2 :
= 
(5.3)
= 
=15558,05
d1 :
d2 
(5.4)
- 40
d2 
25 ≥ 10,904
3 :
= 
+ 
= 
+10865,55=30874,2
3 :
=
= 
=31295,847
d1 (5.4):
d3 
d3 
42 ≥ 
4 :
= 
+ 
= +3825,9=23834,555
4 :
= 
= 
=23971,086
d4 
d4 
42 ≥ 
5.2
:
.
= 
3=4= 
= 17763,28
:
;
:
:
:
:
;
:
:
:
4 :
(5.1)
2, 3, 4
2 :
= 
+ 
(5.2)
= 
+ 
= 
2 :
= (5.3)
= 
=47594,025
d1 :
d2 (5.4)
- 40
d2 
32 ≥ 15,829
3 :
= +
= 
+0=79384,255
3 :
=
= 
=39625,86
d1 (5.4):
d3
d3 
42 ≥ 
4 :
= +
= 
+0=45945,134
4 :
=
= =47594,025
d4
d4
42 ≥ 
5.3 .
.
:
.
:
;
:
:
;
:
;
:
;
:
;
4 :
|
|
|
(5.1)
2, 3
2 :
= + (5.2)
= 
+ 
= 106726,799
2 :
= (5.3)
= 
=152152,129
d1 :
d2 (5.4)
- 40
d2 
54 ≥ 
3 :
= +
= 
+93804,424=93804,424
3 :
=
= 
=143383,85
d1 (5.4):
d3
d3 
42 ≥ 
5.4 .
, , , .
S , [S]=1,5-2,5 , , .
. S:
S= 
(5.5)
- ,
(5.6)
(5.7)
σa, τa -
σa= σ= 
; 
= 
(5.8)
=
σm, τm
-
, 
- :
; 
(5.9)
.
:
(5.10)
, 
-
-
, 
-
- .
I-I.
[S]=2
I-I . S (5.5)
= 
+ (5.11)
= 
( 5.11)
W :
W= 
- 
(5.12)
d-
-
h
W= 
- 
= 14013,668 3
σa= 
( 5.8)
= 410
=240
=126,543
=125218
W= 
(5.13)
W= 
=29464,823 3
= 
(5.14)
= 
S= 
II-II.
[S]=2
II-II . S, (5.5-5.10).
= + (5.11)
= 
( 5.11)
10.2-10.13 [5]
