Vigas - Flexão Simples - Viga Continua 5

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:

ce74e14ff94197538b4b7da5d27c5cb9.png

Concreto: H-25 / Aço: ADN420

bw: 20 cm / h: 80 cm


TQS:Software B:Software C:
Mu+ 29 kN.mMu+ 27 kN.mMu+ 30,5 kN.m
Mu- 55 kN.mMu- 54,9 kN.mMu- 54,3 kN.m

a26fab7833f04a6f3d80938cd36fafb0.png

Flexão+:


40e3a5678ae17333decea2ad7d80a7b8.png

2e343e2313ae9e56162a0cff699d81a8.png

85bfb92433607105f8f414e368a3a563.png

8240460839ffc3a870705a653fe912ea.png

d4d8fc4a9526492914b7f1033f33efc3.png

6db6d6d57802ef4c97687f599505b942.png


3e88dbaf76023890abc2abd170d8ae42.png

fe740816edafa563b3b53e3e713af949.png

f33417339eb763865f8ca715235585cf.png

aa4d066615b46c244c0c95afeec2809c.pngaa4d066615b46c244c0c95afeec2809c.png 7b70fe3b4c2d064641a7061ada610d4d.png


TQS = 3,36 cm²Software B = 1,23 cm²Software C = 5,17 cm²

3,39 cm² ≥ 3,36 cm² → OK!!

8378c84f5bbd65cde3bf2640b662fffc.png

øMn (96,23 KN.m) ≥ Mu (29,00 KN.m) → OK!!

Flexão-:


a46709b1e84c3ad93f984c733054344c.png

5a4b280aa629de85024fa05f2fb0c7e3.png

d02da6ffb1bf3eb8d0363d16aef7f94a.png

828d2860caf09738983fa70fc8b80544.png

5849544d371ab563ae12d487dd7d5b71.png

23f4a9c0e4fc99fa2b5fd801a5ed51c6.png


3e88dbaf76023890abc2abd170d8ae42.png

f3b53f81027d94ffe165c31d0c9b2d1f.png

f100560361f2af27b77d0056e48364b5.png

996c199fd4c4bdadd307eae68179ab80.png996c199fd4c4bdadd307eae68179ab80.png


TQS = 2,56 cm²Software B = 2,51 cm²Software C = 5,17 cm²

3,14 cm² ≥ 2,56 cm² → OK!!

2bd4764300a39d208999747c3a2b81e0.png

øMn (89,31 KN.m) ≥ Mu (55,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 5,73 tVu = 5,48 tVu = 5,70 t
Vu,design = 3,83 tVu,design = 3,98 tVu,design = 3,80 t

eacaea16320d627a489d6de817affb32.png

7bb367397cb7c88332f5a35676605d1d.png

8c08b5c4d4937317b06dc51a85c72e9c.png

7e330f17cb0214beed1d72e66ca5a6a3.png

87370b15eaad1334ab6010fbbc8f2b1d.png

8bc444dc603f8bbe115bed8dc0f7659c.png

6d20f3c5ee771006d2076b2f056e03e2.png

e7683ecf6b4d63baead21e5cdc6e45c2.png

204aaef8e18e9a324818eddc0760d739.png

Ø0,75 → øVn ≥ Vu → 3,83 ≥ 3,83 → OK!!

Área de Aço:

f0baa3c29739fd258cdf1d506b0f5997.png

0def4f3363d977fc79ea39f74f7aa5b5.png

87a5bc4f233056b7d82876bfdfa7e18f.png

Espaçamento:

06d1e07ea784adbc04a385a9e9430ab3.png

304ecc57595a0680b3a961255a5953fd.png

e39b9d14b405e9d90765c5751b7a7f4e.png

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

    øVn (13,50 t) ≥ Vu (3,83 t) → OK!!


    Vigas - Flexão Simples - Viga Continua 4
    Vigas - Flexão Simples - Viga Continua 6