Russian Bridge Went Crazy!

All Russia is sitting puzzled near their TVs looking on the… wobbling bridge. This phenomena is taking place in on of the Russian towns. The bridge stands across the Volga river and people say that there are absolutely no technical reasons why it should behave like that. It stayed normal for a long time but now it went crazy without any reasonable reason – there were no earthquakes or strong winds in the area, however I bet you’ve never saw anything like that, when a heavy concrete bridge paved with a good deal of road surface dances like a soft rubber ribbon. Here is the video too.

update: second video has been added

45 thoughts on “Russian Bridge Went Crazy!”

    • Read:
      http://en.wikipedia.org/wiki/Mechanical_resonance

      One likely explanation is that wind is producing a rolling, cyclical pressure on the bridge. Slowly the movement becomes more pronounced until you have ‘mass-in-motion’. Ultimately, as other folk have pointed out, the bridge should fail as each of these episodes should weaken the structure.

  1. Echos of the Tacoma Narrows Bridge…bet they will find something missing if they look closely, and now it is resonating nicely.

      • Yeah me too.
        Maybe it’s the river current causing oscillation in the bridge columns (pillars) and then into the bridge deck. ???
        Strange, very strange.

        Is it still up?

        I would think it would not last too long dancing around like that!

        • It’s actually from the wind. Listen to it in the video. I used to live in Gig Harbor Washington, where the Tacoma Bridge is. That one galloped because the of the fast wind moving over around the bridge and creating lift life a plane’s wing. The 2nd Tacoma Narrows bridge was designed to let air pass through the bridge.

  2. Just look at the water. You can see that the wind is nice ans strong almost constant speed.
    Just as it happened in USA. The wind will cause that bridge deck resonate like this.

    I’m not brigde engenier , But I’ve watched History channel and also a show called Modern Marvels “engineering failures” 🙂

  3. “absolutely no technical reasons why it should behave like that”

    Perhaps it’s because the support beams are evenly placed and the bridge surface is flexible enough to allow a stationary wave to be created. If the wind makes the bridge resonate on the bridge’s natural frequency you get mechanical resonance. You don’t need a lot of wind for that. It’s like pushing the swing on a children playground at the right moment.

    • Yes, Pjotr is right. I study in technical university and Tacoma Narrows incident was one of the examples in Fourier Analysis course. Resonance (swinging) is caused by a strong wind. There are no other reasons for swinging but support pilars are maybe too evenly placed. (The bridge has been built too well 🙂 ). I’m not sure but I remember something that swinging is not gonna stop and the bridge gonna fall.

    • The bridge is acting like an airplane wing. The wind flows across it and it wants to take flight but can’t because it’s attached to the upright concrete posts in the river. If the bolts underneath the road give way….it’s history. They need to add some sheets of metal to deflect/nullify the wind away from the roadbed.

  4. That is a damn good bridge to stay in one piece with all that movement. I think I’d be a little nervous driving over it, at least until it is inspected.

  5. hello, my name Vladislav. I am construction worker who build this bridge. Reason it wobble on old bridge lives prostitutes and drug people. We know about this so we don’t care. Plus Timofeich bring bottle of premium cognac from Armenia so we finish it first.
    God bless US and thank you for democracy to entire world. Where would we be without your democracy?

  6. Harmonic resonance. Small synchronized forces can create large oscillations; the same process is believed to cause rogue waves. http://en.wikipedia.org/wiki/Resonance

  7. looks pretty fake to me, in the second video you can see from a side view that the concrete or steel I-beam, whatever it is, is condensing and expanding. waves can be sent through concrete and asphalt, but the rock doesn’t move like that.

  8. Elite Tecnologicaparece muito falso para mim, no segundo vídeo você pode ver uma vista lateral que o concreto ou o aço I-beam, seja ele qual for, é de condensação e expansão. ondas podem ser enviados através de concreto e asfalto, mas a rocha não se move assim.

  9. Mr. Silverstein just purchased bridge last week and took out HUGE insurance policy, now this happens….hmmmm.

  10. Easy – natural frequency of the bridge. Every material is essetially a spring. just taes a lot more force. if you hit the natural frequency or on of its octaves, each energy burst adds to the deflection motion of the bridge. And waterways naturally have wind currents, due to topograpy and temperature difference over bodies of water.

    Best way t fix it – park a few 50 tonne trucks on it and change the mass of the thing.

  11. ” there are absolutely no technical reasons why it should behave like that.” lol there quite is, as others told above already:) same thing happened long time ago with Tacoma bridge, the winds resonance was the same as the bridge’s own resonance and that’s it (does not require strong wind)this is the reason why soldiers must NOT step to the same rhythm when crossing a bridge.
    they teach about this stuff on Physics lessons some places))

  12. obvious fake, i noticed it by looking at the concrete by the rail on the side, its getting inflated deflated not wobbling. just a cheap video editing trick.

  13. On May 25 the bridge was reopened for regular traffic and everything is back to normal.

    Bridge’s aerodynamics is gonna be studied in the wind tunnel in order to make counter-flutter adjustments to the structure.

  14. second video shows side view and the black horizontal supports are moving to show it was not photoshopped…that mount of wind is quite enought to set up a resonance…

  15. That is what you called the “Bridge Mirage” a naturally occurring optical phenomenon in w/c light rays are bent to produced a displaced image of a nearby object or the bridge.
    The “wobbling effect” is caused by the “refraction” of light to the hot air above the bridge surface. Our vision interprets the images of the bridge in a “wavelike” motion that also corresponds to the hot air rising above the surface of the bridge. That can only be seen during the hot sunny days.

  16. This is called natural resonance. The wind is making the bridge to resonate at the bridges natural resonanse frequince. Poor engeneering…

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