Vigas - Flexão com Torção 3

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 = 360 kN.mSoftware B = 394,48 kN.mSoftware C = 367,55 kN.m

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Flexão:


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TQS = 18,52 cm²Software B = 18,09 cm²Software C = 18,74 cm²

18,52 cm² ≥ 18,52 cm² → OK!!
øMn (360 KN.m) ≥ Mu (360,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 23,93 tVu = 23,84 tVu = 23,90 t
Vu,design = 23,93 tVu,design = 20,19 tVu,design = 20,22 t

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Ø0,75 → øVn ≥ Vu → 23,93 ≥ 23,93 → OK!!

Torção:

Tu:

TQS = 6,10 tf.mSoftware B = 6,04 tf.mSoftware C = 6,08 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 = 17,55 cm²/m → ø10 c/ 9 cm


øVn (44,96 t) ≥ Vu (23,93 t) → OK!!


Armadura Longitudinal:

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Vigas - Flexão com Torção 2
Vigas - Cirsoc Ejemplo - Flexão Simples 1