Vigas - Flexão Simples 6

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 = 60,0 kN.mSoftware B = 60,8 kN.mSoftware C = 62,2 kN.m

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Flexão:


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TQS = 3,36 cm²Software B = 2,79 cm²Software C = 5,04 cm²

3,39 cm² ≥ 3,36 cm² → OK!!

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øMn (96,01 KN.m) ≥ Mu (60,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 5,05 tVu,design = 3,83 tVu = 4,79 tVu,design = 3,82 tVu = 5,00 tVu,design = 3,80 t

eacaea16320d627a489d6de817affb32.png 7bb367397cb7c88332f5a35676605d1d.png ee542ba96f4714f238e644050942ec18.png 7e330f17cb0214beed1d72e66ca5a6a3.png

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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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0def4f3363d977fc79ea39f74f7aa5b5.png

1a5b39d95181673f2a90c0c8c79359af.png1a5b39d95181673f2a90c0c8c79359af.png 0,00 ≤ 1,55 → Adotado 4ab3c11a642ded3c352fedae41c99a35.png!!

Espaçamento:

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

    øVn (13,44 t) ≥ Vu (3,83 t) → OK!!


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