Vigas - Flexão Simples 8

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:

529c8f1a124120f9798a000c8118196b.png

Concreto: H-25 / Aço: ADN420

bw: 20 cm / h: 80 cm

Mu:

TQS = 93,0 kN.mSoftware B = 94,7 kN.mSoftware C = 97,0 kN.m

a26fab7833f04a6f3d80938cd36fafb0.png

Flexão:


7e6603b876370819722b411847cbbdf0.png

b2a74b05e7bdc6836c2d582267c44400.png

b2da984f0152e8fc84377154fdbf177c.png

a562818c994790f4c2ab3d4532b34a25.png

418b517eb3e76077f2b135ddebdc186e.png

aa245b1770c8471968465799249b43e6.png


3e88dbaf76023890abc2abd170d8ae42.png

fe740816edafa563b3b53e3e713af949.png

f33417339eb763865f8ca715235585cf.png

c97f8fc62e05d0ca78fdbbc89c1b4f56.pngc97f8fc62e05d0ca78fdbbc89c1b4f56.png

TQS = 4,36 cm2Software B = 4,38 cm2Software C = 5,04 cm2

4,52 cm² ≥ 4,36 cm² → OK!!

40faf140e37cc611a2558c7f0fa5fb0d.png

øMn (93,23 KN.m) ≥ Mu (93,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 7,85 tVu,design = 5,95 tVu = 7,45 tVu,design = 5,94 tVu = 7,80 tVu,design = 5,90 t

eacaea16320d627a489d6de817affb32.png 7bb367397cb7c88332f5a35676605d1d.png ecbaf4869e7caaf18f5d31d1682cd94a.png a145e8901beefe85b0ab914431b5b9e4.png

87370b15eaad1334ab6010fbbc8f2b1d.png

8bc444dc603f8bbe115bed8dc0f7659c.png

62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

78b2ffb516890ee0e5acd02f2f36a196.png

aeed8849e3372d195f66b0c48b847baa.png

Ø0,75 → øVn ≥ Vu → 5,95 ≥ 5,95 → OK!!

Área de Aço:

bd31fa72f7bf0dff079e322d72d73b9d.png

0def4f3363d977fc79ea39f74f7aa5b5.png

1a5b39d95181673f2a90c0c8c79359af.png1a5b39d95181673f2a90c0c8c79359af.png0,00 ≤ 1,55 → Adotado 4ab3c11a642ded3c352fedae41c99a35.png!!

Espaçamento:

06d1e07ea784adbc04a385a9e9430ab3.png

304ecc57595a0680b3a961255a5953fd.png

1a901bc85f2bb15fc3945303b751a20f.png

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

    øVn (9,96 t) ≥ Vu (5,95 t) → OK!!


    Vigas - Flexão Simples 7
    Vigas - Flexão Simples 9