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(4-3 )<br />

* Condition TB<br />

aS = PIA - (P*e)/s; - M/S;<br />

aS = (m*POmax*e) /A - (m*POmax*e) /Si - M/S; 2: 0t<br />

(4-4 )<br />

Lorsque la section critique est dans une zone de moments<br />

de<br />

flexion négatifs les 4 exigences d'état de contrainte nous<br />

permettent d'écrire:<br />

* Condition TT<br />

0 0 ; = PolA - (PO*e)/Si - Mo/S; 2: 00t<br />

(4-5 )<br />

* Condition CT<br />

00s = PolA + (Po*e)/Ss + Mo/Ss s 00e<br />

(4-6 )<br />

* Condition CS<br />

PIA - (p*e)/S; - M/S;<br />

(m*POmax)/A - (m*Pomax*e)/Si - M/S; s Oc (4-7 )<br />

* Condition TS<br />

aS PIA + (P*e)/Ss + M/Ss<br />

as = (m*POmax)/A + (m*Pomax*e)/Ss + M/Ss 2: 0t page 47 Chapitre 4

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