All Welded End plate connection??
All Welded End plate connection??
(OP)
I am looking at an existing structure requiring rework for expansion. The connection in question is between a W14X48 beam coming in on a 30deg angle to a W16x65 girder. As this is an existing structure we'll be field welding at heights. The best connection I can come up with is a welded/welded end plate. If I don't provide a return at the top of the plate, but do at the bottom do I have enough flex in the plate to provide a pinned connection??? Any better ideas?? I can see how I'm going to get a mag drill in there to bolt the end plate and I also don't fully trust the existing conditions enough to try to fab a double bent plate connection at that angle.
Thanks!
Thanks!






RE: All Welded End plate connection??
RE: All Welded End plate connection??
RE: All Welded End plate connection??
RE: All Welded End plate connection??
RE: All Welded End plate connection??
1) You'll be introducing a torsion in the girder due to the relatively large eccentricity of this connection. So, you want to make sure the girder can accommodate it or that deck and other beam connections could eliminate it.
2) I'm not a welder, but that looks to me like a challenging weld to make. So, you might check with a fabricator / erector to make sure that it is feasible.
3) What about a bent plate connection bolted (or welded) to the girder web? I would think this would be a little more flexible. And, it wouldn't have as much field welding.
RE: All Welded End plate connection??
RE: All Welded End plate connection??
W14x48 isn't all that heavy, can you make a W12 work which buys you room for a seated beam angle connection that is welded to the girder and bolted to the W12? This gives them quite a bit of flexibility in regards to the skew angle. Also, almost always better to upsize a column or beam and avoid stiffener plates. Also a W12 would avoid the bottom cope and along with being a heavier member may resolve that issue. Although after looking at your detail again maybe it is the top cope and the long unsupported web that is causing shear/buckling issues with the web.
RE: All Welded End plate connection??
www.FerrellEngineering.com
Providing fabrication and erection efficient structural design of connections. Consulting services for structural welding and bolting.
RE: All Welded End plate connection??
www.FerrellEngineering.com
Providing fabrication and erection efficient structural design of connections. Consulting services for structural welding and bolting.
RE: All Welded End plate connection??
Weld the plate (1/2'' x 10'' x 12'') that is shown in section E-E to the beam (I would made a longer one). Add two stiffener plates (not thicker plantes than web material) ahead and two ones behind of the beam. Remain double plate on the girder.Add perpendicular stiffeners beneath of it. Drill and bolt it. Calcuation procedure is shown in most structural books.