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 UNIVERSITÉ TECHNIQUE DE CONSTRUCTIONS DE BUCAREST  Faculté dʼIngénierie en Langues Étrangères  Filière Francophone État-limite de service   Mâitrise de la fissuration Application par C. Ruşanu  1 Maîtrise de la fissuration   Application Données: b w  = 300mm, h w =600mm, béton C25/30, Acier S500, Classe structurale S4, Classe d’exposition XC2, Moment de service M ser =153kNm, charges de longue durée, Moment à ELU M Ed =253.13 kNm, l’enrobage nominal c nom =35mm a) Déterminez le moment ultime;  b) Déterminez les contraintes dans les armatures: a.    avant la fissuration ;  b.    si le moment est égal à M ser . c) Vérifiez le contrôle de la fissuration sans calcul direct; d) Déterminez l’ouverture calculée des fissures. Corrigé a) Le moment ultime Resistances des matériaux    =    = 25 1.5  = 13.33     =    = 500 1.15  435  420 600 300 50

Application Maitrise de La Fissuration

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