" GTw3rD^wg
Some points you may concern: n
2k&yL+a
<V}^c/c!
1) M-C model, undrained condition, effective stress analysis: ,~!rn}MI<
In this case, the plasticity can be predicted as usual; oM=Ltxv}
Wm5/>Cu,
2)M-C model, undrained condition, total stress analysis: *o/ Q#
)1>fQ9
In this case, there is not effective stress calculation due to no pore pressure generated.
W6&s_ (
=)B@ `"
The total stress analysis plasticity occurs as soon as the total stresses reach the failure QsaaA
MGY
_pX y}D
criterium while with an effective stresses analysis plasticity occurs when the effective stresses .{-&3++WZ
l%aiG+z%6}
reach the failure criterium. X676*;:!.
-! dL
<
The latter is of course more realistic; only the effective stresses determine plasticity, not the water pressures. PKT/U^2X]
wX 3x.@!:
In other words, using total stress analysis is only correct when the calculation is elastic. But this case is not very often in reality. =%4vrY
`
"g)@jqq:>
Suggestion: Try to use effective stress analysis when it is undrained condition (typically, there is option for this in PLAXIS)." "Q:m0P
xb
uZe|%xK$y
"1) M-C model, undrained condition, effective stress analysis: *Ge2P3
In this case, the plasticity can be predicted as usual;" VQr)VU=jb
2)M-C model, undrained condition, total stress analysis: t?1+Yw./em
AeqxH1 %
In this case, there is not effective stress calculation due to no pore pressure generate cG|ihG5)
,FvBZ.4c3=
THESE STATEMENT DO NOT MAKE SENSE TO ME.
