Vigas - Flexão Simples 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:

7bced743006ec015d981a576478109df.png

Concreto: H-25 / Aço: ADN420

bw: 20 cm / h: 60 cm

Mu:

TQS = 373,00 kN.mSoftware B = 383,7 kN.mSoftware C = 373,3 kN.m

a26fab7833f04a6f3d80938cd36fafb0.png

Flexão:


c7cff8c8840510fa2b4751b9f1c0dc9e.png

ce141854ac96311c54548a88fae65870.png

47854f1048f157880a45586d0e399c3d.png

665514ce8d6bda1881fd92278edab2b0.png

7b3a85f4466e85bb2dbf92d0a29ad528.png

3d9a431018637ccf818e1c0f443af34d.png

454ee17097fe76b255596d00f7d703f9.png

687f16c70fff645c4b0b405bd5b0eb3f.png

32d35192e340a44a12123fecdc2e2e5c.png


3e88dbaf76023890abc2abd170d8ae42.png

2d9bdf9de8d49c0d65043be2879bcf6d.png

0baedf780e3efe5616e2286fc6eaf3e2.png

2efb0392fdd73fa266353d00ea983724.png2efb0392fdd73fa266353d00ea983724.png

TQSAs = 20,59 cm²A's = 2,45 cm²Software BAs = 24,15 cm²A's = 0,0 cm²Software CAs = 22,73 cm²A's = 2,04 cm²

20,59 cm² ≥ 3,75 cm² → OK!!

b779bbfdfa87ccf7e2b8f8ad4f7b9a96.png

øMn (376,83 KN.m) ≥ Mu (373,00 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 32,59 tVu,design = 23,90 tVu = 31,25 tVu,design = 23,85 tVu = 32,53 tVu,design = 23,70 t

eacaea16320d627a489d6de817affb32.png 7bb367397cb7c88332f5a35676605d1d.png cbfaaef077a39ed77e930fd72e314a5d.png 3317df4ebaa0634e948aa4e6e99704f8.png

fa2f9dc7f4fed99e9eb93c28d1fd4bac.png

91bda3c3fc27e63d838512ffb9e894d3.png

62c10ce43d27d61c466867e61c9e123b.png62c10ce43d27d61c466867e61c9e123b.png OK!

20622b9fda594d6a2a7fbfc53aa7b8b2.png

128903397556a68e972c168a6995c507.png

Ø0,75 → øVn ≥ Vu → 23,90 ≥ 23,90 → OK!!

Área de Aço:

7420e0be48c22c0ecef0859473a2838f.png

0def4f3363d977fc79ea39f74f7aa5b5.png

1a5b39d95181673f2a90c0c8c79359af.png1a5b39d95181673f2a90c0c8c79359af.png 9,53 ≥ 1,55 → OK!!

Espaçamento:

06d1e07ea784adbc04a385a9e9430ab3.png

81167b7e65dafa8b94d759c98586e71e.png

b488bfcc8ba9de216a14d0c258be9762.png

Øt = 8 mm → Av = 10,00 cm²/m → ø6 c/ 10 cm

    øVn (24,73 t) ≥ Vu (23,90 t) → OK!!


    Vigas - Flexão Simples 4
    Vigas - Flexão Simples 6