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MAESTRIA EN ESTRUCTURAS
MODULO: CIMENTACIONES
DOCENTE: MSc. Ing. Martin Duchen
EJEMPLO
DATOS:




→= 31 5,18
m
KN
γ 



→= 32 18
m
KN
γ
º321 =φ º242 =φ
01 =c 



→= 22 30
m
KN
c
1
3
2
φδ = 24=Hormigonγ 



3
m
KN
2=admq 



2
cm
Kg
210'
=cf 



2
cm
Kg
CALCULO DE LOS ESFUERZOS EN EL MURO
MUROS DE GRAVEDAD 1
MAESTRIA EN ESTRUCTURAS
MODULO: CIMENTACIONES
DOCENTE: MSc. Ing. Martin Duchen
2
..
2
1
HKP aa γ= 307.0
2
32
45tan
2
45tan 22
=





−=





−=
φ
aK
97.1195.6*5.18*307.0
2
1
..
2
1 22
=== HKP aa γ ( )KN
65.126.32
3
2
15cos97.119.
3
2
cos 1 =





+=





+= φθah PP ( )KN
08.71.32
3
2
15cos97.119.
3
2
1 =





+=





+= φθsenPP av ( )KN
PASO 1.-VERIFICACION A LA ESTABILIDAD O AL VOLTEO
Nº AREA [m2
] Peso [KN] Brazo [m]
Momento
[KN.m]
1 4,36 104,652 2,18 228,14
2 3,42 82,08 1,37 112,45
3 0,77 18,468 0,98 18,10
4 2,80 67,2 1,75 117,60
Pv 71,08 2,83 201,16
343,48 677,45
Momentos Actuantes:
94.259
3
8.07.5
97.119
3
. =




 +
=





=∑
H
PM hO ( )mKN.
( ) 261.2
94.259
45.677
≥===
∑
∑
O
R
volteo
M
M
FS ¡CUMPLE!
PASO 2.- VERIFICACIÓN AL DESLIZAMIENTO
MUROS DE GRAVEDAD 2
( )( ) =8.05.3
( )( ) =27.07.5
2
1
( )( ) =6.07.5
( )( ) =53.17.5
2
1
∑ =RM=∑V ( )mKN.
MAESTRIA EN ESTRUCTURAS
MODULO: CIMENTACIONES
DOCENTE: MSc. Ing. Martin Duchen
( ) DKcDKFS ppvolteo .2..
2
1
2
2
2 += γ 37.2
2
24
45tan2
=





+=pK
( )( )( ) ( ) 59.186)5.1(37.23025.11837.2
2
1 2
=+=pP ( )KN
Fuerzas Resistentes:
( ) ( ) BcVBcVFr 





+





=+= ∑∑ 22
3
2
3
2
tantan φδ
( )
( ) ( ) ( )
84.2
65.126
59.1865.330.
3
2
24.
3
2
tan48.343
3
2
3
2
tan 22
=
+





+





=
+





+





=
∑
h
p
ntodeslizamie
P
PBcV
FS
φ
( ) 5.184.2 ≥=ntodeslizamieFS ¡CUMPLE!
( ) 37.1=ntodeslizamieFS Si se desprecia el valor Pp
PASO 3 .- VERIFICACIÓN A LA CAPACIDAD PORTANTE
53.0
48.343
94.25945.677
2
5.3
2
=
−
−=
−
−=
∑
∑ ∑
V
MMB
e
OR
58.0
6
5.3
6
==
B
53.0=e 58.0≤ ¡CUMPLE!
30.187
5.3
)53.0(6
1
5.3
48.3436
1max =





+=





+=
∑
B
e
B
V
q 





2
m
KN
97.8
5.3
)53.0(6
1
5.3
48.3436
1min =





−=





−=
∑
B
e
B
V
q 





2
m
KN
admqq ≤max
287.1 ≤ ¡CUMPLE!
PASO 4.- VERIFICACIÓN DE ESFUERZOS
Verificación de Corte y Tensión de flexión en la Puntera:
MUROS DE GRAVEDAD 3
MAESTRIA EN ESTRUCTURAS
MODULO: CIMENTACIONES
DOCENTE: MSc. Ing. Martin Duchen
( )
( ) ( ) ( ) 57.1378.05.3
5.3
97.830.187
8.0minmax
=−
−
=−
−
= B
B
qq
qx 





m
KN
54.14697.857.137min1 =+=+= qqq x 





m
KN
CORTE:
( ) ( ) ( ) ( ) 54.133
2
8.0
54.14630.1878.054.146
2
1max1 =−+=−+=
x
qqxqV ( )KN
( ) ( )
( )
14.13487
1
101
.54.133 =





=
KN
Kg
KNV ( )Kg
( ) 06.2158066.21354.1336,16,1 ≈=== VVu ( )Kg
69.2
)100(80
06.21580
100.
===
h
V
V u
c 





2
cm
Kg
76.553.0 '
=== ccu fV φ 





2
cm
Kg
76.569.2 ≤⇒≤ cuc VV ¡CUMPLE!
MOMENTOS:
( ) ( ) ( ) 59.55
3
8.0
53.1463.187
2
8.0
53.146
32
222
1max
2
1 =−+=−+=
x
qq
x
qM ( )mKN.
MUROS DE GRAVEDAD 4
MAESTRIA EN ESTRUCTURAS
MODULO: CIMENTACIONES
DOCENTE: MSc. Ing. Martin Duchen
( )( ) ( ) ( ) 4.898334
100101
.59.556.1.6.1 =







==
m
cm
KN
Kg
mKNMM u ( )cmKg.
Tensión:
( )
( )
42.8
80.100
40.8983346
.
6
22
===
hb
M
f u






2
cm
Kg
( ) 53.1221065.033.133.1 '
=== ct ff φ 





2
cm
Kg
53.1242.8 ≤⇒≤ tff ¡CUMPLE!
Verificación de Corte y Tensión de flexión en el Talón:
( )
( ) ( ) ( ) 28.153.0
5.3
97.830.187minmax
=
−
=
−
= x
B
qq
qx 





m
KN
25.2497.828.15min1 =+=+= qqq x 





m
KN
CORTE:
45.105)7.5(5.18. === Hq γ 





m
KN
MUROS DE GRAVEDAD 5
MAESTRIA EN ESTRUCTURAS
MODULO: CIMENTACIONES
DOCENTE: MSc. Ing. Martin Duchen
( ) ( ) ( )( ) ( ) ( ) 65.26
2
3.0
97.825.243.025.2445.105
2
max11 =−+−=−+−=
x
qqxqqV ( )KN
( ) ( )
( )
65.2691
1
101
.65.26 =





=
KN
Kg
KNV ( )Kg
( ) 64.430664.4265.266,16,1 ≈=== VVu ( )Kg
54.0
)100(80
64.4306
100.
===
h
V
V u
c 





2
cm
Kg
76.553.0 '
=== ccu fV φ 





2
cm
Kg
76.554.0 ≤⇒≤ cuc VV ¡CUMPLE!
MOMENTOS:
( ) ( ) ( ) ( ) ( ) ( ) 11.4
3
3.0
97.825.24
2
3.0
25.2445.105
32
222
min1
2
1 =−+−=−+−=
x
qq
x
qqM
( )( ) ( ) ( ) 38.66456
100101
.11.46.1.6.1 =







==
m
cm
KN
Kg
mKNMM u ( )cmKg.
Tensión:
( )
( )
62.0
80.100
38.664566
.
6
22
===
hb
M
f u






2
cm
Kg
( ) 53.1221065.033.133.1 '
=== ct ff φ 





2
cm
Kg
53.1262.0 ≤⇒≤ tff ¡CUMPLE!
Verificación de Corte, Tensión de flexión y compresión en la Pantalla:
MUROS DE GRAVEDAD 6
( )mKN.
MAESTRIA EN ESTRUCTURAS
MODULO: CIMENTACIONES
DOCENTE: MSc. Ing. Martin Duchen
( ) ( )( ) 26.927.55.181307.0
2
1
..
2
1 22
=== HKq a γ 





m
KN
CORTE:
94.262
2
)7.5(26.92
2
.
===
zq
V ( )KN
( ) 7.42094.2626.16.1 === VVu ( )KN 10.42491=uV ( )Kg
( )
77.1
100240
10.42491
100.
===
b
V
V u
c 





2
cm
Kg
76.553.0 '
== ccu fV φ 





2
cm
Kg
76.577.1 ≤⇒≤ cuc VV ¡CUMPLE!
MOMENTOS:
( ) 79.504583759.499
6
7.526.92
632
.
22
≈===





=
qxxxq
M ( )cmKg.
46.8073340)79.5045837(6.106.1 === MM u ( )cmKg.
MUROS DE GRAVEDAD 7
2
..
2
1
HKq a γ=
MAESTRIA EN ESTRUCTURAS
MODULO: CIMENTACIONES
DOCENTE: MSc. Ing. Martin Duchen
( )
( )
41.8
240.100
46.80733406
.
6
22
===
hb
M
f u






2
cm
Kg
( ) 53.1221065.033.133.1 '
=== ct ff φ 





2
cm
Kg
53.1241.8 ≤⇒≤ tff ¡CUMPLE!
Compresión:
( )( ) ( ) ( )
( )
12.6
240100
79.50458376
1
101
240.100
2.205
.100
6
. 222
=+





=+=
KN
KgKN
B
M
Bb
W
f
pa






2
cm
Kg
( ) 821065.085.085.0 '
=== cc ff φ 





2
cm
Kg
812.6 ≤⇒≤ a
c ff ¡CUMPLE!
MUROS DE GRAVEDAD 8

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49214733 ejemplo-muros-de-gravedad

  • 1. MAESTRIA EN ESTRUCTURAS MODULO: CIMENTACIONES DOCENTE: MSc. Ing. Martin Duchen EJEMPLO DATOS:     →= 31 5,18 m KN γ     →= 32 18 m KN γ º321 =φ º242 =φ 01 =c     →= 22 30 m KN c 1 3 2 φδ = 24=Hormigonγ     3 m KN 2=admq     2 cm Kg 210' =cf     2 cm Kg CALCULO DE LOS ESFUERZOS EN EL MURO MUROS DE GRAVEDAD 1
  • 2. MAESTRIA EN ESTRUCTURAS MODULO: CIMENTACIONES DOCENTE: MSc. Ing. Martin Duchen 2 .. 2 1 HKP aa γ= 307.0 2 32 45tan 2 45tan 22 =      −=      −= φ aK 97.1195.6*5.18*307.0 2 1 .. 2 1 22 === HKP aa γ ( )KN 65.126.32 3 2 15cos97.119. 3 2 cos 1 =      +=      += φθah PP ( )KN 08.71.32 3 2 15cos97.119. 3 2 1 =      +=      += φθsenPP av ( )KN PASO 1.-VERIFICACION A LA ESTABILIDAD O AL VOLTEO Nº AREA [m2 ] Peso [KN] Brazo [m] Momento [KN.m] 1 4,36 104,652 2,18 228,14 2 3,42 82,08 1,37 112,45 3 0,77 18,468 0,98 18,10 4 2,80 67,2 1,75 117,60 Pv 71,08 2,83 201,16 343,48 677,45 Momentos Actuantes: 94.259 3 8.07.5 97.119 3 . =      + =      =∑ H PM hO ( )mKN. ( ) 261.2 94.259 45.677 ≥=== ∑ ∑ O R volteo M M FS ¡CUMPLE! PASO 2.- VERIFICACIÓN AL DESLIZAMIENTO MUROS DE GRAVEDAD 2 ( )( ) =8.05.3 ( )( ) =27.07.5 2 1 ( )( ) =6.07.5 ( )( ) =53.17.5 2 1 ∑ =RM=∑V ( )mKN.
  • 3. MAESTRIA EN ESTRUCTURAS MODULO: CIMENTACIONES DOCENTE: MSc. Ing. Martin Duchen ( ) DKcDKFS ppvolteo .2.. 2 1 2 2 2 += γ 37.2 2 24 45tan2 =      +=pK ( )( )( ) ( ) 59.186)5.1(37.23025.11837.2 2 1 2 =+=pP ( )KN Fuerzas Resistentes: ( ) ( ) BcVBcVFr       +      =+= ∑∑ 22 3 2 3 2 tantan φδ ( ) ( ) ( ) ( ) 84.2 65.126 59.1865.330. 3 2 24. 3 2 tan48.343 3 2 3 2 tan 22 = +      +      = +      +      = ∑ h p ntodeslizamie P PBcV FS φ ( ) 5.184.2 ≥=ntodeslizamieFS ¡CUMPLE! ( ) 37.1=ntodeslizamieFS Si se desprecia el valor Pp PASO 3 .- VERIFICACIÓN A LA CAPACIDAD PORTANTE 53.0 48.343 94.25945.677 2 5.3 2 = − −= − −= ∑ ∑ ∑ V MMB e OR 58.0 6 5.3 6 == B 53.0=e 58.0≤ ¡CUMPLE! 30.187 5.3 )53.0(6 1 5.3 48.3436 1max =      +=      += ∑ B e B V q       2 m KN 97.8 5.3 )53.0(6 1 5.3 48.3436 1min =      −=      −= ∑ B e B V q       2 m KN admqq ≤max 287.1 ≤ ¡CUMPLE! PASO 4.- VERIFICACIÓN DE ESFUERZOS Verificación de Corte y Tensión de flexión en la Puntera: MUROS DE GRAVEDAD 3
  • 4. MAESTRIA EN ESTRUCTURAS MODULO: CIMENTACIONES DOCENTE: MSc. Ing. Martin Duchen ( ) ( ) ( ) ( ) 57.1378.05.3 5.3 97.830.187 8.0minmax =− − =− − = B B qq qx       m KN 54.14697.857.137min1 =+=+= qqq x       m KN CORTE: ( ) ( ) ( ) ( ) 54.133 2 8.0 54.14630.1878.054.146 2 1max1 =−+=−+= x qqxqV ( )KN ( ) ( ) ( ) 14.13487 1 101 .54.133 =      = KN Kg KNV ( )Kg ( ) 06.2158066.21354.1336,16,1 ≈=== VVu ( )Kg 69.2 )100(80 06.21580 100. === h V V u c       2 cm Kg 76.553.0 ' === ccu fV φ       2 cm Kg 76.569.2 ≤⇒≤ cuc VV ¡CUMPLE! MOMENTOS: ( ) ( ) ( ) 59.55 3 8.0 53.1463.187 2 8.0 53.146 32 222 1max 2 1 =−+=−+= x qq x qM ( )mKN. MUROS DE GRAVEDAD 4
