RE: L-Pile Analysis[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: L-Pile Analysis
- From: "Sherman, William" <ShermanWC(--nospam--at)cdm.com>
- Date: Sat, 28 May 2005 11:03:10 -0400
If it is "output", it seems to me that the reaction would be in load per unit length of pile. If it were "input", it likely would be a spring constant 'k' - but that would imply a constant spring value. I believe that L-pile uses P-Y curves which involve a varying spring value with magnitude of deformation.
I sometimes use a computer model with springs uniformly spread along the length of the drilled pier to obtain an approximate lateral pile analysis. I vary the spring constant to bracket potential shears and moments on the pile. This is not as accurate as L-pile, but it seems that if lateral forces are not too high and deformations are limited this should provide a reasonable approximation of pier loads.
William C. Sherman, PE
From: Garner, Robert [mailto:rgarner(--nospam--at)moffattnichol.com]
Sent: Thursday, May 26, 2005 12:53 PM
Subject: RE: L-Pile Analysis
Arvel, I totally agree about using "black box" solutions, so I'm also analyzing the piles manually as a reality check. And consulting with knowledgible engineers here.
From: Arvel L.
Williams, P.E. [mailto:awilliams(--nospam--at)gwsquared.com]
If soil, - constant for lateral resistant k. (Spring constant i.e. pounds resistance for inches deflection at that point on pile)
Don't recommend that you use L pile or any lateral load analysis software without understanding what the output means and how to establish the proper boundary conditions. You can get some real bad output.
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