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modeling stiffeners on base plate

modeling stiffeners on base plate

modeling stiffeners on base plate

(OP)
Does anyone know of any software, literature, etc. that provides information on modeling stiffeners on base plate? There is a 2" gap between the bottom of the base plate and top of concrete. Any suggestion/comments is appreciated.

RE: modeling stiffeners on base plate

Why is there a gap? Is this a light pole style base plate where the base plate is supported by nuts?

RE: modeling stiffeners on base plate

Sounds like (possibly) 2 different issues. As far as modeling the base plate goes: I cannot think of any. However I would think doing so would be pretty straight forward (could probably be done with hand calculations).

As far as the gap goes: that would be a cantilever from the top of concrete to the bottom of the baseplate (assuming you are talking about transferring the shear load from the column into the concrete). Sometimes the bending is too much for the anchor rods and people have to use a shear lug or bigger rods.

RE: modeling stiffeners on base plate

I don't know of much published specifically for base plates. It may be out there, but I don't know about it.

There are some design examples about design of stiffeners for end plate moment connections AISC design guide 4 and 16, I believe. Essentially just looking at the b/t ratio of the stiffener and making sure it is not prone to local buckling.

RE: modeling stiffeners on base plate

This is not exactly what you describe, but it may give you an idea.

RE: modeling stiffeners on base plate

I believe the GTSTRUDL base plate module can be used for FEM modeling of base plates with stiffeners. I think it also can handle gaps below the base plate.

RE: modeling stiffeners on base plate

Look for Cook et al, there are some reports between 90's and 00's about this topic

RE: modeling stiffeners on base plate

I don't usually use stiffeners between columns and base plates. It's normally less costly to use a thicker base plate.

Dik

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