Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

moment connection

Status
Not open for further replies.

Lutfi

Structural
Joined
Oct 20, 2002
Messages
1,039
Location
US
I am in the process of designing a moment connection for wide flang beam. I have designed many bolted connections. However, this one is going to be welded, with about 1 to 2 inch gap between falnges and webs.

Does nay one one have a good reference and or design example to share? You input is greatly appreciated.
 
Lutfi,

Could you clarify your question?
Is it a beam-to-column moment connection?
Where is the 1 to 2 inch gap?
Why is the gap so big?
If the gap is going to filled with the weld, how is the stresses produced by the cooling weld are going to be mitigated?

Regards
 
the connection is along the beam span (not beam to column). The gap need to be that large so that the frame can be adjusted to meet strict tolerances. The gap between flanges and webs will remain after the splice plates are welded. It is estimated that the gap will be in the middle of the span (very short span). My intent is to weld the new splice plates to the flanges and webs with fillet welds.
 
Lutfi,

The AISC's Manual of Steel Construction, ASD, on page 4-100 shows a beam-to-column welded moment connection. I assume you could use that detail, slightly modified, to make the splice connection.



 
Further on in the AISC Manual of Steel Construction, ASD, on page 4-129 are examples of welded moment splices. I would think that the use of a backing bar, as shown, would solve your gap problem. The backing bars would have to carry the tension and compression forces due to the moment. Also you would need a shear splice across the web.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top