Nevada engineers mimic earthquake to test bridge designs

RENO — A day after a deadly earthquake struck Mexico City, scientists at Nevada earthquake lab are declaring success after testing new bridge designs they created to better withstand violent temblors and speed reconstruction after quake damage.

The University of Nevada, Reno, engineers performed the test Wednesday, a day after the big Mexico earthquake.

They used a giant “shake table” to simulate the violent motions of an earthquake to rattle a 100-ton, 70 foot bridge model to determine how well it would hold up.

The research team’s leader is Professor Saiid Saiidi.

He says new connector types to link prefabricated bridge parts with ultra-high performance concrete worked better than expected, and says the computer models they used before the test had suggested there would be a higher level of bridge damage.

Saiidi says the new technology could prove pivotal in the future for earthquake prone places like Mexico and the Western United States that try to minimize damage and keep bridges open for rescue and recovery efforts.

Some design work by the engineers has been incorporated into a highway off-ramp under construction in Seattle. It has flexible columns and reinforcement bars made out of a metal alloy that bends and then springs back into shape when quakes hit.

Bridges are already designed not to collapse in earthquakes but often are unsafe for travel after big quakes.

The elements have been tested on their own but never before combined in a bridge model subjected to realistic earthquake motions, like the 1994 Northridge, California, quake.

The University of Nevada’s Earthquake Engineering Lab is the largest of its kind in the United States.

The scientists’ project is funded by the California Department of Transportation.

ad-high_impact_4
Local
Metro Asst. Sheriff Brett Zimmerman on Aug. 8 officer-involved shooting
Metropolitan Police Department Assistant Sheriff Brett Zimmerman met with media Monday to discuss the details of the 14th officer-involved shooting of the year. (Madelyn Reese/ Las Vegas Review-Journal)
Matt Kelly Elementary School hosted its third annual Back-to-School Red Carpet Program
Matt Kelly Elementary School hosted its third annual Back-to-School Red Carpet Program where community and business leaders joined to welcome students back with an inspirational welcome. Bizuayehu Tesfaye/Las Vegas Review-Journal @bizutesfaye
Star Trek fans on show’s enduring popularity
Star Trek fans at the Star Trek Convention 2018 talk about why they think the show has stayed popular across the years Thursday, August 2, 2018. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
Nonprofit provides clothing for homeless
Sydney Grover of Can You Spare A Story?, talks about how she founded the non-profit organization. (Marcus Villagran/Las Vegas Review-Journal)
Family remembers deceased mother
Family members of Adriann Gallegos remember her. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
Camp Broadway teaches kids how to sing and dance
The Smith Center's seventh annual Camp Broadway musical theater program gives 150 kids ages 6-17 an opportunity to learn musical theater skills from industry professionals over a five-day period. Marcus Villagran/ Las Vegas Review-Journal @brokejournalist
Restoring classic Corvettes to perfection
Members of the National Corvette Restorers Society Convention talk about what it takes to earn the NCRS Top Flight Award for a restored Corvette at South Point in Las Vegas on Tuesday July 17, 2018. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
Watch Ruthless! at Las Vegas Little Theatre
The musical Ruthless! will be playing at Las Vegas Little Theatre from July 13-29. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
Cadaver art and sword swallowing at The Dark Arts Market
Curator Erin Emrie talks about her inspiration for The Dark Arts Market at Cornish Pasty Co. in Las Vegas Tuesday, July 10, 2018. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
'NO H8' Campaign comes to Las Vegas
Hundreds of locals participate in the NO H8 campaign founded by Adam Bouska and Jeff Parshley as a response to Proposition 8, a California ban on same-sex marriage. The campaign has since evolved to represent equal treatment for all. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
What to expect at Station Casinos' Fourth of July celebration
Station Casinos' is hosting its annual 4th of July celebration with Fireworks by Grucci. Fireworks scheduled to go off on Wednesday, July 4 around 9 p.m. at Green Valley Ranch Resort, Red Rock Resort, Fiesta Rancho and Texas Station. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
Star Wars and Golden Knights mashup at downtown art shop
Star Wars and Vegas Golden Knights fans attend the Boba Fett Golden Knight Paint Class at The Bubblegum Gallery in Las Vegas, Friday, June 29, 2018. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
Tourists and locals enjoy Independence Day fireworks at Caesars Palace
Hundreds of tourists and locals gaze at the Independence Day fireworks show at Caesars Palace on Saturday, June 30, 2018. (Marcus Villagran/Las Vegas Review-Journal) @brokejournalist
Clark County recount votes in commission’s District E primary
Clark County staff begin the recount requested by candidate Marco Hernandez in the democratic primary for the County Commission's District E seat on Tuesday, June 26, 2018. (Marcus Villagran/Review-Journal) @brokejournalist
Long-running local hip hop producer wants Vegas rappers to shine
Las Vegas Hip Hop producer and co-owner of Digital Insight Recording Studios Tiger Stylz reflects on 30 years of music production in the city. (Marcus Villagran/Review-Journal) @brokejournalist
"Pawn Stars" fans visit Richard Harrison's memorial at Gold & Silver Pawn
"Pawn Stars" fans from around the world visit the Gold & Silver Pawn Shop in Las Vegas following the passing of Richard "Old Man" Harrison on Monday, June 25, 2018. (Marcus Villagran/Review-Journal) @brokejournalist
Construction for new 51s ballpark underway
New home of the Las Vegas 51s is planned to be finished by March 2019 in Summerlin according to team president Don Logan. (Marcus Villagran/Review-Journal) @brokejournalist
TOP NEWS
News Headlines
Add Event
Home Front Page Footer Listing
Circular
You May Like

You May Like