Simulation of the newly opened Bay Bridge in San Francisco in an earthquake. Pretty interesting to see the engineering that allows the bridge to twist and flex.
Watch videos of the earthquake in Japan from the top of skyscrapers. They're remarkably resilient actually, mainly due to the flexibility. The important part is to dampen oscillations, because oscillations can increase in strength during an earthquake and cause structural failure.
The new bay bridge opens next week.Hope those new bolts hold up as they had to be replaced before this bridge was even finished.. I'm in Oakland,think I'll take one last drive on the old bridge before they close her down for good,great memories....except when her top 50 foot section collapsed during the 89 quake.Oh well,we're only human right?
I wouldn't have demo'd the old part until October 17, 2024... Loma Prieta 35. I would also have left a small part of it, like a pylon as a memorial to both the victims of the quake and The Miracle on Interstate 880. The Miracle on I-880 is right up there with The Miracle of Stairway B, a miraculous event on a day otherwise known for a massive tragedy. Of course, we've still got AT&T Park (if the home of the San Francisco Giants can survive the quakes in "San Andreas", then it's certainly going to survive the next REAL LIFE Bay Area Big One!), the spiritual successor to Candlestick Park (which would also be a good place for a memorial to The Loma Prieta Quake of 1989). It's called honoring the past while looking to the future at the same time.
Pleasee dude i am a senior high school student who will make a bridge like this as a thesis. what software did you use in all of this. and how do i test various types of simulation.
I don't know either i was born with weird brain or something is wrong with me because I love nature disasters such as tornadoes, earthquakes, tsunamis and volcanoes eruption. Maybe it's something really scary horrifying, terrifying, unbeatable and unbelievable but to me it's something normal. I just want to experience at least one of those nature disasters in my life time. Unfortunately, I'm living in a country where it's literally unaffected by nature disasters. Guess which country is it. What do you think about me? Am I crazy or something else?
The cantilever bridge did just fine in the earthquake the problem was the wooden tiles that were driven in the mud sure to off at the bottom of the concrete footings. The new bridge is a cantilever design that is 10 times inherently more dangerous to structural failures because of its lack of redundancy in the design that is horrible beyond belief.
Nothing is earthquake-proof; "earthquake-resistance" is the goal of modern engineering. Contrary to the astonishing number of uninformed comments in this stream, known component-manufacturing issues have been or are in the process of being mitigated. Even without mitigation, the new bridge is many times more earthquake-resistant than the old one. Not going to use this new beauty? Great! More room for me! For anyone actually interested in facts, they are easily available at various online sites.
if we were to have a 8 or a 10, would the Cables would be able to withstand, Or the Bolts that we already had problems with before. or if it were to just collapse like most bridges did in the past disaster?
The western suspension portion underwent a seismic retrofit but the eastern part could not be effectively upgraded. For one thing, that part of the bridge was built on wood pilings driven into the bay mud in the 1930's. Not a great foundation.
Having lived there.. I still don't trust "New" innovations on ANYTHING!! "Mother Nature out smarts us. Not the other way around!! Good Luck!! I hope it works..
I regret to say that the catenery system that is shown on the bridge have a lot of rectangles (0:58) and a rectangle will change its shape due to the fact that its diagonal is not bounded to create TRIANGLES. So I am afraid the damping of the deck would not be as shown as those blessed vertical cables from the main catenery cable will cause the main cable to develop not only the fundamental but also the harmonic frequencies. The damping cannot come from that cable suspension system but it had to come from the deck which is a little better than the old Tacoma Narrow bridge which has the same cable suspension system. If those suspension cables had additional diagonals or the deck was stayed by cables forming triangles anchored from the deck directly to the pylon or tower then the deck will not vibrate as shown in fact it will be more stable as any oscillation will be canceled by the triangular shape of the tower the deck and the tension cable as in cable stayed bridges. At o:57 the left main cable is seen oscillating laterally, but because of the rectangular gaps due to the vertical cables holding the deck from the main cable that main cable will be vibrating vertically like the Narrow Tacoma bridge. Those vertical suspension cables should now be accompanied by diagonal cables.
