Column Flange Bending (Yield Line Analysis)

[iponom]

Looking through the "Yield Line Analysis of Bolted Hanging Connections" by Thomas S. Dranger, I found that the flange web is subject to 5 "mechanisms" of bending. The main difference is that in some of the cases a portion of the flange is considered to be "clamped".

If I was to consider a beam to column flange, double angle connection, with an axial force, which of the 5 cases would be the closest to the actual bending in the column flange? Which would be the most conservative? In what situation would I know that the portion of flange is "clamped"?

Thanks!

 

[JoshPlumSE]

I'm going off of memory here. But, I could swear that I saw an example like this in the LRFD 2nd edition connection manual (silver book).

Have looked looked there yet?

 

[iponom]

The material on this subject given in LRFD 2nd edition connection manual is in relation to "double concentrated force created by the FR or PR moment connection"...

I am trying to analyze an axial double angle connection, where the double angles are bolted/welded at the beam web and bolted at the column flange at a specific gage, which is similar to hanger connections. In this condition all of the axial force is transmitted into the column flanges along the length (not width) of the flange (with prying action present as well).