corbel design help

[engrnmc]

Hi I am currently trying to design a a tower column for my suspension bridge overhanging to a platform, so to support the column I'm thinking of putting it on top of the corbel, but my worry is i might be missing something, or maybe there is a better approach in designing it. (DESIGN CODE : ACI)

Hope someone could enlighten my concern.

thanks

 

[hokie66]

A drawing or sketch would help in understanding your problem.

 

[engrnmc]

please see attached picture, thanks

 

[jayrod12]

Why not place the bridge pier directly below the columns? It's going to need to be one hell of a corbels to deal with suspension bridge tower loads.

 

[engrnmc]

but would it be possible to place a column on top of a corbel? would there be any restrictions? or would it be more better to design a cantilever deep beam as the base support of the column?

 

[KootK]

You can do what you've proposed do long as the numbers can be made to work. Whether you think of it as a corbel or a deep beam, strut and tie design will be appropriate.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

 

[dcarr82775]

I think the corbel provisions of ACI fall apart when the corbel extends beyond the supporting member as in your sketch. I would look at strut and tie like KootK suggested. It isn't really a corbel, and not a cantilever beam. Think how it could fail and reinforce it accordingly. Can you just make the supporting pier wider so you don't have that 'double' cantilever?