Vigas - Flexão com Torção 1

TORÇÃO

Neste exemplo, será dimensionada a armadura longitudinal e transversal de uma viga submetida a Flexão Simples combinada com torç utilizando como base a Norma Cirsoc-2005, conforme dados abaixo:

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Concreto: H-25 / Aço: ADN420

bw: 40 cm / h: 60 cm

Mu:

TQS = 187 kN.mSoftware B = 205,7 kN.mSoftware C = 194 kN.m

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Flexão:


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TQS = 9,10 cm²Software B = 9,15 cm²Software C = 9,12 cm²

9,10 cm² ≥ 9,10 cm² → OK!!


øMn (187,00 KN.m) ≈ Mu (187,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 13,08 tVu = 12,84 tVu = 13,32 t
Vu,design = 13,08 tVu,design = 10,77 tVu,design = 10,70 t

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0966df311a1afee89ac6250acdd0f4fb.png0966df311a1afee89ac6250acdd0f4fb.png75,47 t

Ø0,75 → øVn ≥ Vu → 13,08 ≥ 13,08 → OK!!

Torção:

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TQS = 2,72 tf.mSoftware B = 2,71 tf.mSoftware C = 2,69 tf.m

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Fissuração:

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Armaduras Transversal:

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Considerando 2 ramos:

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Espaçamento:

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Øt = 8 mm → Av = 5,56 cm²/m → ø8 c/ 18 cm


øVn (23,98 t) ≥ Vu (13,08 t) → OK!!


Armadura Longitudinal:

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Vigas - Flexão Simples - Viga Continua 6
Vigas - Flexão com Torção 2