Design of Steel Haunch Bolted End Plate Moment Connection
Design of Steel Haunch Bolted End Plate Moment Connection
(OP)
Looking for advice on the design of the attached connection. Steel haunch bolted to column, supporting crane rail beam. See pic. I can't find a design example anywhere in AISC specific to this configuration. It's basically an end-plate bolted moment connection, but I need to design all elements of this including the haunch. Thanks for any advice.






RE: Design of Steel Haunch Bolted End Plate Moment Connection
In both cases, the top two pairs of bolts because the bracket plate is reinforced there by the bracket flange.
Michael.
"Science adjusts its views based on what's observed. Faith is the denial of observation so that belief can be preserved." ~ Tim Minchin
RE: Design of Steel Haunch Bolted End Plate Moment Connection
Maybe I have done these wrong before in the past, but the last one I did, I had a WF outrigger shop attached to the column with CJP welds at the flanges and webs. My loads were pretty high though. What is the purpose of bolting the connection, fatigue?
RE: Design of Steel Haunch Bolted End Plate Moment Connection
SteelPE - Yes, fatigue is a concern. Isn't it always with crane rail structures? That's not a bad idea, though. I take it you added stiffeners to the column at the outrigger flanges, and just designed it like a FR moment connection?
RE: Design of Steel Haunch Bolted End Plate Moment Connection
With that load, I suspect paddington "use the top pair of bolts" is not going to work, but I may be wrong.
RE: Design of Steel Haunch Bolted End Plate Moment Connection
It should read "At 131 kips I would be using a separate crane column, not trying to bracket off the building column as you have shown."
Also, what is the size of your crane?
RE: Design of Steel Haunch Bolted End Plate Moment Connection
Quando Omni Flunkus Moritati
RE: Design of Steel Haunch Bolted End Plate Moment Connection
RE: Design of Steel Haunch Bolted End Plate Moment Connection
Also, you have a 50T crane with an end reaction at the bracket of 106 kips...... seems a little light to me but again, I'm not aware of your situation.
RE: Design of Steel Haunch Bolted End Plate Moment Connection
Quando Omni Flunkus Moritati
RE: Design of Steel Haunch Bolted End Plate Moment Connection