1,5 . 3.1:
. 3.1.
- 220 ;
- 1490 ;
- :
- bf =1490
-
(. 3.2):
. 3.2.
-
.
-
>0,1, .
, .
1 2 . 2.
2
12 .
/2 | /2 | |||
3,3 | 1,1 | 3,63 | ||
: | ||||
- δ=20 18×0,02×1=0,36 | 0,36 | 1,3 | 0,468 | |
- δ = 35 20×0,035×1= 0,70 | 0,70 | 1,3 | 0,91 | |
δ=70 17×0,07×1=1,19 | 1,19 | 1,3 | 1,547 | |
5,55 | 6,555 | |||
1,2 | 9,6 | |||
1,2 | 3,6 | |||
13,55 | 16,455 | |||
10,55 | 12,555 |
1 . . 1,5 γ =1,0:
- q =16,4551,501,0 = 24,68 /;
- qn = 13,551,51,0 = 20,33 /;
-
ql =10,551,501,0=15,82 /.
.
5,98
.
- , - .
:
-
ͷ
-
:
-
ͷ
-
ͷ
.
800 . Rsn =800 , Rs =695 ; Es =200000 . 500 Rsw =300 (. 4, 5, 6, 7 ). . σsp =0,7Rsn =0,7800=560 .
|
|
25, . : Rb =14,5; Rbt =1,05 . : Rb,ser = 18,5 ; Rbt,ser =1,4 . b =30000 (. 1, 2, 3 ).