It passed a few weeks after the bridge opened the Napa Quake happened but the bridge still stayed up and the quake was a 6 not the big 9 that destroyed the origonal.
Is the movie about the Bay Bridge collapsing entrapping all those people. Sandy Duncan was in it I haven't seen it since the 90s but would like to see it again. Somebody will post it. Thank you
That's assuming that the quality of the steel used is of sufficient ...There were so many problems in the quality of the welds that U.S engineers had to go to China to find out was was going wrong..Guess we won't know until not next big one..Hope it comes with a warantee
I agree it's been a huge debacle, but even with it's shortcomings and flaws, it's still far safer than the original span. That said, they could have built this far safer, simpler, faster, and cheaper if they had just gone with the original plan for a simple causeway. Unfortunately Oakland bitched and moaned about getting another 'ugly' bridge and demanded an architecturally unique span. Like that's gonna make Oakland seem nicer at this point. Whatever.
I pass this bridge everyday and I remember when they barely opened it a few months later there was already corrosion and rust on most bolts on the bridge qnd since most material came from Chana for that bridge everyone is scared to drive thru the bridge
@IAPETUSGIANTS well as we just learned a few weeks ago with the earthquake on the east coast, they can happen ANYWHERE, so you better watching out, it might hit YOU next!!
Very good. But someone shed light if they will on: how will all the submarine but non-waterproof hardware wrongfully purchased from China (note NOT described as faulty China-derived hardware) which of course water-logged hold up during an 7+ event function or not?
Approach on one side known to have recycle concrete was huge problem in delivery of such material one contractor was taken to court over this was cheaper to buy pocket the profits , this is one problem bridge from word go ,,leaks in main utility rooms and was put together in a somewhat rush by buracrats in Sacramento who wanted it up on time after possible late finish ,it's no miracle bridge by no sense of the word 6 billion dollars for a half ass done rush job ,it's amazing how this video ,they think ,, remember think they have it all answered ,as was a native of bay area for 47 years don't buy into caltrans or any California pipe dream like this ,no such thing as great new design ,,just more bullshit PR from California as usual
Confidence in the new bridge is incredibly low. Moisture caused giant bolts to pop out of place with no earthquake or even traffic causing any stress. I won't ride on the new bridge when it opens.
Why do u hate San Francisco sure we have earthquakes but NYC also has them and before u say "we don't have earthquakes" everywhere in the world has earthquake but they aren't common
The problem with that bridge is it's a cantilever that is self-supporting by compressing the deck but the supporting column is not centered and placed vertical the column should have been leaning 15° towards the island this engineering blender is why the bolts on one side of the Tower or tighter than the other and the bolts were discovered to be defective when attempting to torque them to their maximum specification . The inbalance of this bridge will cause its ballast to be its destruction in an earthquake. For the ballast to balance this span they actually use the bridge section coming from treasure Island as a counterweight. The Bay bridge is nothing but an architectural engineers wet dream. Is the only bridge in my 40-year career that I worked on that I advise people to avoid like the plague because of its horrible structural design. You'll notice in every video about this bridge they never mention the footing of the vertical column supporting at all. The engineers also forgot to mention that if treasure Island move North 1 ft at a 70 to 90° right angle the entire structure will fail.
That thing is a hunk of Chinese made junk. Not to mention the issues with falsified inspection reports and other corruption while it was being built. It started cracking before it even opened. Do they really think it will survive a decent sized quake?
Cool.
Always great to see engineering at it's finest.
This is so scary when you cross that bridge
Damn nature you scary
Ikr
TwistedTornado )
CannedPenguins flipiflapo
thats damn scary.
Watch videos of the earthquake in Japan from the top of skyscrapers. They're remarkably resilient actually, mainly due to the flexibility. The important part is to dampen oscillations, because oscillations can increase in strength during an earthquake and cause structural failure.
