.
:
2.
2 , :
2.
4. .
hp = 0,6T = 0,6*0,8 = 0,48 .
:
bp = 
= 
= 1,2 .
:
λp = 
= 
= 0,5 .
| . |
| . |
| .260205.015. 005 |
| . |
| . |
| . |
| . . |
| . |
| 2. , . |
| . |
b = *bp = 0,2*1,3 = 0,26 .
: = 0,2
:
tp = t`p*bp = 0,2*1,3 = 0,26 .
t`p = 0,2
.
():
l = (0,8÷0,9)D = 0,72÷0,81 .
D = 0,9 , .
| . |
| . |
| .260205.015. 005 |
l` = 
= 
= 0,9 .
():
l = (0,42÷0,43)*l = 0,34÷0,35 .
():
bc = (0,60÷0,65)*l = 0,54÷0,59 .
= ():
D = h = 1,01*D = 1,01*0,9 = 0,909 .
():
0,01*D = 0,01*0,9 = 0,009 .
(2):
S = h*b = 0,909*0,59 = 0,54 2.
.
.
, () . , , , , . ,
| . |
| . |
| .260205.015. 006 |
| . |
| . |
| . |
| . . |
| . |
| 2.1. . |
| . |
. , . 35 30 28 . , , 4 . . . , , (). , . , 35. , , .
|
|
|
, . .
.
.
.260205.015. 007
.
.
.
. .
.
2.2. , .
.
2.2. , .
.
, :
, . , , ..
S = 1,67 2
1. .
:
:
2. .
:
| . |
| . |
| .260205.015. 007 |
, + , ():
Y = σy* 
*F,
σ = qe*σe0* 
+ δ,
: σ ;
U ;
q1, qe, δ* δ :
δ = 10˚ => q1 = 1,02; qe = 0,95; δ* = 10˚
δ = 20˚ => q1 = 1,12; qe = 0,84; δ* = 20˚
δ = 30˚ => q1 = 1,24; qe = 0,69; δ* = 28˚
δ = 40˚ => q1 = 1,28; qe = 0,57; δ* = 33˚
σ0 = 1; σ0 = 1 .
Up = U*(1-ѱ) = 16,9*(1-0,1) = 15,21 /.,
U , /.;
ѱ = (0,58÷0,1) .
|
|
|
F = 
= 
= 0,64 2 .
: D .
σ = 0,95*1* 
+ 4,3*10 = 39,8;
σ = 0,84*1* 
+ 4,3*20 = 83,3;
σ = 0,69*1* 
+ 4,3*30 = 128,9;
σ = 0,57*1* 
+ 4,3*35 = 149,7.
| . |
| . |
| .260205.015. 007 |
Y = 39,8* 
*0,64 = 2949 .
Y = 83,3* *0,64 = 6137 .
Y = 128,9* *0,64 = 9552 .
Y = 149,7* *0,64 = 11093 .
| . |
| . |
| .260205.015. 007 |
4. , + .
| . |
| . |
| .260205.015. 008 |
| . |
| . |
| . |
| . . |
| . |
| 2.3. , . |
| . |
, , .
():
d = 
= 
= 0,12÷0,104 .
: max = 5742 ;
[τ] = (20÷25)*106 .
. . , , . () , , .
.
.
.260205.015. 009
.
.
.
. .
.
2.4. .
.
2.4. .
- , -1,6 .
02-31-4 (220) (24), ().
, 15,7 *
, 35 .
, 16-25
-10
, 6,5
, 11 /
, 2400 /
, 390
