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RE: Dog bone connection concentrated load and lateral bracing[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: Dog bone connection concentrated load and lateral bracing
- From: Charlie Carter <carter(--nospam--at)aiscmail.com>
- Date: Wed, 15 Dec 1999 08:54:36 -0600
Title: RE: Dog bone connection concentrated load and lateral bracing
As far as minimum distances go, I'm not sure what you mean regarding concentrated load. If you are looking at a transfer girder or something that has a heavy shear induced near the dogbone, it may not be possible to make the reduced beam section (dogbone) work. There's only so much material you can cut away, so the shear amplification of the moment from the hinge location back to the column face may be too large to make the design philosophy (yielding in dogbone, nominal elasticity at column face) work.
As far as lateral bracing, take a look at the tested specimens. There are only a handful that actually used any lateral bracing at all. If you decide to use it, locate it outside the region of the reduced section. The thought behind this is, you don't want to be bolting or welding in kicker angles or other bracing in a region of such high inelastic demand.
From: Elly rejuso [mailto:Erejuso(--nospam--at)rmbyrd.com]
Sent: Tuesday, December 14, 1999 9:30 PM
Subject: Re: Dog bone connection concentrated load and lateral bracing
I am designing a moment frame using the " dog bone connection".
Can anyone tell me the minimum distance of concentrated load and lateral bracing from the plastic hinge location or from the reduced section of the flanges.
Thanks in advance,
Elly D. Rejuso P.E.
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