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RE: fem & caissons

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Mark,
Radially oriented spring elements may work but they must also be provided with contact characteristics (elements) such that tension between the soil and pile cannot be developed.

Steve Smith, PE, SE


> ----------
> From: 	Mark D. Baker[SMTP:shake4bake(--nospam--at)earthlink.net]
> Reply To: 	seaint(--nospam--at)seaint.org
> Sent: 	Thursday, May 13, 1999 2:42 PM
> To: 	seaint(--nospam--at)seaint.org
> Subject: 	Re: fem & caissons
> 
> 
> 
> Lanny J. Flynn wrote:
> 
> > I haven't used Risa 3d, but piles can be modeled using horiz springs spaced
> > at say 1ft vertically with the spring stiff based on the the soil mod the
> > geotech gives you (or should give you).
> 
> This is what we are trying, I question how we should deal with the curved
> surface of the round pile. Should all the spring stiff. be the same considering
> the horiz. projected area of the pile or should the spring stiff. be reduced as
> you travel around the 1/2 circumf. of the pile?
> 
> Regards,
> 
> Mark
> 
> 
>