Limit of skin frictions
Limit of skin frictions
(OP)
I am trying to gather information about the maximum unit skin friction for piles.
Prakash and Sharma (1990)suggested fs<=1 tsf. I also read somewhere that fs should stop increasing from 10D~20D depth.
Bowles (1996) only says that fs should be considered but didn't say how.
Coduto (2001) didn't mention limiting fs at all.
Any more reference on this topic?
Thanks.
Prakash and Sharma (1990)suggested fs<=1 tsf. I also read somewhere that fs should stop increasing from 10D~20D depth.
Bowles (1996) only says that fs should be considered but didn't say how.
Coduto (2001) didn't mention limiting fs at all.
Any more reference on this topic?
Thanks.





RE: Limit of skin frictions
http://www.fellenius.net/papers/171%20Critical%20D...
RE: Limit of skin frictions
RE: Limit of skin frictions
RE: Limit of skin frictions
Side friction fs (ultimate) increases with depth, and can be much larger than 1 tsf for CIDH, drill displacement, and driven piles.
In addition to Fellenius, many other texts cover pile capacity, including very common and accessible texts: 1996 Terzahgi-Peck-Mesri, Bowles, Coduto, and NAVFAC 7.2 (to name a few).
All of these provide alpha (su based) and beta (effective stress based) methods to calculate pile capacity.
RE: Limit of skin frictions
RE: Limit of skin frictions
RE: Limit of skin frictions
The coefficients have been updated through the years since the initial publishing, but you can get an insight of the method in the following link:
http://www.geologismiki.gr/Documents/CPeT-IT/HTML/...