Memoria (spa) (0.38MB)
Memoria (spa) (0.38MB)
Memoria (spa) (0.38MB)
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-Tramo 2:<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
Iy =<br />
λy =<br />
I 7<br />
y<br />
A=<br />
2<br />
x<br />
1<br />
L 6<br />
P<br />
i = 9<br />
y 2<br />
6<br />
4 = 92,25 mm<br />
2<br />
3<br />
= 65,04<br />
2<br />
LP = β x L 5=<br />
1 x 6000 = 6000 mm<br />
β = 0,7 aunque comprobaremos con β = 1<br />
6<br />
λy 5<br />
̅λy = = 8<br />
E λ = 0,75 → curva C → χy = 0,687<br />
6<br />
<br />
<br />
I 4<br />
71<br />
6<br />
z<br />
iz = A<br />
5<br />
= 2<br />
4<br />
4 = 427,62 mm<br />
x 2<br />
7<br />
L 1 3<br />
x<br />
P <br />
1<br />
λz = i = 4<br />
2<br />
z 2<br />
8 = 30,03<br />
<br />
7<br />
4<br />
<br />
<br />
LP = β x L<br />
6<br />
= 2,14 x 6000 = 12840 mm<br />
2<br />
β = 2,14<br />
3<br />
z λ <br />
̅λz = = 8<br />
E λ = 0,346 → curva C → χz = 0,918<br />
6<br />
<br />
<br />
3<br />
7<br />
Comprobación:<br />
1-<br />
N<br />
A<br />
y χ<br />
E<br />
d f<br />
y<br />
d<br />
+ αz kz<br />
M<br />
m z z E<br />
w f<br />
d<br />
z y<br />
d<br />
CÁLCULOS JUSTIFICATIVOS 19<br />
c<br />
αz = 1 N<br />
E<br />
kz = 1+ 0,6 ̅λz dN<br />
z χ<br />
= 1,035<br />
C R<br />
d<br />
< 1<br />
<br />
<br />
<br />
<br />
= 1+0,6x0,346<br />
9<br />
1<br />
8<br />
x<br />
2<br />
2<br />
1<br />
5<br />
3<br />
3<br />
7<br />
8<br />
=<br />
7