Earthquake Simulation Lab at University of Nevada, Reno

Earthquake Simulation Lab at University of Nevada, Reno In a nutshell: we build big things and break them with earthquakes. Doesn't it sound like fun? Brown Jr. Network for Earthquake Engineering Simulation (NEES).

The Center for Civil Engineering Earthquake Research (CCEER) is headquartered at the Civil Engineering Department at the University of Nevada, Reno. The center was created in 1984 and it features a $10 million state-of-the-art Large Scale Structures Laboratory specializing in the field of bridge engineering. This laboratory has four high performance shake tables with the capability of simulating l

arge earthquakes and is one of 14 equipment sites in the NSF-funded George E. Almost 20 academic, research, and administrative faculty, research scientists, and technicians are affiliated with the Center for Civil Engineering Earthquake Research, and about 30 doctoral and masters students are engaged in research projects under the Center’s umbrella. In its 25-year history the Center has published more than 160 technical reports which describe the results of these activities. Through these and other publications, the Center has become well known for its work in advancing seismic safety, particularly in the area of highway bridges. A Large-Scale Structures Laboratory is a high-bay laboratory with a strong floor that is used for testing man-made structures under extreme loads up to failure. Both dynamic and quasi-static loads can be used to simulate the effects of earthquakes. To accurately capture failure modes, specimens are built as large as possible (preferably full scale). But in many cases the cost of working at full scale is prohibitive in terms of space and loading requirements, and reduced scale models are used instead, usually between ¼ and ½ scale. Even at this scale, bridge and building specimens are large and can occupy the entire length and width of the laboratory. The LSSL at the University of Nevada, Reno is one of only a few such laboratories in the United States that can work at this scale.

Nevada is the third most seismically active state in the U.S. Our laboratory is actively working to make local bridges a...
10/06/2015

Nevada is the third most seismically active state in the U.S. Our laboratory is actively working to make local bridges and buildings safer in case "the big one" hits.

On this day, 100 years ago, Nevada experienced the largest earthquake in the state's history.

We are in the process of designing a new shake table to test soil-structure interaction in our Large-Scale Structures La...
08/18/2015

We are in the process of designing a new shake table to test soil-structure interaction in our Large-Scale Structures Laboratory. The first phase of project is a $4.8M grant funded by the US Department of Energy.

The University of Nevada, Reno is designing a massive new shake table that will provide an unprecedented window into soil/structure interaction.

04/27/2015

One of the current experiments in the laboratory is to test bridge columns during long duration earthquakes (here defined as earthquakes with strong shaking lasting more than 45 seconds). This video shows a shaking table experiment of a reinforced concrete bridge column tested under a long duration motion that was recorded in Tohoku, Japan in 2011.

Note that the bars inside the column begin to break and the concrete at the base of the column crumbles after many cycles of fatigue. The second half of the video shows a close up view of the column from a GoPro camera.

A magnitude 7.8 earthquake struck Nepal today, killing hundreds. It also triggered an avalanche on Mt. Everest that kill...
04/25/2015

A magnitude 7.8 earthquake struck Nepal today, killing hundreds. It also triggered an avalanche on Mt. Everest that killed several climbers. Our thoughts are with all of the people affected by this tragedy.

The earthquake, with an estimated magnitude of 7.9, shook Nepal on Saturday near its capital, Katmandu. Residents described scenes of panic and collapsed buildings, and trekkers reported a major avalanche on Mount Everest.

01/16/2015

Last week we tested another two-span bridge. Here is a video of the final run, which shows the bridge from the side and overhead. The bridge configuration worked incredibly well; the maximum drift was recorded at 7% while the residual displacement was less than 0.25%.

To learn more about the project, visit http://wolfweb.unr.edu/homepage/saiidi/NSF-PFI/index.html.

The University if Nevada's chapter of the American Society of Civil Engineers (ASCE) won a $5,000 prize in the national ...
12/20/2014

The University if Nevada's chapter of the American Society of Civil Engineers (ASCE) won a $5,000 prize in the national ASCE music video contest. The students were asked to rewrite a popular song with lyrics about Civil Engineering and they used the Earthquake Engineering Laboratory as the topic for their video. Congratulations!

The Earthquake Engineering Laboratory at the University of Nevada, Reno is known for testing large-scale structures on its four shake tables. This video is a...

The Earthquake Engineering Laboratory was featured on this morning's episode of the Today Show.  Today marks the 25th an...
10/17/2014

The Earthquake Engineering Laboratory was featured on this morning's episode of the Today Show. Today marks the 25th anniversary of the 1989 Loma Prieta earthquake in San Francisco.

Video on Today: On the 25th anniversary of the earthquake that killed 63 and injured thousands in San Francisco, cameras take an exclusive look inside an earthquake lab at the University of Nevada, Reno, where experts use a high-tech simulator to study how to save lives in the face of disaster. NBC…

The small room we built on the 6DOF shake table for the Today Show.
10/16/2014

The small room we built on the 6DOF shake table for the Today Show.

NBC is at the lab filming a spot for the Today Show that will air tomorrow morning. Be sure to check it out!
10/16/2014

NBC is at the lab filming a spot for the Today Show that will air tomorrow morning. Be sure to check it out!

The most recent set of tests in the Earthquake Engineering Laboratory were on unbonded post-tensioned rocking walls for ...
09/17/2014

The most recent set of tests in the Earthquake Engineering Laboratory were on unbonded post-tensioned rocking walls for resilient structures. More information about the project can be found here: https://nees.unr.edu/projects/rocking-walls

One method of a achieving resilient buildings is to design them with self-centering structural systems to resist earthquake lateral loads. Using a self-cente...

The new laboratory was featured today in Civil Engineering Magazine.
08/18/2014

The new laboratory was featured today in Civil Engineering Magazine.

Earthquake Engineering Lab Expands Research Options Kevin Wilcox A new facility at the University of Nevada, Reno, features four large shake tables that can test not only bridges but buildings as well. August 12, 2014—The University of Nevada, Reno (UNR) recently opened its new Earthquake Engineerin…

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