I am attempting to use the Joint Code check functionality of RAM Frame, and am a bit confused about implemenation, so any help would be appreciated.
From my readings of the Frame anlysis, and steel post-processor manuals/technical manuals, I though I had deduced the following:
1-Ignoring rigid end zones (in the frame/general criteria) would ignore panel zone deformation, and therefore frame stability has not been considered so AISC360-05 eqn. J10-9 would be used for panel zone shear
2a-Including effects at 0% reduction would not consider deformation and be in the same insctance as ignoring the effects.
2b-Including effects at 100% would consider deformation, and therefore J10-11 should be used.
This does not appear to be the correct understanding however, as situations 1 and 2b produce the same effect. Does anyone have any more info about this code interpretation?
Thanks.
I would like to add that AISC would generally say that rigid end zones should not be used in the analysis of steel frames.
www.aisc.org/.../f2da0d72-c80d-4c04-9726-c905d349615e.pdf
The result sounds correct to me.
In other words, if you ignore rigid end zones (case 1), then a centerline analysis is performed, which is equivalent to assuming that panel zone deformations were considered in the analysis. Similarly, if you use a partial rigid end zone, one with some reduction (case 2b), at least some panel zone deformation was considered in the analysis. So for either case the program evaluates equations J10-11 and J10-12 with ASD 360-05 code.
It is only when a full, unreduced rigid end zone in considered (case 2a) that we can say panel zone deformations were not considered in the analysis. Here the program checks J10-9 and J10-10.