23. .
:
:
:
:
- .
B=2.1 , L=2.4 .
.
:
.24. .
:
, .
- :
/2
/2
;
.
Sc - :
;
: β , 0,8;
σzp,i i - , zi-1 zi , ;
hi Ei i - ;
n , .
, :
szp<0,2szg
:
szg = szgo + å(gihi);
: szgo =
szp = αP;
: Po = P..- szgo =73,95-5.962=67.988 /2
h = (0,2 0,4)×b, b = 2.1 .
14
Zi, | 2z/b | l/b | α | szp, /² | szg, /² | 0,2szg, /² | hi, | Ei, /² | szp., /² | Si, |
1.14 | 1,000 | 67.988 | 5.962 | 1.19 | 0.5 | - | 0,057 | |||
0,5 | 0.476 | 0,965 | 65.61 | 7.037 | 1.407 | 66.79 | ||||
1,0 | 0.952 | 0,754 | 51.26 | 8.112 | 1.62 | 58.43 | ||||
1,5 | 1.428 | 0.578 | 39.29 | 9.112 | 1.82 | 45.27 | ||||
2,0 | 1.905 | 0.382 | 25.97 | 10.112 | 2.02 | 32.63 | ||||
2,5 | 2.381 | 0.288 | 19.58 | 11.112 | 2.22 | 22.77 | ||||
3,0 | 2.857 | 0.234 | 15.91 | 12.112 | 2.42 | 17.74 | ||||
3,5 | 3.333 | 0.174 | 11.83 | 13.082 | 2.61 | 13.87 | ||||
4,0 | 3.809 | 0.131 | 8.91 | 14.052 | 2.81 | 10.37 | ||||
4,5 | 4.286 | 0.115 | 7.82 | 15.022 | 3.00 | 8.36 | ||||
4.762 | 0.083 | 5.64 | 15.992 | 3.19 | 6.73 | |||||
5,5 | 5.238 | 0.075 | 5.09 | 16.962 | 3.39 | 5.36 | ||||
5.710 | 0.064 | 4.35 | 17.932 | 3.58 | 4.72 | |||||
6.5 | 6.190 | 0.053 | 3.60 | 18.902 | 3.78 | 3.97 |
:
|
|
S. = 5.7 S = 10 .
. 26. .
5.2.7. .
, - .
. . .
dfn=1.54 . df=0.77 . NII=372,694
= 55 /10=5,5 /2 (50-101-2004, .6.10)
Rj , Rj =4.765 /2
:
: . , .
4.
4 -4 - , 600600 . - . 1. N0II = 142 , M0II = 21,1 , 0II = 8 . .27.
.
27. .