Vigas - Flexão Simples - Viga Continua 3

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


TQSMu+ 77 kN.m / Mu- 141 kN.mSoftware BMu+ 77,3 kN.m / Mu- 142,2 kN.mSoftware CMu+ 72,5 kN.m / Mu- 131,3 kN.m

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Flexão+:


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TQS = 3,76 cm²Software B = 3,73 cm²Software C = 3,71 cm²

3,76 cm² ≥ 3,76 cm² → OK!!

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øMn (82,99 KN.m) ≥ Mu (77,00 KN.m) → OK!!

Flexão-:


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TQS = 7,02 cm²Software B = 7,20 cm²Software C = 6,74 cm²

8,04 cm² ≥ 7,02 cm² → OK!!

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øMn (159,94 KN.m) ≥ Mu (156,67 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 8,91 tVu,design = 7,70 tVu = 8,85 tVu,design = 7,82 tVu = 8,71 tVu,design = 7,50 t

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62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

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Ø0,75 → øVn ≥ Vu → 7,70 ≥ 7,70 → OK!!

Área de Aço:

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1a5b39d95181673f2a90c0c8c79359af.png1a5b39d95181673f2a90c0c8c79359af.png0,35 ≤ 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 (7,70 t) → OK!!


    Vigas - Flexão Simples - Viga Continua 2
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