Vigas - Flexão Simples 7

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 = 41,0 kN.mSoftware B = 41,8 kN.mSoftware C = 41,2 kN.m

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Flexão:


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TQS = 3,36 cm2Software B = 1,91 cm2Software C = 5,17 cm2

3,36 cm² ≥ 1,90 cm² → OK!!

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øMn (96,27 KN.m) ≥ Mu (41,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 4,91 tVu,design = 3,01 tVu = 4,51 tVu,design = 3,03 tVu = 4,87 tVu,design = 3,00 t

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62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

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Ø0,75 → øVn ≥ Vu → 3,01 ≥ 3,01 → OK!!

Área de Aço:

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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 (13,47 t) ≥ Vu (3,01 t) → OK!!


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