Vigas - Flexão com Torção 2

TORÇÃO

Neste exemplo, será dimensionada a armadura longitudinal e transversal de uma viga submetida a Flexão Simples combinada com torção 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 = 322 kN.mSoftware B = 353,34 kN.mSoftware C = 328,9 kN.m

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Flexão:


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TQS = 16,40 cm²Software B = 16,36 cm²Software C = 16,41 cm²

16,40 cm² ≥ 16,40 cm² → OK!!
øMn (322,00 KN.m) ≥ Mu (322,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 22,39 tVu = 22,30 tVu = 22,37 t
Vu,design = 22,39 tVu,design = 18,65 tVu,design = 18,71 t

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Ø0,75 → øVn ≥ Vu → 22,39 ≥ 22,39 → OK!!

Torção:

Tu:

TQS = 4,40 tf.mSoftware B = 4,34 tf.mSoftware C = 4,38 tf.m

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Fissuração:

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Armaduras Transversal:

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Considerando 2 ramos pela largura:

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Espaçamento:

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Øt = 10 mm → Av = 14,36 cm²/m → ø10 c/ 11 cm


øVn (39,75 t) ≥ Vu (22,39 t) → OK!!


Armadura Longitudinal:

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Vigas - Flexão com Torção 1
Vigas - Flexão com Torção 3