Notched Beam Bearing Design Failure Modes

[JohnnyB_]

Hello -

I am designing a notched W-beam that is bearing on a large W-girder. The notched beam, as shown in the attachment, is not carrying a very large load. Based on my review I have analyzed the shear and moment of the reduced section due to the notch. I have included a web stiffener even though the web buckling calculations did not require one.

I have reviewed multiple threads previously about this issue but I couldn't come to a clear conclusion on all of the failure modes that should be analyzed. Are there additional failure modes that I am overlooking? My detail and design calcs are attached for clarification.

Thanks in advance.

 

[JAE]

I've typically required a curved cut at the re-entrant corner.

 

[haynewp]

I believe you are missing some checks on the development of the reinforcing back into the web. There are some other things in Design Guide 2 that are intended for reinforced WF web openings, but might be worth looking at for this notch scenario for similar applicability. Fillet weld symbol is backwards.

 

[JohnnyB_]

Thanks for the feedback guys.

 

[lexpatrie]

The stiffener on the W14 makes sense to me as it precludes rotation out of plane. Is a W8 impossible here to avoid all the cutting and welding?

Radius at the cut, yeah.