●
q = g∙l/cosα = 2,41∙6/1 =15,8
α - ; cosα=1
●
F = q∙ln = 15,8∙3 = 47,6
●
F1 = g∙l∙(5x1,8)+g∙l∙(1x1,8) = 0,438∙6∙7,2+0,55∙6∙1,8 = 24,84
F2 = g∙l∙(2x1,8) = 0,438∙6∙3,6 = 9,46
●
M1 = F1∙e1 = 24,84∙0,75 = 18,63 ∙
M2 = F2∙e2 = 9,46∙0,375 = 3,55 ∙
●
F = l∙g = 6,0∙3,87 = 23,2
()
●
q = S∙l = 1,34∙6 = 8,04 /
●
F = q∙ln = 9,04∙3 = 24,12
●
1)Dmax = yf ∙∑Pk max∙yi∙ψ = 1,2∙0,85 (565,2∙2,799)=1698
Dmin = yf ∙∑Pk min∙yi∙ψ = 1,2∙0,85 (208,8∙2,799)= 593,8
1)T = ∑Tk∙yi∙ψ = 1,2∙0,85 (24,6∙2,799)=70,23
()
●
q1 = w1∙l = 3,5 /
●
q2 = w2∙l = - 2, 2 /
, , . , . 2.2.3 [3], .
,
, ;
;
245 (. .5 [1]);
, , i =1/81/10 ; i =1/15 
; i =0 
.
L .
= /4 = 50/4 = 12,5 2.
2└ 75x75x6, - 2└ 70x70x8. - 2└ 60x60x8, - 2└ 50x50x6.
|
|
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, , , , , (. 2.5).
● h = 1,25 (. 2.5);
● 0,4∙ h = 0,4∙1,25 = 0,5 .
.
● h = 0,5 (. 2.5);
● 0,5∙h = 0,5∙0,5 = 0,25 ;
● h/50 = 0,5/50 = 0,01 ;
● h/60 = 0,5/60 = 0,083 ;
. :
L ;
() ;
d;
, ;
.
. , , , : J/J = 0,080,25; J/J = 2,56,0
.
