la teoria di Rankine
la teoria di Rankine
la teoria di Rankine
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UNIVERSITA’ DEGLI STUDI DI FIRENZE<br />
DIPARTIMENTO DI INGEGNERIA CIVILE<br />
Sezione geotecnica<br />
Teoria <strong>di</strong> <strong>Rankine</strong><br />
Effetto del<strong>la</strong> coesione<br />
σ<br />
S<br />
2 ⎛ π φ'<br />
⎞ ⎛ π φ'<br />
⎞<br />
= γ ⋅ Z ⋅ tan ⎜ + ⎟ + 2 ⋅ c' ⋅tan⎜<br />
+ ⎟ =<br />
⎝ 4 2 ⎠ ⎝ 4 2 ⎠<br />
1 2<br />
( Z)<br />
= S<br />
P,1<br />
+ S<br />
P,2<br />
= 2 ⋅ c'<br />
⋅ K<br />
P<br />
⋅ Z + ⋅γ<br />
⋅ Z ⋅ K<br />
2<br />
'<br />
h,p<br />
P<br />
Z(<br />
S<br />
P<br />
)<br />
=<br />
S<br />
P,1<br />
⋅<br />
Z<br />
+ SP,2<br />
2<br />
S ( Z)<br />
P<br />
⋅<br />
2<br />
3<br />
⋅ Z<br />
⋅<br />
γ ⋅ Z ⋅ K<br />
P<br />
Z/2<br />
P<br />
+<br />
2 ⋅ c' ⋅<br />
2 c’ K<br />
p<br />
K<br />
P<br />
2/3 Z<br />
Z<br />
S’ (1)<br />
P<br />
S’ (2)<br />
P<br />
σ’ (Z)<br />
hp<br />
Diffusione delle tensioni – Fondamenti <strong>di</strong> Geotecnica<br />
Corso <strong>di</strong> Laurea in Scienze dell’Ingegneria E<strong>di</strong>le A.A. 2005/2006 17/31