Prying with stiffeners??
Prying with stiffeners??
(OP)
I have a connection design which is effectively a beam with welded end plate connecting to a column column by a 4 bolt group which is set within the beam flanges.
I have two questions relating to prying in this connection.
1 - Do I have to consider prying of the end plate?
2 - If I add full depth web stiffeners to the column do i still check it for prying and if so how?
From the literature I've read it only takes account of unstiffened flanges and makes no comment on stiffened flanges.
I have two questions relating to prying in this connection.
1 - Do I have to consider prying of the end plate?
2 - If I add full depth web stiffeners to the column do i still check it for prying and if so how?
From the literature I've read it only takes account of unstiffened flanges and makes no comment on stiffened flanges.






RE: Prying with stiffeners??
If you have an axial tension in the beam, then you would need to do a prying check.
Column web stiffeners will not help with prying of the beam end connection.
DaveAtkins
RE: Prying with stiffeners??
RE: Prying with stiffeners??
DaveAtkins
RE: Prying with stiffeners??
RE: Prying with stiffeners??
I have subsequently found some literature in Butterworths Structural Steelwork Connections under the local out of plane bending of plates supported on more than one side (Sect 7.7.4). It breaks the plate into overlaid cantilevers (2 sides) or a cantilever and an encased beam (3 sides). In it it suggests to check prying for each individual 'virtual' cantilever and use the maximum force calculated. It proposes to neglect the encased beam. Is this a fair enough consideration.
The arrangement is a 'Goalpost' pipe support sitting on top of 2 beams that span existing steelwork. This connection is actually between the foot of the goalpost and the top of the supporting beams. It is a moment connection but only very small, I'd rather consider it as a moment connection than to brace the frame for two reasons. 1 to simplify fabrication and 2 to make it look "right". The frame is only 600mm tall and made out of 203UC. a brace on this will frankly look stupid.
Thanks again for the help.