.
:
,
Ft2=Fa1=2T2/d2 = 2×113×103/160=1412,5
,
Ft1=Fa2=21d1 = 2×11,3×103/32=706,25
Fr2=Fr1=Ft2 tg α = 1412,5×0,36=508,5
.
l2=184 ; d= 160
:
:
:
RD = = √353,1252+131,422=√141968,58=376,787
RE = = √353,1252+377,0762= 516,61
(9.9)
S3= 0,37×376,767=139,41
S4= 0,37×516,61=191,1457
= 0,37 (. . 9.18)
(. . 9.21)
S3 < S4; Pa3 = Fa2 ≥ S4 - S3; 3 = S3;
4 = S3 + Fa2 =
7207. , .
4/r4 =1551,91/191,1457=8,12;
(9.5); V= 1; K = 1,3 =1, Y=0,87 = 0,41 (.. 9.18 7);
4 = (0,41×516,61×1+0,87×1551,91)×1,3=2031= 2,03
, .., (9.1)
L = (/ 4)3 = (38,5/2,03)3≈6751 ..
C= 38,5 (..375)
,
Ln = L 106/60n =6751×106/60×1444=77920,13
n = 1444/ -
6. .
≈ 2
(10.1) - ,
∆t = tM - tB = P(l-η)Kt A≤[∆t]= = > [∆t]=
= - ,
Kt = /(2 Ѱ)
[∆t]=
∆t .
∆t/[∆t] =,
. .
. - , , , , ' .
- , , , . ; .
|
|
. . .
. . III . . .
. .
, .
: b h 1 = × × ,
b h 1= × ×
b h 1 = × × .