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1
- #1
Imagineer
Structural
- Dec 18, 1999
- 157
In response to ramezkamel's question in the previous thread.
A good example of what happens when the strand is cut or broken is the pedestrian walkway collapse at a Racetrack in North or South Carolina. I don't remember if the bridge was pre or post stressed but I don't think that matters. ENR ( reported on it in May(?). IIRC, the Charleston, SC paper had some very good articles on what happened, etc.
Basically, the strand broke; the load was transferred to the other strands, exceeding their yeild strength; they stretched; the bridge buckled in the middle; about 10 seconds later it came to rest on the freeway below. It was not an explosive collapse but a slow (relatively) stretching of the other cables until the halves formed a V. Obviously, without the steel we would have had lots of little pieces of rubble instead of the intact halves.
[sig]<p> Imagineer<br><a href=mailto: > </a><br><a href= > </a><br> [/sig]
A good example of what happens when the strand is cut or broken is the pedestrian walkway collapse at a Racetrack in North or South Carolina. I don't remember if the bridge was pre or post stressed but I don't think that matters. ENR ( reported on it in May(?). IIRC, the Charleston, SC paper had some very good articles on what happened, etc.
Basically, the strand broke; the load was transferred to the other strands, exceeding their yeild strength; they stretched; the bridge buckled in the middle; about 10 seconds later it came to rest on the freeway below. It was not an explosive collapse but a slow (relatively) stretching of the other cables until the halves formed a V. Obviously, without the steel we would have had lots of little pieces of rubble instead of the intact halves.
[sig]<p> Imagineer<br><a href=mailto: > </a><br><a href= > </a><br> [/sig]
