Vigas - Flexão Simples - Viga Continua 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: 80 cm


TQSMu+ 29 kN.m / Mu- 55 kN.mSoftware BMu+ 27 kN.m / Mu- 54,9 kN.mSoftware CMu+ 30,5 kN.m / Mu- 54,3 kN.m

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Flexão+:


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TQS = 3,36 cm²Software B = 1,23 cm²Software C = 5,17 cm²

3,39 cm² ≥ 3,36 cm² → OK!!

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øMn (96,23 KN.m) ≥ Mu (29,00 KN.m) → OK!!

Flexão-:


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TQS = 2,56 cm²Software B = 2,51 cm²Software C = 5,17 cm²

3,14 cm² ≥ 2,56 cm² → OK!!

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øMn (89,31 KN.m) ≥ Mu (55,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 5,73 tVu,design = 3,83 tVu = 5,48 tVu,design = 3,98 tVu = 5,70 tVu,design = 3,80 t

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62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

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Ø0,75 → øVn ≥ Vu → 3,83 ≥ 3,83 → OK!!

Área de Aço:

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1a5b39d95181673f2a90c0c8c79359af.png1a5b39d95181673f2a90c0c8c79359af.png0,00 ≤ 1,55 → Adotado 4ab3c11a642ded3c352fedae41c99a35.png!!

Espaçamento:

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Øt = 6 mm → Av = 1,60 cm²/m → ø6 c/ 35 cm

    øVn (13,50 t) ≥ Vu (3,83 t) → OK!!


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