Base Plate welded to Pipe Design

[cgstrucg]

Hello,

I have a base plate which is welded to a pipe post and I can't find any good reference to analysis the base plate for the compressive loads. Can someone please guide me how to analyze the base plate for that purpose. Thanks a lot.

 

[JedClampett]

If it's just small compressive loads, figure out you bearing pressure and apply it to the plate as a distributed load. If the distance to the circular member is throwing you, just assume it is a square section with dimensions .6 times the OD.

 

[racookpe1978]

Are you trying to figure out the compressive load through the sq baseplate to the concrete?
The maximum compressive load the concrete surface will see from its surface at the baseplate down to the bottom of the concrete to the soil?
Or the compressive load on the vertical ?? "pipe" (round piece of metal) that is welded to the sq baseplate?

 

[WARose]

See AISC steel Journal Article 'Design of Pipe Column Base Plates Under Gravity Load' (by: Thomas Sputo), 2nd Quarter 1993. There were a number of follow up (errata) articles as well. It uses a yield line/virtual work method for the plate design.

Me personally, I think it's just faster to check a couple of failure (bending) planes with the bearing pressure. (You get a slightly thicker plate though since you'd be using a elastic method with elastic allowables.)