Millenium Bridge

[happinesson]

wow. the bridge is oscillating. amazing.

[TheJerican]

Faut pas avoir le mal de mer... ;-)

[FlameHue]

It's year 2011, and we can't even build a bridge yet.

[angusleilomo]

lol fujino effect

[Photonzos]

So build a proper bridge in the first place. Duh!!!!

[PEACHES1576]

its actually something to do with the oscillations of the bridge matching to the oscillations of the people who were all walking in time ? my friend told me

[brumchap]

I was there. There was a strong cross wind blowing downriver. It seemed clear to me that this was setting off a resonant response in the flag poles, and this in turn may have been transmitted to the bridge.This would be a far more embarrassing failure for the construction engineers, all of whom would have grown up watching footage of the Tacoma Narrows Bridge. I wouldn’t be surprised if the politics of the time led to the explanation of Synchronous Lateral Excitation being the official verdict.

[jeanniedee]

should have left it ....more fun

[inteliosohg]

haha they look like a bunch of marching Uruk-hai going side to side like that

[Guesswhokk]

The Great British Engineering Failures: (They just have to fail in style)

Titanic - wrong grade bolts & other engineering mods to the Olympic are seen as submission of poor design judgement

Millenium Bridge - Harmonics is a classic scenario, but now the Brits "stumble" a new failure mode with synchronize footstep.

Royce Royce (Volcanic Ash) - Obviously haven't done there homework, thus NATS implimented the American's zero tolerance approach.

Beagle 2 - sad

Sinclair C5

MG Rover

[StolenMonkey]

@Guesswhokk Great British Engineering wonders far outshine the odd mishap . Don't be a dick . thanks

[Guesswhokk]

@StolenMonkey

Thats true, so many civil engineering projects since from the 1800 like Brunel. The Brits kinda wrote the book for the whole world about modern national civil engineering project. But still, ever since then the Jap and US kinda took over. Harmonic is a known factor but FEA sim in the wrong vector. Any engineer would tell you "bi-pedal" would produce different harmonics then a wheel from a truck. It just one of those things overlooked like paint on Hubble lens.

[iloveabba100]

@Guesswhokk No need to be jealous of the awesomeness of Brits! You know, there are many examples of great British engineering, eg Clifton Suspension Bridge

[Mateaplate]

@Guesswhokk The millenium bridge didnt fail, there was just too much exessive deflection which worried the public like this

and you should look at - The Tay bridge collapse, Ronan point collapse, the Cleddau bridge collapse - These are some real pivotal British engineering failures

[Guesswhokk]

@Mateaplate

I never knew in civil eng term, it wouldn't class as a failure mode. It like saying tilting train vs media hype about spilling drink, if I recall the eng firm had to prove the media wrong or do they even have to prove anything?

[bbslugger8]

haha good stuff guys

[bennyboy121]

where is the party at?

[maccafan10]

I've never seen so many totally smashed people all in one place at once.

[fennoman12]

wow... i love this ride! they sould give it to France (DisneyLand Paris)

[morbideddie]

we keep on getting shown this in uni when ever they mention resonance. we get the point

[hai2410]

its surprisingly high frequency

[frozenbound]

It's too bad they had to fix it-I'd love to go for a walk on a bridge swaying like that!

[dannyboyrkn2k8]

a was on that bridge at that time

[GPpwnage]

Its was Disign To Do That So If a Wind hit itt it would'nt break use common sense

[cray0308]

its called resonance. search for tacoma narrows.

[scabdool]

romans destroyed many bridges just by marching.

[manosxa]

the bridge was not designed in horizontal vibration modes but only in vertical. They solved the problem by installing dampers at the support. playguitar86 dont write stupid things that are wrong.

[shlempnar]

okay yeah it swings. but it sure as hell doesn't seem to get you anywhere fast!

[philfeerich]

Typical English. Just got too much natural rythm.

[chandru1103]

hahahahaha

[199markp]

The best Millenium Bridge is the Gateshead one!

[randog69]

these are sheeple

[dastechnoviking]

mathematicians found that the way people keep balance on a swaying bridge only added to the sway of the bridge. more research is now being done to study the way human beings maintain balance. i don't think the romans noticed this ever.

[Socram2k]

god bless british inventions muhahahaha

[jm18819]

jajajajajajajajaj they do look like penguins!! Does the bridge moves like this all the time or was it because too many people were in it!!

[encr22]

:) the bridge was moving due to the 'penguins' marching in time (shifting the weight on the bridge from left to right)!.. Of course they were stepping from side to side in time because the bridge's movement!

CHICKEN OR EGG!?..

It doesn't move anymore cos they've fixed it but it seems they're saying it'd be unlikely to sway under normal conditions anyway..

[EAMCloveforever]

no actually it was because of resonance. the constant rythmic thumping made it come close to its natural frequency so it started to vibrate, it had nothing to do with the directoin the people were moving but that they were moving in rythym.

[loganswell]

I believe the introduced lots and lots of small shock absorber like devices to dampen the resonance. After Tacoma I don't think I'd have been crossing during peak resonances! Yet the engineers declared it safe - that it was just "uncomfortable"!

[mslobski]

ahahah, they look like penguins!

[GolfredoCadenas]

Me parece que a la obra es espectacular se podia observar la oscilacion del puente es increible el ingenio del creador felicitaciones

[SmiertSpionem]

Lets twist again!

[thistlewarrior]

It's funny how the Romans had worked out this is a problem on bridges yet two thousand years later some halfwit managed to "overlook" this.

[loganswell]

It's called "cost cutting"!

[wysiwyg2006]

it was always safe even during the wobble

it now has dampening to stop the wobble as it made people queezy

[miles291187]

Synchronous Lateral Excitation due to lack of lateral and vertical support. ;)

[AllaMoanaBePraised]

I heard on the television promotions to come to the bridge-opening celebrtions and on such a nice day -lots of people came.

.

Normally nowadays, the bridge is popular but never busy; never as busy as that opening day promotion.

.

Cheers.

from,

del-boy.

[colmtheperson]

I love the way they just stand around and watch this happen....

If it were me I'd be running off that bridge so fast!!!

[jma1273]

Be Careful to resonance Please ! !

[EliteXtasy]

Pah! Tourists...

[lookcloser1976]

Whoah, this is pretty cool. Didn´t all those people realize what´s going on?

[FlyingFalcon1280]

yah alot of dem got seasick