Calibrating Plaxis with DeepSoil

Hi,

Highly appreciate if someone can share possible solution.

I am trying to calibrate Plaxis with DeepSoil. DeepSoil gives higher PSA at the surface.

Plaxis gives lower PSA at the surface

I suspect that material input in Plaxis do not correspond with DeepSoil. 

One thing in particular I am not sure, is G/Gmax in Deep Soil.

Material used in Plaxis is HS small

I assume G0ref in Plaxis is G max in Deep Soil

G= E'/1-2v = 20000/2(1+0,2) = 8333,3 kN/m2

G/Gmax = 8333,3/180000=0,046

Inserting this small G/Gmax, DeepSoil will give way higher PSA.

Any one has idea what is the correct G/Gmax or how to calculate this from material input in Plaxis?


Thank you