Vigas - Flexão Simples 9

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

Mu:

TQS = 159,0 kN.mSoftware B = 161,3 kN.mSoftware C = 164,9 kN.m

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Flexão:


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TQS = 5,70 cm²Software B = 5,72 cm²Software C = 5,53 cm²

5,70 cm² ≥ 5,11 cm² → OK!!

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øMn (167,81 KN.m) ≥ Mu (159,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 18,90 tVu,design = 11,61 tVu = 17,39 tVu,design = 11,58 tVu = 18,87 tVu,design = 11,60 t

eacaea16320d627a489d6de817affb32.png 7bb367397cb7c88332f5a35676605d1d.png b187cf2ccea23e3728bb2297d136fc06.png a215cea7ff802e95f32aba3c4026ce02.png

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62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

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Ø0,75 → øVn ≥ Vu → 11,61 ≥ 11,61 → OK!!

Área de Aço:

2b3b7b4ef7c57b4fa1acd726ad386f1c.png

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1a5b39d95181673f2a90c0c8c79359af.png1a5b39d95181673f2a90c0c8c79359af.png0,84 ≤ 1,57 → Adotado 4ab3c11a642ded3c352fedae41c99a35.png!!

Espaçamento:

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

    øVn (13,47 t) ≥ Vu (11,61 t) → OK!!



    Vigas - Flexão Simples 8
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