5.1.
,
σ = 1372... 1764 (140...180 /2)
1570
F () () :
≥5.60*74.24=415.74 ,
( ) =5.60, 6
S () (), :
= ,
Q ( ), ;
G (),
=0,05*137.2=6.86
ί ; i=2
η ... ; η=0.99
η ... . η=0.98
14954-80. - 619(1+6+6/6)+7(1+6) σ. .
Fp=449
1570 /2
27
337.272
1000 3090
5.2.
D ()
D ≥ 22.4(27-1) = 582.4
D =600
dk , dk=27 ;
h - (), h=22.4
D ≥ 0.7*582.4 = 407.68
(). D =600
dA3=110
A=72
6
. 5.2.1 ()
5.3.
1 .
, ..
,
,
d ,
dkp ,
,
7872-89
: 8018 7872-89
: 1, 1.
d 90
120
5.4.
5.4.1.
, . .5.
Wx (3)
= =3193,293
Mmax , *;
|
|
[σ] ,
1- , 2-, 3- , 4-, 5- , 6-, 7- ,8- , 9-
.5.1 .
40 45 [σ] = = = 81,5 ,
max (*)
ℓ - ,
D ,
ℓ () :
D=120 > B + 2δ =72+2*10=92 , ℓ = D + (30... 40) =120+35=155
, ;
δ , δ = 8... 12, 10
h () :
=
, ;
d , .
()
=120+45=165
d ()
=80+7=87
5.4.2.
d ()
=0,85*49,5=42,08
q () (.5.2) [q], ..
q 50
δ ,
[ q ] = 80... 90
5.5.
, Q (.5.3)
, (Z ), (.5.4)
.5.5.1
.5.5.2
d () :
=
max ( ), *
[σ]u ,
40 45
= ,
, = 1,6... 1,8 ( )
σ 40, σ = 245
max (*) :
,
ℓ - , ,
, ( ).
5.6.
, , () , ..
≥
.5.4 ( )
() :
=137.5*
: G ,
|
|
m ;
m = 3
L , .:
= =6.38 ..
n ( )
, .
()
,
Vn (), /;
ι ( ι = 1... 3)
G ()
G = G =95523,89*1.2*12=137554,4
G , ;
, , = 1,2;
, =1,0... 1,4 ( 100... 250); 1.2
,
G1, G2... Gi , ;
t1, t2... ti , .
. 8328-75
2000
3, 0
2300
d = 80
D = 170
= 39
b = 11
r = r1 = 3.5
* = 260000
*=163000
= 3.9
n.*10-3 = 3.6 /-1
5.7.
. , ( , d do ).
(.5.7.1), .
Q , ;
δ , ;
R r ,
b,
.. R =
d > do, r = ,
do > d, r = .
[σ]p ()
,
σ , 3
σ = 230 ;
, = 3,5... 4,0, 3.5
.5.7.1
-; - ; ;
.5.7.2 .