Chunil
Geotechnical
- Mar 15, 2001
- 31
CPTU dissipation test is a good way to evaluate Ch(coeff. of horizontal direction consolidation) value.
But i think(almost everybody may agree..)it is also hard to interprete because often it is hard to reach 50% dissipation .
o.k anyway i want to know in the eqns of Houlsby and Teh(1988) i.e, T* = (c_h*t)/[r^2* sqrt(Ir)]
"r" value is radius of cone and is 35.7mm that is written in "CPT in Geotechnical Practice " (by T. Lunne and P.K Robertson and J.J.M Powell)
But, cone's Diameter is 35,7mm not radius..
Is it a mis printing or my misunderstood ?
Let me know~
And Teh(1987)'s another eqns that is
c_h = (m/M)^2*sqrt(Ir)*r^2
In that eqns "r" is 35.7mm or 35.7/2 mm ???
Let me know~
Thank u~
But i think(almost everybody may agree..)it is also hard to interprete because often it is hard to reach 50% dissipation .
o.k anyway i want to know in the eqns of Houlsby and Teh(1988) i.e, T* = (c_h*t)/[r^2* sqrt(Ir)]
"r" value is radius of cone and is 35.7mm that is written in "CPT in Geotechnical Practice " (by T. Lunne and P.K Robertson and J.J.M Powell)
But, cone's Diameter is 35,7mm not radius..
Is it a mis printing or my misunderstood ?
Let me know~
And Teh(1987)'s another eqns that is
c_h = (m/M)^2*sqrt(Ir)*r^2
In that eqns "r" is 35.7mm or 35.7/2 mm ???
Let me know~
Thank u~
