Muro Contencion 4n4x6h

DISEÑO DE MUROS EN VOLADIZO DATOS

t1

ht

hp

2.10 T/m3 2.40 T/m3 32 ° 210 Kg/cm2 4200 Kg/cm2 2.88 Kg/cm2 2.20 T/m2 4.00 m 1.5 2

f = tgf

f = 0.625 Usar f = 0.600 Como el Angulo del talud = 0° fö æ Ka = tg 2 ç 45 - ÷ Ka = 0.307 2ø è hO =

SC

> 0.6

ho = 1.048

gS

t2

hz

Ƴs = Ƴc = Ø= fc = fy = ϭt = S/C = hp = FSD = FSV =

B2

B

DIMENSIONAMIENTO DE LA PANTALLA

B1

t 1 = 0.30 m 3 2 é h h ù Mu = 1.8 × ê Ka × g S × P + Ka × g S × hO × P ú 6 2 û ë

Usando :

22.12 T.m

ρ = 0.004

w = r×

fy fc

w=

0.08

Mu f × b × fc × w × (1 - 0.59 × w )

d=

40.00 cm

➱

t2=

45.00 cm

Ø= b=

d=

Mu =

0.9 100

t 2 = d + 5cm

Usar t2= 0.45 m d = 0.40 m

VERIFICACION POR CORTE é ù (h - d )2 Vud = 1.8 × ê Ka × g S × P + Ka × g S × hO × (hP - d )ú 2 ë û

Ø=

0.85

Vc = 0.53 × fc × b × d Si hay traslape en la base

2 Vce = Vc 3

Vud = 11.9064 T

Vud/Ø =

14.01 T

Vc =

30.72 T

>Vud/Ø

OK !

Vce =

20.48 T

>Vud/Ø

OK !

2 Vce = Vc 3

DIMENSIONAMIENTO DE LA ZAPATA

h Z = t 2 + 5 × cm

hz =

0.50

m

h=

4.50

m

B1 ≥

1.81

m

B1 =

1.89

m

B2 ≥

0.26

m

B2 mín =

0.50

m

B=

3.00

m

Usamos hz= 0.50 m

h = hP + hZ

Ka × g S B1 ³ FSD h 2 × f ×g m

Ƴm =

2.00 T/m3

B2 B f FSV ³ × - 1 h 3 FSD 2 × h B2 mín = hZ

➱

B = B1 + B2

Usamos B1= 2.50 m

Usamos B2= 0.50 m

VERIFICACION DE ESTABILIDAD

A1 A2 A3 A4

AREA

P.E.

PESO

x

P.x

1.20 0.30 1.50 8.20

2.40 2.40 2.40 2.10

2.88 0.72 3.60 17.22

0.80 0.60 1.50 1.98

2.30 0.43 5.40 34.01

N = 24.42

E A = Ka × g S × hO × h + Ka × g S ×

MA = Ka× g S × hO ×

FSD =

FSV = A4

EA =

E2

f ×N EA

MR MA

FSD = 1.53

> 1.5

OK !

FSV = 2.53

>2

OK !

>e

OK !

< σt

OK !

E1

A3

PRESIONES SOBRE EL TERRENO

e=

q1 = 2

N B

MR - MA N

Xo =

1.04

m

B - Xo 2

e=

0.46

m

B/6 =

0.50

m

q1 =

15.56 T/m2

q2 =

0.72

é 6×eù ê1 ± B ú ë û

T

MA = 16.64 T.m

A2

Xo =

9.57

h2 h3 + Ka× g S × 2 6

MR = 42.15

S/C

A1

h2 2

T/m2

DISEÑO

DISEÑO DE LA PANTALLA b = 100 d = 40 t1 = 30 t2 = 45 fc = 210 fy = 4200 Ø = 0.9

cm cm cm cm Kg/cm2 Kg/cm2

Asmín = 0.0018 × b × t1

Asmín =

5.40 cm2

Asmín = 0.0018 × b × t 2

Asmín =

8.10 cm2

Mu =

22.12 T.m

Corte de 1 fierro alterno # fierro S usado 4 0.125

As = 15.32 cm2

➱

# fierro 4

@ 0.08 m

ρ' = 0.0013 ρmín = 0.0018

REFUERZO HORIZONTAL

As = 0.002 × b × t

Arriba

# fierro

@

As = 6.00 cm2 2/3As = 4 cm2 1/3As = 2 cm2

4 3

0.32 m 0.36 m

As = 7.50 cm2 2/3As = 5 cm2 1/3As = 2.5 cm2

4 3

0.25 m 0.29 m

As = 9.00 cm2 2/3As = 6 cm2 1/3As = 3 cm2

4 3

0.21 m 0.24 m

Intermedio

Abajo

DISEÑO DE LA ZAPATA Ws =

8.40 T/m

q1 = 15.56 T/m

Wz =

1.20 T/m

q2 = 0.72 T/m

ZAPATA ANTERIOR

Wu = 1.8 × q1 - Wz × 0.9 Mu =

Wu = 26.93 T/m

Wu × L2 2

Mu =

3.37 T.m

As =

2.24 cm2

# fierro 4

@ 0.57 m

d = 41.00 cm

Asmín = 0.0018 × b × d

As mín= 7.38 cm2

4

0.17 m

ZAPATA POSTERIOR q = 10.139 T/m

q' = 10.86 T/m

Wu = (Ws + Wz ) × 1.5 Mu = (Wu - q2 ×1.5)×

Wu =

L2 L2 - q'×1.5 × 2 6

14.4 T/m

Mu = 16.58 T.m As = 11.04 cm2

# fierro 4

@ 0.11 m

# fierro 4

@ 0.14 m

Refuerzo Transversal Astemp = 9.00 cm2