HSS TENSION MEMBER-HANGER
HSS TENSION MEMBER-HANGER
(OP)
looking to discuss design of HSS used as hanger for underhung crane rail support. HSS welded to plate; bolted connection to lower rail upper frame.
Thanks
Thanks
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HSS TENSION MEMBER-HANGER
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RE: HSS TENSION MEMBER-HANGER
Dik
RE: HSS TENSION MEMBER-HANGER
I was hoping to review the steps for the analysis and or find a reference for this detail/calculation.
Thanks
RE: HSS TENSION MEMBER-HANGER
1. Use four (4) threaded rod hangers sized to carry runway reaction.
2. I used a knee brace (angle, of tube or pipe) to carry the longitudinal reactions due to impact and traction.
3. I use, as required, a brace (angles work real well) to brace the runway laterally.
They point I was taught about these types of connections, you want them to float! Making the connections rigid is not preferable. This is due to dynamics of moving cranes. Of course variations of these connections are acceptable as long as they are structurally sound, economical and what the fabricators are accustomed to seeing.
I also recommend that you call local crane fabricators and pick their brains on how they done it in the past. Additionally, most crane manufactures will give you hand as far as the details are concerned.
I hope this helps.
Regards,
Lutfi
RE: HSS TENSION MEMBER-HANGER
Dik
RE: HSS TENSION MEMBER-HANGER
While most of the time engineers consider a four (4) bolted base plate as a pinned connection, I maintain that it has a percentage of fixity. This fixity should be analyzed.
Regards,
Lutfi
RE: HSS TENSION MEMBER-HANGER
Thanks