I was 6 months old when this video was created
And i was -10 months when this video was created
And I was -65166885516 years when it was made
I'm old
I was negative 12 years old
Wow. I can't believe you posted this in October - and now, half a year later, we actually live in San Francisco! xo, your husband
Look at the date: it was posted three days before the 20th anniversary of the Quake of 1989.
That's why it was posted in October.
Good thing cause it's early 2021 and the Earthquakes have hit all the way around the ring of fire lately. So California is GOING to get one soon.
I got to drive on that new bridge in Watchdog 2.
I drove on that bridge number of time in Watch Dog 2.
I was just on that bridge last week...it very nice and sounds like alot of work went into this
Best simulation Ive even seen! 8D
Glad to know they'll get a great ride before being plunged hundreds of feet to the water.
The new bay bridge opens next week.Hope those new bolts hold up as they had to be replaced before this bridge was even finished.. I'm in Oakland,think I'll take one last drive on the old bridge before they close her down for good,great memories....except when her top 50 foot section collapsed during the 89 quake.Oh well,we're only human right?
it did when the Napa Quake hit it passed the test
So cool!
id scream if i were on that and it was moving
but can it withstand a 9.0
@@shashainnova8951 who tf would wanna fuck the bridge lol
It doesn’t need to California can’t experience a 9.0 earthquake
@@Master-kh6ww shut it g
Anything can happen
really interesting!!!!
I wouldn't have demo'd the old part until October 17, 2024... Loma Prieta 35. I would also have left a small part of it, like a pylon as a memorial to both the victims of the quake and The Miracle on Interstate 880.
The Miracle on I-880 is right up there with The Miracle of Stairway B, a miraculous event on a day otherwise known for a massive tragedy.
Of course, we've still got AT&T Park (if the home of the San Francisco Giants can survive the quakes in "San Andreas", then it's certainly going to survive the next REAL LIFE Bay Area Big One!), the spiritual successor to Candlestick Park (which would also be a good place for a memorial to The Loma Prieta Quake of 1989).
It's called honoring the past while looking to the future at the same time.
Earthquake: Starts
Traffic: *stops* 👁👄👁
Me: bruh get off the bridge haven’t you seen disaster movies 😡🤣
I hope I’m on that bridge in next earthquake. An engineering marvel.
Pleasee dude i am a senior high school student who will make a bridge like this as a thesis. what software did you use in all of this. and how do i test various types of simulation.
nice animation
I don't know either i was born with weird brain or something is wrong with me because I love nature disasters such as tornadoes, earthquakes, tsunamis and volcanoes eruption. Maybe it's something really scary horrifying, terrifying, unbeatable and unbelievable but to me it's something normal. I just want to experience at least one of those nature disasters in my life time. Unfortunately, I'm living in a country where it's literally unaffected by nature disasters. Guess which country is it. What do you think about me? Am I crazy or something else?
Viventhiran Viven unaffected? Speaking of your name: i think we knew it:
It can be:
Vietnam
Finland
Norway
Denmark
I'm the same.
"Engineers didn't think it was possible"...or...."what engineers learned from the quake"....might be heard one day in the future.
Wow. Does anybody know the software they use to simulate that? is that BIM?
cool vid, but what's gonna happen to the second part of it that goes from YB to SF...
Definitely has better safety than that accursed cantilever span. Come on 1930, what were you thinking?
SkyDefender People in the 1930s didn't know much about earthquake.
The cantilever bridge did just fine in the earthquake the problem was the wooden tiles that were driven in the mud sure to off at the bottom of the concrete footings.
The new bridge is a cantilever design that is 10 times inherently more dangerous to structural failures because of its lack of redundancy in the design that is horrible beyond belief.
They are almost done !
A .6 quake? That's less than a 1.0 quake?
Somebody didn't take their happy pills this morning.
ahhh thats nice! :)
Nothing is earthquake-proof; "earthquake-resistance" is the goal of modern engineering. Contrary to the astonishing number of uninformed comments in this stream, known component-manufacturing issues have been or are in the process of being mitigated. Even without mitigation, the new bridge is many times more earthquake-resistant than the old one.
Not going to use this new beauty? Great! More room for me!
For anyone actually interested in facts, they are easily available at various online sites.
