(4.9)
, sFP/YF .
(4.10)
Fa=1;
(4.11)
n . ea eb
(4.12)
kFb .9. kFv
(4.13)
(4.14)
dF =0.016 dF =0.006 . g0 .10.
YF
(4.15)
z=z1, , z=z2, . YF . 11 .
9 /2/
ybd | £ HB350 | > HB 350 | ||||
(b/dm1) | I | II | III | I | II | III |
0.2 | 1.53 | 1.18 | 1.05 | 1.25 | 1.09 | 1.05 |
0.4 | 2.01 | 1.36 | 1.08 | 1.53 | 1.18 | 1.05 |
0.6 | 2.47 | 1.60 | 1.14 | 1.75 | 1.30 | 1.07 |
0.8 | 3.03 | 1.86 | 1.26 | 2.08 | 1.43 | 1.13 |
1.0 | - | 2.12 | 1.40 | - | 1.56 | 1.20 |
1.2 | - | 2.44 | 1.60 | - | 1.72 | 1.30 |
1.4 | - | 2.80 | 1.80 | - | 1.90 | 1.40 |
1.6 | - | - | 2.00 | - | - | 1.50 |
: I - ; II - ; III - . |
10 /3/
mn, | ||||
3.55 | ||||
. 3.55 10 | ||||
. 10 |
11 /2/
zv | ||||||
YF | 4.26 | 4.07 | 3.90 | 3.78 | 3.70 | 3.68 |
zv | >180 | |||||
YF | 3.62 | 3.61 | 3.60 | 3.60 | 3.62 | 3.63 |
(4.16)
, (4.17)
, .4. sF. kFc = 1 kFc = 0.75 - . kFL =1, NFE NF0. , (2.2)
(4.18)
NF0 NFE (2.3) (2.4); m=6 , , m=9 . Ys .12.
|
|
12/3/
m, | ||||||||||
Ys | 1.11 | 1.03 | 1.00 | 0.97 | 0.96 | 0.93 | 0.925 | 0.92 | 0.915 | 0.91 |
kFx =1, da£ 300.
(4.19)
sF sF , 5-6 %. ( ). , .