• Author / Uploaded
• Marycel Mendez

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EJEMPLO CALCULO DE LOSA DE CALZADA TABLERO con 5 vigas 9.80 0.40

0.40

9.00

0.90

0.18

0.90 0.10

0.98

1.96

1.96

1.96

1.96

0.98

SECCION TRANSVERSAL TABLERO CALCULO DE LOSA DE CALZADA Datos del Tablero: Ancho total tablero Ancho aceras + defensa Altura aceras Ancho isla central Altura isla central Ancho libre de calzada Numero de vigas Ancho ala superior viga Espesor de la losa calzada Espesor carpeta rodam. Luz volado de calzada Separación entre vigas Peso baranda o defensa Sobrecarga en Aceras Peso Rueda may. (20% ) Impacto Lat. Acera (20%)

A Aa Ha Aic Hic Alc Nv bv e ecr Sv S Pb SCa Pr Plat

= = = = = = = = = = = = = = = =

9.80 0.80 0.00 0.00 0.00 9.00 5.00 0.20 0.18 0.07 0.98 1.96 600 0 8.717 893

mts. mts. mts. mts. mts. mts. und. mts. mts. mts. mts. mts. kg/ml kg/m2 kgs kgs

Materiales: fc' = 250 fy = 4.200 Pc = 2.500 Pasf = 2.200

kg/cm2 kg/cm2 kg/m3 kg/m3

Resultados: Luz de cálculo losa: Scl = S-bv/2

=

1.86 mts.

W pm = ((A*e+Aa*Ha+Aic*Hic)*Pc + Alc*ecr*Pasf + Pb*2)/A

=

714 kg/ml

Mpm = [Wpm*Scl^2/10]*1.3

=

321 kg-mt

Mcv+i = [0.8*((Scl+0.61)/9.74)*Pr*I]*2.17

=

4.989 kg-mt

M Total mayorado = Mpm + Mcv+i

=

5.310 kg-mt

As = 11.88 cm2 As Rep = 121/ÖS (max. 67%)

=

86 %

Usar Cab. # 6 a 20 cms.

As rep = 7.94 cm2

Usar Rep. # 5 a 20 cms.

Desea volver al Capítulo ?

CALCULO DEL VOLADO DE CALZADA Datos del Tablero: Punto aplicación P al apoyo X = 0.23 mts. Ancho Efectivo E = 1.327 mts. Impacto en losa I = 30 %

Resultados: Luz de cálculo volado: Scv = Sv-bv/4

=

M pm = [(e*Scv^2/2+Ha*Aa/2*(Scv-Aa/4))* *Pc + Pb*(Scv-.2)+(Scv- Aa/2)^2*ecr*Pa]*1.3 =

0.93 mts.

676 kg-mt

Mcv+i = [(Pr*X+Plat*Ha+Aa*SCa* *(Scv-Aa/4)^2/2)*I/E]* 2.17

=

4.262 kg-mt

M Total mayorado = M pm + M cv+i

=

4.938 kg-mt

As = 10.96 cm2.

Usar Cab. # 6 a 20 cms.