Vigas - Flexão Simples - Viga Continua 1

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


TQS: Mu+ 14 kN.m / Mu- 26 kN.m Software BMu+ 14 kN.m / Mu- 25,7 kN.mSoftware CMu+ 13 kN.m / Mu- 25,3 kN.m

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Flexão+:


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TQS = 2,56 cm2Software B = 0,86 cm2Software C = 3,84 cm2

2,56 cm² ≥ 0,88 cm² → OK!!

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øMn (65,69 KN.m) ≥ Mu (14,00 KN.m) → OK!!

Flexão-:


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TQS = 1,63 cm2Software B = 1,58 cm2Software C = 3,84 cm2

2,36 cm² ≥ 1,63 cm² → OK!!

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øMn (49,72 KN.m) ≥ Mu (26,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 2,59 tVu,design = 2,03 tVu = 2,54 tVu,design = 2,06 tVu = 2,56 tVu,design = 2,00 t

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62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

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Ø0,75 → øVn ≥ Vu → 2,03 ≥ 2,03 → 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 = 2,00 cm²/m → ø6 c/ 28 cm

    øVn (10,66 t) ≥ Vu (2,03 t) → OK!!


    Vigas - Flexão Simples - Balanço 3
    Vigas - Flexão Simples - Viga Continua 2