.
= 
,
Z σ- , Z σ = 8400 ,
K - ,
K = KH α KH β KV.
KH α =1+ A (n 5) Kw =1+0.15(8-5)0.293=1.13
= 0.06 = 0.15 ;
Kw - , .
2 < 350
Kw = 0.002 2 + 0.036(V 9)=0.002248.5+0.036(1.94-9)=0.201
KH β =1+ (K 
1) Kw,
K - , . 9.1 [1] .
= 0.5 
(u + 1)=0.50.4(4.5+1)=1.1
K =1.05 KH β =1+(1.05-1)0.293=1.015
. 10.1 [1]
KV= 1.02
KH= 1.131.0151.02=1.17
σ H = 
=462.7
5%, 15%. σ H> σHP, :
σ H =100 
=100 
s Fj s FPj .
,
YF 1 - ;
KF - ;
Y b - , ( Y b= 0.52): Y b= 1 - 
Y ε - , : Y ε = 
εα ,
εα = [1.88 3.2(
+ 
)] cos β
.
YFj =3.47 + 
+ 0.092 
,
ZVj - , ZVj = Zj, ZVj = 
.
ZV 1 = 42.7 ZV 2 =192.3
YF 1 = 3.47 + 
=3.78 YF 2 =3.47 + 
=3.54
KF = KF α KF β KFV =1.451.0411.03=1.55
KF α =1+0.15(8-5)=1.45
KF β = 0.18 + 0.82 K 
=0.18+0.821.05=1.041
2 < 350
KFV = 1+ 1.5(KHV 1)=1+1.5(1.02-1)=1.02
s F 1= 3.780.52 
= 293.9 < σ FP 1
s F 2= 
=255,8 < σ FP 2
5 %, .
, s F 1 s FP 1 s F 2 s FP 2.
Ft = 6866
Fr = 2499
3.
|
|
|
1 = 86,7 ͕
n 1= 731,3 -1
u =4
= 0.015
120
-
n c=2
1.
(. 1.3) [1]:
- ;
A =138 2;
b p= 14 ;
qm = 0,18 /.
2.
(1.3) [1]:
d 1 = 40 
= 40*3√86,7=177
d 1 . 77 [1]: d 1= 180 .
:
d 2 = u 
d 1 =4(1-0,015)*180=709,2
: d 2= 710 .
3.
u = 
=710/180*(1-0,015)=4
4.
= 0.8 (d 1 + d 2)=0,8(710+180)=712
5.
L = 2 
+ 0.5 
(d 1 + d 2) + 
=2*712+0,5*3,14*(180+710)+(710-180)2/4*712=2919
.77 [1]:
L = 3000 .
L
= 0.25(L W + 
)=0,25*(3000-1397,3+√(3000-1397,3)2-561800)=754
W = 0.5 
(d 1 + d 2)=0,5*3,14*(180+710)=1397,3
Y = 2 (d 2 d 1)2=2*(710-180)2 =561800
6.
= 
57. 
= 180-57,3*(710-180)/754=139,7
7.
V = 
=3,14*180*731,3/60000=6,8
8.
Ft = 
=2000*86,7/180=963,3
9.
= 
=1000*6,89/3000=2,29
10. , ,
Cu =1.14 
=1,14-0,14/43,8=1,139
11.
= 
0.001 V 2 =5,55/1,1390,09 - 6*141,57 / 1,139*180-0,001*6,82=3,589
12.
[ 
] = 
C 
C p=2,17
C 
, ,
C = 1 0.44 ln 
=1-0,44ln180o/2.17=0.837
C p .
C p = C 0.1(n c 1)=0.85-0.1(2-1)=0.75
C , C =0.85
13.
Z = 
=963.3/2.17*0.95*138
=3.74≈4
z - , (. 3.3) [1], z= 0.95.
Z Z=
14.
S 0 = 0.75 
+ qmV 2=0.75*963.3/4*0.837*0.75+6.820.18=0.287
15. , ,
Fb = 2 S 0 Z sin 
=2*287*4sin(2.17/2)=2.16
