Correlation between drained/undrained stiffness and Eoed?

[ac4u2nv]

dear all
I have a gdr which has undrained stiffness Euv=500cu
and drained stiffness Ev=300cu

and likewise for horizontal stiffness
Euh=1000cu
Eh' = 750 cu

i dont have any Eoed values for use in geo 5 modules - is there any correlation between the two?
this is for london clay btw.


thank you

Ash

 

[EireChch]

A drained stiffness of 300Cu is ambitious for London Clay. Typically 130 x Cu is adopted. Refer to C790 for embedded retaining wall design. That has recommendations for stiffness

 

[geotechguy1]

London Clay must be just about the most tested in the world, surely you can find an article with a correlation?

 

[ac4u2nv]

unfortunately i havent -any thoughts?

 

[LRJ]

The oedometric Young's modulus (E_oed) is just the constrained modulus (M). Supposing you want an elastic modulus (which I presume is the case given the large coefficients others have pointed out), and it is for a homogenous isotropic material, you derive M from your other stiffnesses using Poisson's ratio.