LA METHODOLOGIE DU CALCUL
Présentation - CFBR
Présentation - CFBR
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Le critère de rupture<br />
Sols : COULOMB<br />
τ = C' + σ'. tgφ'<br />
Roches :HOEK & BROWN<br />
⎛<br />
σ<br />
⎜<br />
⎜<br />
⎜<br />
⎜<br />
⎜<br />
⎝<br />
−<br />
1<br />
σ<br />
2 ⎞<br />
⎟<br />
= m.<br />
⎟<br />
⎟<br />
3<br />
⎟<br />
⎟<br />
⎠<br />
σ<br />
'<br />
3<br />
+ s.<br />
⎛<br />
⎜<br />
Joints et enrochements : BARTON<br />
⎛<br />
⎜<br />
τ = σ '. tg Jrc.log<br />
Jcs<br />
⎜<br />
+φ<br />
⎜<br />
⎜<br />
⎜<br />
⎜<br />
b<br />
⎝<br />
c<br />
σ<br />
σ<br />
σ<br />
⎜<br />
⎜<br />
⎝<br />
c<br />
⎞<br />
⎟<br />
⎟<br />
⎟<br />
⎟<br />
⎟<br />
⎟<br />
⎠<br />
⎞<br />
⎟<br />
⎟<br />
⎟<br />
⎠<br />
2<br />
→s≤1
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