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Truck driver waits for rescue inside the dangling cab of a semi-truck after a bridge collapse in China's Guizhou province. (i.imgur.com)

submitted 5 days ago* (last edited 5 days ago) by [email protected] to c/[email protected]

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[–] [email protected] 2 points 4 days ago (1 children)

Steel wires in the same plane (ie horizontal anchoring) as the horizontal segments could hold up even a single segment?

I wasn't aware they are there, how are they called so I can learn more?
I've had a quick look at some schematics & didn't find anything.
Also afaik tensioned steel wires (prob not just on bridges) arent allowed to be hidden (at least in Europe) to allow for inspection.

[–] [email protected] 3 points 4 days ago (1 children)

Well, they seem to exist. I recalling a news article where a pylon of a bridge broke, and the segments were held together by such a cable. It didn't leave a usable bridge, but at least nothing big and more important nobody fell down.

And whether they were hidden or not, I cannot give you an answer, but I think they could be accessible in the innards of the segments corpus, which in turn must be accessible anyway for inspection.

[–] [email protected] 4 points 4 days ago* (last edited 4 days ago)

Was it a proper viaduct like this one (tho this is a medium one, with roadways separated completely into two "bridges") or a much smaller one?

I'll look into it when I have more time.
(Tho the more I think about it the more I see a structurally unsound cable connecting the top pieces as a liability - it could be the cause for the collapse of the whole bridge instead of just the two sections in one & three on the order bridge ... and if it could support the road then why not just beef up the cable & not use supports? ... it might just not be possible)