Re: stiffness of a pile


"Bob Morrison" <SpamFighter@xxxxxxxx> schreef in bericht
news:MPG.1e78927bd142b497989aa7@xxxxxxxxxxxxxxxxxxxxxxxxxx
In a previous post Alan Johnson wrote...
I'm translating some documents from German to English and have come
across a slight problem. The German document talks about the
"Dehnsteifigkeit" of piles, literally, the strain stiffness of piles.
But I cannot satisfactorily verify this on the web. The notation used
for this is EJ. I'm afraid I don't much more context, it is only
mentioned briefly. No, wait, a foundation slab is being designed and if
it located on weak soil, some piles may be required.


Alan:

It sort of sounds like they are trying to describe the axial shortening
(strain) that occurs in the piles when they are loaded.

I think, but am not positive, that for a structure that is partially
supported by soil and partially by piles, you would want a pile that has
the same strain characteristics as the soil so that they deflect downward
together.

--
AFAIK, combined systems (piles and soil) are not used. Bob is right when he
states it is about axial shortening. Normal notation would be EA and not EJ.
Is it a recent document you are translating, as in teh old times, different
notations may have been used. I also foudn a reference to Dehnsteifigkeit on
this site:

http://www.haw-hamburg.de/rzbt/dankert/fwtips.html


.

Relevant Pages