Mark Cooper (page1) feliz año nuevo
if we were to have a 8 or a 10, would the Cables would be able to withstand, Or the Bolts that we already had problems with before. or if it were to just collapse like most bridges did in the past disaster?
You would not want to see ether, a 8 would be a disaster & a 10 California would be a island!!
10 Impossible
California will not break off and become an island. smh.
exactly
Only oregon gets earthquakes higher than 7.0
Pretty trick but why did they only replace part of the Oakland Bay Bridge and not the entire bridge?
My Road Tours l
The western suspension portion underwent a seismic retrofit but the eastern part could not be effectively upgraded. For one thing, that part of the bridge was built on wood pilings driven into the bay mud in the 1930's. Not a great foundation.
Having lived there.. I still don't trust "New" innovations on ANYTHING!! "Mother Nature out smarts us. Not the other way around!! Good Luck!! I hope it works..
Why would you not trust these innovations. It has proven to work in Japan for many years. Would you rather not have these seismic precautions?
clever!
If that all true, that's a well built bridge.
don't lie we searched this up
I regret to say that the catenery system that is shown on the bridge have a lot of rectangles (0:58) and a rectangle will change its shape due to the fact that its diagonal is not bounded to create TRIANGLES. So I am afraid the damping of the deck would not be as shown as those blessed vertical cables from the main catenery cable will cause the main cable to develop not only the fundamental but also the harmonic frequencies. The damping cannot come from that cable suspension system but it had to come from the deck which is a little better than the old Tacoma Narrow bridge which has the same cable suspension system. If those suspension cables had additional diagonals or the deck was stayed by cables forming triangles anchored from the deck directly to the pylon or tower then the deck will not vibrate as shown in fact it will be more stable as any oscillation will be canceled by the triangular shape of the tower the deck and the tension cable as in cable stayed bridges.
At o:57 the left main cable is seen oscillating laterally, but because of the rectangular gaps due to the vertical cables holding the deck from the main cable that main cable will be vibrating vertically like the Narrow Tacoma bridge. Those vertical suspension cables should now be accompanied by diagonal cables.
It passed a few weeks after the bridge opened the Napa Quake happened but the bridge still stayed up and the quake was a 6 not the big 9 that destroyed the origonal.
There was no 9.0 earthquake. It was a 6.9 earthquake that destroy the old bridge.
Tests are always done with scale models. There's no way to test the whole bridge, we just have to hope it works lol.
great is it good for a 9.0 or higher? lol
can you do golden gate bridge please?
Tell me more about the longest bridge in korea
@thecarl213 Ehhh, I'd bet my life on the new bridge. As an engineer, my intuition tells me the new one is going to be pretty awesome.
Never late to learn.
woww
Is the movie about the Bay Bridge collapsing entrapping all those people. Sandy Duncan was in it I haven't seen it since the 90s but would like to see it again. Somebody will post it. Thank you
Cool but did u test it lol how do u know dat its earthquake proof ?
Has fishing been confirmed to be.allowed on the.new.bridge?
Wow
Those are some cool safety features. But is this bridge Godzilla proof? Didn't think so.....
so... why the actual bridge is completed but not the connections to the bridge idk
Earthquakes in a nutshell
Won't matter if the quake is big enough...
WE NEED LIKE TSUNAMI DRILLS
OMG yes
Well now im nauseous as hell...
wobble wobble wobble
That's assuming that the quality of the steel used is of sufficient ...There were so many problems in the quality of the welds that U.S engineers had to go to China to find out was was going wrong..Guess we won't know until not next big one..Hope it comes with a warantee
I hate it when I get battered piles.
I saw the golden gate bridge
I agree it's been a huge debacle, but even with it's shortcomings and flaws, it's still far safer than the original span.
That said, they could have built this far safer, simpler, faster, and cheaper if they had just gone with the original plan for a simple causeway. Unfortunately Oakland bitched and moaned about getting another 'ugly' bridge and demanded an architecturally unique span. Like that's gonna make Oakland seem nicer at this point. Whatever.
