Curved Ramp

[Wazk]

Can anyone please explain how curved ramp is analyzed and designed. Like what is the load path? Are these short walls acting like beam supporting ramp?
Please find below as an example

 

[dik]

Really nice... the columns would likely have small beams/drops from rail to rail... fifty years back, I'd have used Reynold's concrete book for analysis for a curved beam... today, it lends itself to a FEM study. Probably in China.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[KootK]

Are these short walls acting like beam supporting ramp?

I strongly suspect that to be the case. The walls support the slab vertically and the slabs, in turn, stabilize the beams rotationally and help to resolve the beam torsion.

 

[Wazk]

But, what support the walls? Looks like it is quite a long curved 'beam'.

 

[MegaStructures]

It's a long beam... but It's a pretty tall beam as well

“The most successful people in life are the ones who ask questions. They’re always learning. They’re always growing. They’re always pushing.” Robert Kiyosaki

 

[WARose]

Horizontally curved beam.....lends itself to FEA.

 

[KootK]

But, what support the walls? Looks like it is quite a long curved 'beam'.

Dik may well be right, as he often is, about cantilevered beams coming off of the columns to pick up the ramp beams at intervals. I don't see that in the photo but that may just because of the angle at which it was taken.

 

[dik]

When I was younger, I'd have given my left one to do this type of structure... lovely...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[CrabbyT]

Looks like a big concrete spring. Neat! FEA seems like a reasonable approach for this. Or you might look at the AISC Design Guide for Curved Beams if you're trying to do it by hand. I'd guess those columns have cantilevered beams that support the ramp as it curves around, and that the cantilevered beams probably support a curved steel frame that's been infilled with concrete.

When I was younger, I'd have given my left one to do this type of structure... lovely...

...and now that you're older, you'd give your left one to not do this type of structure, eh?

Funny how experience does that. I always wanted to engineer an entire building until the day I actually did. Definitely gained more appreciation for architects and for PEMB vendors after that project.

 

[dik]

Don't think so... just be a lot more work... and not as sharp as I once was... I'm about halffast, now...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik