Vigas - Flexão Simples 4

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 = 132,0 kN.mSoftware B = 136,1 kN.mSoftware C = 132,5 kN.m

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Flexão:


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TQS = 6,54 cm²Software B = 6,66 cm²Software C = 6,36 cm²

8,04 cm² ≥ 6,54 cm² → OK!!

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øMn (159,94 KN.m) ≥ Mu (136,10 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 11,57 tVu,design = 8,48 tVu = 11,09 tVu,design = 8,46 tVu = 11,53 tVu,design = 8,40 t

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62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

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Ø0,75 → øVn ≥ Vu → 8,48 ≥ 8,48 → OK!!

Área de Aço:

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1a5b39d95181673f2a90c0c8c79359af.png1a5b39d95181673f2a90c0c8c79359af.png 0,78 ≤ 1,55 → Adotado 4ab3c11a642ded3c352fedae41c99a35.png!!

Espaçamento:

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Øt = 6 mm → Av = 2,00 cm²/m → ø6 c/ 28 cm

    øVn (10,66 t) ≥ Vu (8,48 t) → OK!!


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