4-zapata Combinada Sin Voladizo(armando Sueldo C.).xlsx

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UNIVERSIDAD PERUANA LOS AND

FACULTAD - INGENIERIA CI

ZAPATA COMBINA ELABORADO

;

ARMANDO SUELDO CARRASCO

IX

CICLO

P1

P2

C1

C2

0.30

L1=

5.80

0.45

B

DATOS EN "P1" CM= CV=

25 T 10 T

f´y=

4200

f´c=

175

C1 b= t=

0.30 m 0.30 m

EN "P2" CM= CV=

40 T 15 T

esfuerzo admisible del terreno σ t= 1.8 18 S/C piso=

400 0.4

M=

0

C2 b= t=

0.45 m 0.45 m

PESO PROMEDIO DEL SUELO Y CIMENTACION

ɣp=

2000 Kg/m3 2 T/m2

SOLUCION CARGA DE SERVICIO

CARGA ULTIMA

P1= CM + CV =

35 T

Pu1= 1.4CM + 1.7CV =

52

P2= CM + CV =

55 T

Pu2= 1.4CM + 1.7CV =

81.5

Calculo de la Reaccion Neta

σ n=

14.6 T/m2

Calculo del "B" de la zapata B= t1+l1+t2 =

6.55 m

P1

P2

R C1

C2

C.G

Xo e R.Xo = P1 * (t1/2) Xo = 3.92 m

+

P2*(t1+L1+ t2/2)

donde :

e= Xo - B/2 e= 0.64861111 m debe cumplir: e 0.65 por lo tanto: + -

< <

B/6 1.09

q1,2 =

P/B

q1=

21.90 T/m

q2=

5.58 T/m

+ -

(6 * P * e)/B^2

Calculo del "A" de la zapata

q1= σ n * A A=

1.50 m

por criterio propio usaremos :

A=

DISEÑO POR FLEXION ENSENTIDO LONGITUDINAL Pu1

Pu2

R C1

C2

C.G

Xo e R.Xo = Pu1 * (t1/2) Xo = 3.92 m

+

Pu*(t1+L1+ t2/2)

donde :

e= Xo - B/2 e= 0.64475655 m debe cumplir: e 0.64 por lo tanto:

q1,2 =

P/B

+ -

(6 * P * e)/B^2

< <

B/6 1.09

q1=

32.42 T/m

q2=

8.34 T/m

qu2= 8.34

q1

qu1=

Xo

SECCIONES DE MOMENTO MAXIMO

q´= ((qu1 - qu2) / B) * Xo

………………. (1)

Vx = -Pu1 + (qu2*Xo) + (q´ * Xo/2)

………… (2)

de (1) y (2) se obtiene: Xo=

3.51 m

Calculo del Momento maximo

Mmax = Pu1 (Xo - t1/2) + qu2((Xo^2)/2) + q´(Xo^3)/6 Mmax =

-96.7983 T-m 96.79833

Calculo del peralte o hz

√(𝑀𝑚𝑎𝑥/(ᶲ∗𝑏∗𝑤∗𝑓´𝑐∗(1−0.59∗𝑤))) d= d=

65.99 cm

usamos: h=

70 cm

d=

64.05 cm

entonces:

donde:

Calculo del Area de As

𝑎=𝑑/5 =

𝑎=(�_𝑠 〖 .𝑓 〗 _𝑦)/ (0.85 〖� ′〗 _𝑐.𝑏) =

12.81 cm

8.36 cm

�_𝑠= 𝑀/( 〖∅ .𝑓 〗 _𝑦.(𝑑−𝑎/2)) = As =

42.77

a=

8.05 cm

As =

42.66

a=

8.03 cm

As =

42.66

a=

8.03 cm

As =

42.66

Colocando el Acero Longitudinal

Acero 3/8" 1/2" 5/8" 3/4" 1"

Area 0.71 1.27 1.98 2.85 5.07

Elección del Acero a criterio As Nro. De fierros 42.66 60.1 42.66 33.6 42.66 21.5 42.66 15.0 42.66 8.4

Redondeo 61 34 22 15 9

Asmin=

Acero 3/8" 1/2"

Elección del Acero a criterio Area As Nro. De fierros 0.71 31.70 44.7 1.27 31.70 25.0

Redondeo 45 25

5/8" 3/4" 1"

1.98 2.85 5.07

31.70 31.70 31.70

16.0 11.1 6.3

17 12 7

ANA LOS ANDES - FILIAL LIMA

INGENIERIA CIVIL

APATA COMBINADA CODIGO :

A91637E

NTN

hf=

1.50 m

hz

kg/cm2 kg/cm2

misible del terreno kg/cm2 T/m2 kg/m2 T/m2 T-m

β = 0.85

CATEDRA:

Cimentaciones

T T

R=

90 T

1.50 m

Az= A * B Az=

R=

133.5 T

9.825

32.42

3.68 Vx=0

cuantia de la viga=

0.004

w=

0.10

𝑀/( 〖∅ .𝑓 〗 −𝑎/2)) =

44.42 cm2

cm2

cm2 cm2 cm2

Redondeo 61 34 22 15 9

Espaciamiento 2 cm 4 cm 7 cm 10 cm 17 cm

9

fierros de

1"

@

31.70475 cm2 12

Redondeo 45 25

fierros de

Espaciamiento 3 cm 6 cm

3/4"

@

13 cm

17 cm

17 12 7

9 cm 13 cm 21 cm

entaciones

17 cm

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