Vigas - Flexão Simples 5

FLEXÃO SIMPLES

Neste exemplo, será dimensionada a armadura longitudinal e transversal de uma viga submetida a Flexão Simples utilizando como base a Norma Cirsoc-2005, conforme dados abaixo:

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Concreto: H-25 / Aço: ADN420

bw: 20 cm / h: 60 cm

Mu:

TQS = 373,00 kN.mSoftware B = 383,7 kN.mSoftware C = 373,3 kN.m

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Flexão:


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TQSSoftware BSoftware C
As = 20,59 cm²As = 24,15 cm²As = 22,73 cm²
A's = 2,45 cm²A's = 0,0 cm²A's = 2,04 cm²

20,59 cm² ≥ 3,75 cm² → OK!!

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øMn (376,83 KN.m) ≥ Mu (373,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 32,59 tVu = 31,25 tVu = 32,53 t
Vu,design = 23,90 tVu,design = 23,85 tVu,design = 23,70 t

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Ø0,75 → øVn ≥ Vu → 23,90 ≥ 23,90 → OK!!

Área de Aço:

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Espaçamento:

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Øt = 8 mm → Av = 10,00 cm²/m → ø8 c/ 10 cm

    øVn (24,73 t) ≥ Vu (23,90 t) → OK!!


    Vigas - Flexão Simples 4
    Vigas - Flexão Simples 6