Vigas - Flexão Simples 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

Mu:

TQS = 59,0 kN.mSoftware B = 61,0 kN.mSoftware C = 59,2 kN.m

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Flexão:


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TQS = 3,76 cm2Software B = 3,79 cm2Software C = 3,71 cm2

4,02 cm² ≥ 3,76 cm² → OK!!

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øMn (82,99 KN.m) ≥ Mu (59,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 3,36 tVu,design = 2,80 tVu = 3,28 tVu,design = 2,80 tVu = 3,33 tVu,design = 2,80 t

eacaea16320d627a489d6de817affb32.png 7bb367397cb7c88332f5a35676605d1d.png 3b5df05632db6674a3df6d17bc88ebab.png ec9bb86ad877b30aa433d9c39b500817.png

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62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

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0966df311a1afee89ac6250acdd0f4fb.png37,92 t

Ø0,75 → øVn ≥ Vu → 2,80 ≥ 2,80 → OK!!

Área de Aço:

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0def4f3363d977fc79ea39f74f7aa5b5.png

1a5b39d95181673f2a90c0c8c79359af.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 (2,80 t) → OK!!


    CIRSOC-2005
    Vigas - Flexão Simples 2