. -, . : , - .
. 6.
. 6.
(. 6) F :
F = (P 1 + P 1) + (2 + 2) cos a 2 + (3 + 3) cos a 3 +
1, 2, 3, - ;
1, 2, 3 - , -.
2.8.
Q, ,
Q = kNc = 3*1220 = 3660
- , 3,0; 2,75; 2,50 2,00, I, II .
l 2, ,
l 2 = 87 r 4 Nc = 87*1*6,1 = 531
r - , 1,00; 0,88; 0,76 0,64, I, II
III.
200 .
, ,
d = st Nc = 1*1,75*34,9 = 61,1
s - , 1,00; 0,94; 0,88 0,82, I, II III;
t - , 1,75; 1,55; 1,35, , .
2.9.
, . , . , .
V D :
Ek = DV 2 /2 = 12700*0,162/2 = 162,6
:
= l 2/8d2 e = 200*4722/8*462*37= 71
|
|
l - ,
p - ;
d - ;
e - (e - 37 /2).
, :
V = /2 l / Dd2 e = 720/2 200/12700*462*37=0,16 /