To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
Subject: RE: Distribution Factors for Bridge Structures
From: Brian McDonald <mcdonald(--nospam--at)exponent.com>
Date: Sun, 13 Jun 1999 23:02:39 -0700
If I understand your question correctly, I recommend "Handbook of Frame
Constants" published by PCA. It has most imaginable haunched beam
coefficients tabulated, and demonstrates methods to calculate others.
From: Bill Polhemus [mailto:polhemus(--nospam--at)insync.net]
Sent: Saturday, June 12, 1999 3:26 PM
To: structx(--nospam--at)mLists.net; seaint(--nospam--at)seaint.org
Subject: Distribution Factors for Bridge Structures
Can anyone recommend a reference describing a detailed methodology for
I know that many sources talk about the "grillage method," for example, but
always it seems it has been left up to my imagination just what such a model
I am trying to decide whether it would be better to derive the D.F.s, or
just do a finite element model of the whole bridge and apply the
(non-standard) loading to it to determine the internal forces for design.
The former would, it seems to me, make things simple once you had your
D.F.s, but unless you have D.F.s you can count on, it might be better to do
the latter, even though it means extensive time modeling (especially
applying all the myriad load patters to the model).
Would be interested in hearing some thoughts on this as well.