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Rasolofo, Harilala_ESPA_ING_03 - Thèses malgaches en ligne

Rasolofo, Harilala_ESPA_ING_03 - Thèses malgaches en ligne

Rasolofo, Harilala_ESPA_ING_03 - Thèses malgaches en ligne

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M ELSq1δ p ⎛ =1a1a⎜ −1l4 ⎝ 2⎞⎟⎠M = 1, 5MELUqELSqD’oùELSMq= 18185 N.mD’oùELUMqM = M G + M q= 27277 NmM ELS = 19329 NmM ELU = 28821 NmIV.3.3. Mom<strong>en</strong>t résultantIV.4. Calcul des armaturesb=100Ad=11c=4Figure n°14 : Section de calcul de la dalleCalculons d’abord=MLEUµ2b d σbuIV.4.1. Calcul à l’ELUµ = 0,2108 < µ l = 0,392Alors la section est simplem<strong>en</strong>t armée : A u =Avec β = 1 – 0,4αα = 1,25 x ( 1 − 1 − 2µ )α = 0,299β = 0,880A u = 8,55 cm 2MELUβ d σSA min = 0,23ft 28b d A min = 0,90 cm 2fe69

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