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旧 2009-09-08, 05:18 PM   #1
huangyhg
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默认 design data on gusset and flitch plates

design data on gusset and flitch plates
hello,
can someone recommend literature that contains design information, ie. moments, shear, etc., on steel gusset plates and flitch plates when applied to existing wood members.
thanks,
john g.

except the seller provides data i would calculate from first principles.
nailing can give you what on tension and shear.
the gussets nowadays you can very well model in fem for an initial imperfection then add p delta and if non large deflection it is not buckling.
never was necessary so, it was customary use some width at the free edge if triangular and use k=0.75 for kl when checking for buckling. i is still current practice. seating plates in bending you can dimension m/w or m/s or so.
ishvaag, to suggest modelling a gusset plate in fe is purely irresponsible. moreover, it wasn't even suggested that there exist some imperfection in the existing gusset plate, yet you run on about imperfections and p-delta, why?! if you can't answer the question, then don't. i'm sure there will come an appropriate time or a question when you can plug your useful knowledge of finite elements and mathcad.
qshake i am sorry to notice you may be a bit angry with me due to our different technical perceptions. i just comment what i think may be proper, not just exactly what is asked for, and i have seen others in the forum do the same. in this case tabulated data i can't provide, yet at least i indicate how i technically would proceed...of course more by k=0.75 than modelling imperfections...and in the end i think not such thing to deserve this a bit harsh comment. humble that my knowledge may be, i must stand to it.
it saddens me a bit because i feel you really stand far more advanced than me in structural knowledge, and so i can't see very well why you feel uncozy on the use of off the shelf fem for every application they may be used for...there are excellent modelling programs and they ease -as they can- much the burden of the structural designers, so i encourage its use for whichever the thing our imagination guides us.
the initial imperfection modelling thing for example, for a pony truss better than for this case, may be an expedient way of contrasting whichever tabulated info on the pony truss i have in another way, and to proceed to direct design/check of the members that in other way will be more cumbersome, er, inefficient...and precisely one of the things i am more interested in (see if 2 opinions coincide or not, and be efficient).
have my best wishes in any case, qshake.
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