Hi
You must have the soil data in order to calculate the kx,ky and kz values
1 you can have the ks subgrade modulus from your soil data
or
2 if you think about the posible reactions involved :
the (horizontal) kx and ky are the passive soil values
To be conservative try to use Ko values for a first approach
because the Kp values need more displacements in order to be effective
The Kz values can be assigned to the internal pile nodes (see the file send by Artur)
those values varies with depth and for each soil layer
Kz=Ka*Sz*tan(j)*m
Sz = gamma soil*h
j= internal friction angle
m=2*pi*r*tl
tl=layer thicknes
(sorry no symbol font avalilable)
assigning a unique Kz value for all the nodes the reactions can you mislead to interpret the results
and the Rz reaction at the tip of the pile must be also wrong.
