Featured Research

from universities, journals, and other organizations

Engineers Shake Up The World As They Perform A First

Date:
February 25, 2007
Source:
University of Nevada, Reno
Summary:
An 8.0 earthquake hit the east side of campus recently, but the only real casualty was a 110-foot bridge. M. Saiid Saiidi, a professor in the civil and environmental engineering department at the University of Nevada, Reno, just created another milestone in research for the University. Saiidi and the team at the University's earthquake lab tested a quarter-scale, four-span bridge with a series of seismic simulations, some of which were approximately the equivalent of an 8.0 Richter scale-quake. It was the first time anyone in the world has tested a four-span bridge

Student Sarina Motaref checks damage to the bridge after a simulated earthquake. (Credit: Photo by Jean Dixon / Courtesy of University of Nevada, Reno)
Credit: Photo by Jean Dixon / Courtesy of University of Nevada, Reno

An 8.0 earthquake hit the east side of campus recently, but the only real casualty was a 110-foot bridge.

M. Saiid Saiidi, a professor in the civil and environmental engineering department, just created another milestone in research for the University. Saiidi and the team at the University's earthquake lab tested a quarter-scale, four-span bridge with a series of seismic simulations, some of which were approximately the equivalent of an 8.0 Richter scale-quake. It was the first time anyone in the world has tested a four-span bridge and it happened at the James E. Rogers and Louis Wiener Jr. Large-Scale Structures Laboratory.

Over 400 sensors on the structure were used to compile data that was broadcast live to scientists and engineers around the globe, and the final test was the 8.0 earthquake simulation; two times the 1994 Northridge earthquake. The lab currently houses three state-of-the-art shake tables for simulating earthquakes.

“Think of this as a huge patient we’ve been working on for years,” said Saiidi. “After each test, we want to know what the status of the patient is, and compiling all this data will help us build stronger, safer bridges.”

The lab is a National Science Foundation (NSF) funded member of the George E. Brown Jr. Network for Earthquake Engineering Simulation (NEES). The lab is used for undergraduate, graduate work and research and is the only facility of its kind in the world.

“We wanted to test some new materials in this bridge,” said Saiidi. “It is going to take some time to analyze the mass of data we now have, but it is quite amazing that we were all able to make this first-time event happen right here and hopefully the results will save many lives.”

Nevada researchers were joined by members of the National Science Foundation, Cal Trans and NDOT, whose financing and expertise made the landmark experiment possible. Students, researchers from Berkeley, UC San Diego, Florida International University, Georgia Tech, Stanford, University of Kansas and University of Illinois, Chicago were also on site for the first-time event.

The tests were broadcast live on the NEES site to hundreds of scientists and engineers all over the world. More than 150 invited guests and members of the media attended the demonstration and the experiment was made possible by a grant from the NSF.


Story Source:

The above story is based on materials provided by University of Nevada, Reno. Note: Materials may be edited for content and length.


Cite This Page:

University of Nevada, Reno. "Engineers Shake Up The World As They Perform A First." ScienceDaily. ScienceDaily, 25 February 2007. <www.sciencedaily.com/releases/2007/02/070223142440.htm>.
University of Nevada, Reno. (2007, February 25). Engineers Shake Up The World As They Perform A First. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2007/02/070223142440.htm
University of Nevada, Reno. "Engineers Shake Up The World As They Perform A First." ScienceDaily. www.sciencedaily.com/releases/2007/02/070223142440.htm (accessed September 2, 2014).

Share This




More Earth & Climate News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Iceland Lowers Aviation Alert on Volcano

Iceland Lowers Aviation Alert on Volcano

AFP (Sep. 1, 2014) Iceland has lowered its aviation alert on its largest volcano after a fresh eruption on a nearby lava field prompted authorities to enforce a flight ban for several hours. Duration: 01:07 Video provided by AFP
Powered by NewsLook.com
Lightning Hurts 3 on NYC Beach

Lightning Hurts 3 on NYC Beach

AP (Sep. 1, 2014) A lightning strike injured three people on a New York City beach on Sunday. The storms also delayed flights and interrupted play at the US Open tennis tournament. (Sept. 1) Video provided by AP
Powered by NewsLook.com
Thailand Totters Towards Waste Crisis

Thailand Totters Towards Waste Crisis

AFP (Sep. 1, 2014) Fears are mounting in Bangkok that poor planning and lax law enforcement are tipping Thailand towards a waste crisis. Duration: 01:21 Video provided by AFP
Powered by NewsLook.com
Melting Ice Shelves Drive Rapid Antarctic Sea Level Rise

Melting Ice Shelves Drive Rapid Antarctic Sea Level Rise

Newsy (Sep. 1, 2014) A study of almost 20 years' worth of satellite images shows Antarctic sea levels are on the rise as ice shelves continue to melt. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins