practica 9 ok
TRANSCRIPT
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A) PROPIEDADES GEOMETRICAS
FIGURA BASE ALTURA Ai (cm2) Y (cm) Ai Y (cm3) Ixx
1 60 15 900 92.5 83250 16875
2 15 70 1050 50 52500 428750
3 40 15 600 7.5 4500 11250
4 0 0 0
5 0 0 0
6 0 0 0
7 0 0 0
8 0 0 0
9 0 0 0
2550 140250 456875
h 100 cm !" 68944.44 cm3
A#$% 2550 cm2 !i 56409.09 cm3
&i 55 cm '" 22.12 cm
&" 45 cm 'i 27.04 cm
I 3102500 cm4 E 49.16
*R+IG*, A-ER*
/c 350 = 0.8 L1=
/ci 280 250 '"i L2= 2400 17576.4223 'cm2 L
dmin= 7 cm & 212.5 '"i
& 14939.9589 'cm2
A1 23.22 mm2
emax = 48.000 cm A1 0.2322 cm2
Cargas-%#% i% 1000 m
S:;#$im$"% gs= 100 m
a) PROPIEDADES GEOMETRICAS SECCION SIMPLE
h 100 cm !" 68944.44 cm3
A#$% 2550 cm2 !i 56409.09 cm3
&i 55 cm '" 22.12 cm
&" 45 cm 'i 27.04 cm
I 3102500 cm4 E 49.16
cm2
cm2
m3
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;) TENSIONES ADMISIBLES
*R+IG*,
ETAPA COMPRESION TRACCION
ACI T0
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10 2295 374.9999999 3750 229500 37500 375000
11
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Mmax
TENDN NO CONCORDANTE
) TRAYECTORIA CON DOS PARABOLAS CON LA MAXIMA EXCENTRICI
$i 48.00 cm $" 38.00 cm
Tramo 0 - 16
0 0 1 # = 0
28.83$% &.3' 1 = 0.8
2&$ 1$ 1 + = 0.38
A = 0.01163873
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B =
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28.1 48.000
29 46.684
30 43.970 = 1
31 39.938
32 34.587 q%=)#./ = 0&01860833 27.918
34 19.93035 10.624
36 0.000 = 1 '
$ 0.48 m
X M M1 M 2
0 0.000 * 0.000 * 0.00000000 *
1 10.308 * 13.&%0 *
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31 31.'80 * 3%.%38 *
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I>) 22.90695767 " 29.9332591 O!
>) 38 " 38 O!
>A,* -
I)
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-) 90701.97412 '
=: 98533.6263 '
') >$#iic%# $?"i:?$" %mi"i;D$" A-I $? %m;%" $%%" %#% D%" "$cci:?$" c#iic%"
>A,* AI) ) ) 48 " 48 O!
A=*Y*
I) ) 38 " 38 O!
>A,* -
I) ) ) 48 " 48 O!
D) HETER+I,AR ,U+ER* HE T*R*,ES
17576.42228 'cm2 A 8.154198614
A1 0.2322 cm2 ,:. T:# 35.117134426
& 14939.95894 'cm2 A 8.127
i 12124.23112 'cm2 " 12250.7663 'cm2
082 x & 12250.76633 'cm2 " 13006.5525 'cm2
074 x 13006.55249 'cm2
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Y< &i Ai(Y
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PRET
A-ER*
ETAPA COMPRESION TRACCION
ACI T0 14061.1378 14043.5614T00 13006.5525 12250.76633
m%x (' cm)
m%x (' cm) M2
0
834600
14980001990200
2311200
2461000
2473035
2439600
2247000
1883200
1348200
Mg
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642000
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DAD
:5m e5m0 0
&.3' 0.8
1$ 0.38
0 0&0106'3
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'
"g#.m
M1
P#
+ 2
M 1
3e
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$2 61.88 cm
+m%x 7190400 ' cm +mi? 2570400
!" 68944.44 cm3
$3 35.779 cm
+m%x 5342296 ' cm +mi? 1909746
!i 56409.09 cm3
ic%"
M 2
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28 T:#:?$"
O!O!
4 29.933259094 A 2550!i 56409.09 !" 68944.44
C 0.8
35678L ,59!:9 +:9+:6!#9,5
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+mi? % 884052.36001
$ % 13.07
A 2550
!i 56409.09
!" 68944.44
? 0.8
+m%x % 2473035
=: 98533.626278
A 2550
$ ; 38.00!i 56409.09
!" 68944.44
+mi? ; 2570400
+m%x ; 7190400
$ c 28.23
+mi? c 1909746
+m%x c 5342296
35 T:#:?$"
O!
O!
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PERDIDAS POR FRICCION Y HUNDIMIENTO DE ANCLA,E
0 x 'x U
;= 0 0 0 0 0
h 0 mm 18 0 0.03111111 0
E" -*+=RESI*, 36 0 0.06222222 0
L 36 J>ALUEK J>ALUEK J>ALUEK J>ALUEK- ALUEK 'cm2
FR 3VALUE452./6m7
?
ASE,TA+IE,T*
J>ALUEK cm J>ALUEK +
h J>ALUEK cm2 h J>ALUEK
Th J>ALUEK 'cm2
: J>ALUEK
x T8 T88
0 J>ALUEK J>ALUEK
18 J>ALUEK J>ALUEK
36 J>ALUEK J>ALUEK
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i) Verificar las tensiones en el acero con las tensiones admisibles.
T0 " 0.80@& " J>ALUEK
& J>ALUEK " 0.74@ " J>ALUEK
"i J>ALUEK J>ALUEK
" E##509
$ E##509
i J>ALUEK
? E##509
cm2
cm2 cm2
cm2
j) Confirmar el valor real de la relacion de perdidas iniciales y finales ALUEK J>ALUEK J>ALUEK
18 J>ALUEK J>ALUEK
J>ALUEK J>ALUEK J>ALUEK J>ALUEK
36 J>ALUEK J>ALUEK
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3VALUE4