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Truss Bridge - HLMR retrofit
- Thread starter justhumm
- Start date
bridgebuster
Active member
Something doesn't look right with your sketch labels. In a typical cantilever truss, one would expect the cantilever span to be on the left with the suspended span hanging from the vertical. Could you post an elevation view?
justhumm,
Take a look at the first presentation in this video. It is about a project involving pin and hanger replacement at the junction of cantilever-suspended spans. You may get some useful ideas that may be applicable to your rehab project.
Take a look at the first presentation in this video. It is about a project involving pin and hanger replacement at the junction of cantilever-suspended spans. You may get some useful ideas that may be applicable to your rehab project.
- Thread starter
- #4
@ bridgebuster:
what I posted were just conceptual sketches that someone else created, so I can't (and wouldn't) trust them as bible verse.
...plus this is a really weird bridge.
@ EQguys:
Thanks for the link! Now I have something to do this weekend.
Happy Labor Day, all!
what I posted were just conceptual sketches that someone else created, so I can't (and wouldn't) trust them as bible verse.
...plus this is a really weird bridge.
@ EQguys:
Thanks for the link! Now I have something to do this weekend.
Happy Labor Day, all!
msquared48
Structural
What happens with this joint in a seismic event?
Seems questionable to me without some form of movement limiting venue as it would lead to a loss of vertical bearing and collapse.
Mike McCann, PE, SE (WA)
Seems questionable to me without some form of movement limiting venue as it would lead to a loss of vertical bearing and collapse.
Mike McCann, PE, SE (WA)
bridgebuster
Active member
@justhumm - are you free to identify the bridge? In the AISC presentation the one relevant to your situation is the first one up.
@EQguys - thanks for the link; interesting presentations.
- Thread starter
- #7
@msquared48
At this point, I have no idea what happens to the joint. That's why I am hoping to stumble over a project that actually used this sort of retrofit.
Conceptually, I THINK the "safety pin" that was shown on the sketch is meant to limit the movement.
@bridgebuster
No, I am not at liberty to divulge the bridge identity, right now.
I just watched the first minute or two of the video. I'm going to watch the rest of it later tonight or tomorrow. I was actually able to find the bridge plans for that project on MDOT's website. It's not exactly what I was hoping for, but might make good food for thought...
[URL unfurl="true"]http://sp.mdot.ms.gov/Contract%20Administration/DesignBuild/MDOT%20Project%20No%20BR001501120106487301000%20US%2084%20Pin/Forms/AllItems.aspx[/url]
[URL unfurl="true"]http://sp.mdot.ms.gov/Contract%20Administration/DesignBuild/MDOT%20Project%20No%20BR001501129106736301000%20Westbound/Previous%20Project%20%E2%80%93%20Bridge%20Plans.pdf[/url] (100+ MB file)
At this point, I have no idea what happens to the joint. That's why I am hoping to stumble over a project that actually used this sort of retrofit.
Conceptually, I THINK the "safety pin" that was shown on the sketch is meant to limit the movement.
@bridgebuster
No, I am not at liberty to divulge the bridge identity, right now.
I just watched the first minute or two of the video. I'm going to watch the rest of it later tonight or tomorrow. I was actually able to find the bridge plans for that project on MDOT's website. It's not exactly what I was hoping for, but might make good food for thought...
[URL unfurl="true"]http://sp.mdot.ms.gov/Contract%20Administration/DesignBuild/MDOT%20Project%20No%20BR001501120106487301000%20US%2084%20Pin/Forms/AllItems.aspx[/url]
[URL unfurl="true"]http://sp.mdot.ms.gov/Contract%20Administration/DesignBuild/MDOT%20Project%20No%20BR001501129106736301000%20Westbound/Previous%20Project%20%E2%80%93%20Bridge%20Plans.pdf[/url] (100+ MB file)
bridgebuster
Active member
@justhumm - Thanks for the link to the bridge plans.
- Status
