.  There are a lot of tables that can do 3 axis random movement, but none that large. I believe wikipedia actually has a page that shows a lot of the shake tables.

I believe most seismic shake table tests don't last much more than 20 seconds.

It looks like they are recreating the Northridge earthquake, which was one of the major ones.  I don't think the video does justice to it.

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