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Network for Earthquake Engineering Simulation at Berkeley

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NEESR-GC: Mitigation of Collapse Risk in Vulnerable Concrete Buildings  (University of California-Berkeley)

NEESR-SG: Seismic Performance Assessment in Dense Urban Environments  (University of California-Berkeley)

Research Focus & Benefits

The Network for Earthquake Engineering Simulation at Berkeley (nees@berkeley) is an equipment site of the George E. Brown, Jr. Network for Earthquake Engineering Simulation, which includes 14 sites that conduct research designed to mitigate the effects of earthquakes on society.

Since it began operation in 2004, nees@berkeley has specialized in creating models of large-scale structural systems—such as building and bridge systems--and testing the response of the systems to earthquake forces. Nees@berkeley has developed hybrid simulation methods that combine physical and computational structural components into a single model of an entire structure. The site’s equipment also includes a configurable reaction wall facility.

Education & Outreach

Nees@berkeley has an active outreach program. Researchers from around the world attend its hybrid simulation workshops, many going on to write proposals for research at the facility. The outreach program for K-12 students includes site visits during which students design earthquake-resistant structures, build them (using plastic bricks) and have them tested on a nees@berkeley simulator.

Nees@berkeley also hosts tours for visiting researchers and the general public. Faculty members teach undergraduate and graduate courses in earthquake engineering through the Civil Engineering Department at the University of California, Berkeley.

There are several nees@berkeley earthquake simulation and testing videos online.

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  • NEES experiment with simulated tsunami wave
In this experiment, conducted at the O.H. Hinsdale Wave Research Laboratory at Oregon State University, a tsunami wave breaks on a reef crest and begins to propagate over the flat reef, which has some initial standing water. Acoustic doppler velocimeters, which are used to measure fluid velocity, can are on the right side of the flume. Wire resistance wave gauges, used to measure water depths, can be seen on the left side.
R. Riggs, University of Hawaii