Earthquake bridge tsnuami
I pass this bridge everyday and I remember when they barely opened it a few months later there was already corrosion and rust on most bolts on the bridge qnd since most material came from Chana for that bridge everyone is scared to drive thru the bridge
That’s been fixed since then but I get how you feel
impossible this span is construction started on 2009
Boy, I sure hope they had a team of Japanese earthquake engineers review this design; they're experts in this field.
Ron Jeremy's voice
Disgruntled, old timey pappy?
@sexyones09 we'll never know
@IAPETUSGIANTS well as we just learned a few weeks ago with the earthquake on the east coast, they can happen ANYWHERE, so you better watching out, it might hit YOU next!!
Very good. But someone shed light if they will on: how will all the submarine but non-waterproof hardware wrongfully purchased from China (note NOT described as faulty China-derived hardware) which of course water-logged hold up during an 7+ event function or not?
@firebert814 haha agreed... they just dont understand lol
Oakland bay bridge earthquake
1:29 if you know what I mean...
lollllll hinge pipe beam
Iris, I'm glad we have structural engineers like you to comment on our civil projects and question the general intelligence of Americans.
🤨
no such thing of a earthquake proof bridge. mother nature wins 100% !
How will the bridge react during a Cat-5 hurricane?
Get a room!
Approach on one side known to have recycle concrete was huge problem in delivery of such material one contractor was taken to court over this was cheaper to buy pocket the profits , this is one problem bridge from word go ,,leaks in main utility rooms and was put together in a somewhat rush by buracrats in Sacramento who wanted it up on time after possible late finish ,it's no miracle bridge by no sense of the word 6 billion dollars for a half ass done rush job ,it's amazing how this video ,they think ,, remember think they have it all answered ,as was a native of bay area for 47 years don't buy into caltrans or any California pipe dream like this ,no such thing as great new design ,,just more bullshit PR from California as usual
🤣🤣🤣🤣🤣🤣🤣🤣🤣
@enno108 Half a year later, I can't believe you're still with me. Love, your wife.
????i
Why do people choose to suicide off the gg
Eurofolk radio.com
Confidence in the new bridge is incredibly low. Moisture caused giant bolts to pop out of place with no earthquake or even traffic causing any stress. I won't ride on the new bridge when it opens.
666th like
oh wait nobody cares..
1:28 demonetized 😂
San Francisco A.K.A worst place to live in the USA.
Blahblahblah14898 no I live in new york . i would rather be poor than be in a earth quake damaged city. so fuck san fransisco and fuck you.
***** New York City is a shit-hole compared to SF and I like NYC and am not a fan of SF or the bay area in general.
Maiq TheLiar So how does a city that is above a fucking fault line better than NYC. "The Big One" is waiting homie.
Blahblahblah14898
Nah. Good luck out of earth's crack.
Why do u hate San Francisco sure we have earthquakes but NYC also has them and before u say "we don't have earthquakes" everywhere in the world has earthquake but they aren't common
The problem with that bridge is it's a cantilever that is self-supporting by compressing the deck but the supporting column is not centered and placed vertical the column should have been leaning 15° towards the island this engineering blender is why the bolts on one side of the Tower or tighter than the other and the bolts were discovered to be defective when attempting to torque them to their maximum specification .
The inbalance of this bridge will cause its ballast to be its destruction in an earthquake.
For the ballast to balance this span they actually use the bridge section coming from treasure Island as a counterweight.
The Bay bridge is nothing but an architectural engineers wet dream.
Is the only bridge in my 40-year career that I worked on that I advise people to avoid like the plague because of its horrible structural design.
You'll notice in every video about this bridge they never mention the footing of the vertical column supporting at all.
The engineers also forgot to mention that if treasure Island move North 1 ft at a 70 to 90° right angle the entire structure will fail.
That thing is a hunk of Chinese made junk. Not to mention the issues with falsified inspection reports and other corruption while it was being built. It started cracking before it even opened. Do they really think it will survive a decent sized quake?
It's a dumb cartoon.
1:29 if you know what I mean...