Posted on 05/05/2020 9:39:24 AM PDT by C19fan
This is the frightening moment a bridge with heavy traffic moved up and down like waves after reportedly being hit by high winds. Shocking footage shows the Humen Bridge, which spans across the Pearl River in southern Chinese province Guangdong, shaking dramatically while being jam-packed by cars. Local authorities have temporarily shut down the traffic link. They said the structure wobbled after being hit by whirlwinds, according to the press.
(Excerpt) Read more at dailymail.co.uk ...
Does “Galloping Gertie” translate into Chinese?
They probably think Chinese wind is different from American wind.
Chinese engineering expertise is matched only by their medical expertise...
It turns out that DC doesn’t have a monopoly on hot air, as poisonous as it it.
Galloping Gertie.
Does anyone know how old this bridge is? From the pictures, it looks like a conventional suspension bridge, but in such situations I always wonder if the architects and engineers were trying anything new. China’s development has been remarkable in recent decades and stunning new buildings and bridges have become common. As far as I know, the safety record has been good, but mistakes can happen when people start chasing novelty.
“They didn’t learn from Tacoma. “
I’ll bet it would resonate with them.
They are supposed to do that but it stresses the bridge so it comes down to engineering,material and workmanship. Many American bridges have simply fallen.
Maybe the Chinese need to steal better plans for bridges... or hire better liars. This excuse doesn't resonate with most of us.
I guess they didn’t take into consideration the dynamic harmonic effect of the vehicles crossing.
Way back in the olden days when they would build concrete roads/state highways the concrete would be poured in rectangular panels so the joints were perpendicular to the centerline of the road. So when you drove you car it would go flump, flump, flump, flump...etc., as you drove. This wasn’t a problem with the cars prior to the 50’s. By then as cars were getting bigger, faster, and suspensions systems changed it became a problem as a car would developed a harmonic balance from constantly driving over these joints and it would cause the car to actually go off the road. This was referred to as the Buick hop.
Modern concrete roads have diagonal joints so the tires on the front axle or tires on the rear axle are not crossing their respective joints at the same time.
Yeah, but the learning from the Tacoma Narrows was that you CANNOT have a solid surface across the bridge ... you MUST have someplace to vent the air otherwise you create a wing. Physics don’t change.
I wish you people would cease linking to sites that forbid adblockers. You’re pandering to the enemas.
Tacoma Bridge Collapse: The Wobbliest Bridge in the World? (1940) | British Pathé
https://www.youtube.com/watch?v=XggxeuFDaDU
35 MPH wind!
The actual collapse of the world’s third longest bridge (at the time).
That just ain’t right.
Like their buildings that fall over or walls that peel off.
Or the drywall they sent to the USA that was toxic.
Or the virus they send.
Cheap Chinese steel
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