  • 5. MAESTRIA EN ESTRUCTURAS MODULO: CIMENTACIONES DOCENTE: MSc. Ing. Martin Duchen ( )( ) ( ) ( ) 4.898334 100101 .59.556.1.6.1 =        == m cm KN Kg mKNMM u ( )cmKg. Tensión: ( ) ( ) 42.8 80.100 40.8983346 . 6 22 === hb M f u       2 cm Kg ( ) 53.1221065.033.133.1 ' === ct ff φ       2 cm Kg 53.1242.8 ≤⇒≤ tff ¡CUMPLE! Verificación de Corte y Tensión de flexión en el Talón: ( ) ( ) ( ) ( ) 28.153.0 5.3 97.830.187minmax = − = − = x B qq qx       m KN 25.2497.828.15min1 =+=+= qqq x       m KN CORTE: 45.105)7.5(5.18. === Hq γ       m KN MUROS DE GRAVEDAD 5
  • 6. MAESTRIA EN ESTRUCTURAS MODULO: CIMENTACIONES DOCENTE: MSc. Ing. Martin Duchen ( ) ( ) ( )( ) ( ) ( ) 65.26 2 3.0 97.825.243.025.2445.105 2 max11 =−+−=−+−= x qqxqqV ( )KN ( ) ( ) ( ) 65.2691 1 101 .65.26 =      = KN Kg KNV ( )Kg ( ) 64.430664.4265.266,16,1 ≈=== VVu ( )Kg 54.0 )100(80 64.4306 100. === h V V u c       2 cm Kg 76.553.0 ' === ccu fV φ       2 cm Kg 76.554.0 ≤⇒≤ cuc VV ¡CUMPLE! MOMENTOS: ( ) ( ) ( ) ( ) ( ) ( ) 11.4 3 3.0 97.825.24 2 3.0 25.2445.105 32 222 min1 2 1 =−+−=−+−= x qq x qqM ( )( ) ( ) ( ) 38.66456 100101 .11.46.1.6.1 =        == m cm KN Kg mKNMM u ( )cmKg. Tensión: ( ) ( ) 62.0 80.100 38.664566 . 6 22 === hb M f u       2 cm Kg ( ) 53.1221065.033.133.1 ' === ct ff φ       2 cm Kg 53.1262.0 ≤⇒≤ tff ¡CUMPLE! Verificación de Corte, Tensión de flexión y compresión en la Pantalla: MUROS DE GRAVEDAD 6 ( )mKN.
  • 7. MAESTRIA EN ESTRUCTURAS MODULO: CIMENTACIONES DOCENTE: MSc. Ing. Martin Duchen ( ) ( )( ) 26.927.55.181307.0 2 1 .. 2 1 22 === HKq a γ       m KN CORTE: 94.262 2 )7.5(26.92 2 . === zq V ( )KN ( ) 7.42094.2626.16.1 === VVu ( )KN 10.42491=uV ( )Kg ( ) 77.1 100240 10.42491 100. === b V V u c       2 cm Kg 76.553.0 ' == ccu fV φ       2 cm Kg 76.577.1 ≤⇒≤ cuc VV ¡CUMPLE! MOMENTOS: ( ) 79.504583759.499 6 7.526.92 632 . 22 ≈===      = qxxxq M ( )cmKg. 46.8073340)79.5045837(6.106.1 === MM u ( )cmKg. MUROS DE GRAVEDAD 7 2 .. 2 1 HKq a γ=
  • 8. MAESTRIA EN ESTRUCTURAS MODULO: CIMENTACIONES DOCENTE: MSc. Ing. Martin Duchen ( ) ( ) 41.8 240.100 46.80733406 . 6 22 === hb M f u       2 cm Kg ( ) 53.1221065.033.133.1 ' === ct ff φ       2 cm Kg 53.1241.8 ≤⇒≤ tff ¡CUMPLE! Compresión: ( )( ) ( ) ( ) ( ) 12.6 240100 79.50458376 1 101 240.100 2.205 .100 6 . 222 =+      =+= KN KgKN B M Bb W f pa       2 cm Kg ( ) 821065.085.085.0 ' === cc ff φ       2 cm Kg 812.6 ≤⇒≤ a c ff ¡CUMPLE! MUROS DE GRAVEDAD 8