, , , , . . , , . , , , . .
(. 3):
2, 3, 4, 6 1, 5 ; 7 q = 250 (. 3);
7 q = 700 , , 2, 5 6 (. 3 );
2 6 7 q= 150 (. 3);
2, 3 4 , 7 q = 150 (. 3).
:
= + G + 2 / u (1)
Pb = Pk + Gtc + 2Pk / u , (2)
, ;
GTC (, , ), ;
u ( );
... .
, , ,
=( + G) / + / u, (3)
G , ;
, = 2, = 4.
, :
: =P(tg tg ) / u, (4)
= tg / u - tg / u, (5)
: - ).
, , , .
, (6): = kGtg / 2, : k -, ℓ; G , , ; , =2 - 4.
, , - , . , : q = v 2 / 2,
|
|
v , /; = 1,225 /3 .
, 270 1000 . 26-02668 ( ), :
q = = 700 ;
q = 250 ;
q = 150 - .
:
. = q * i * Si *m, (7)
q - , ;
i- , , :
, | < 10 | |||
i | 1,0 | 1,25 | 1,55 | 2,1 |
= 2 - , ;
m , :
m = 1,4;
m = 1;
Si - ,
Si =Fi * ,
F i ; = 0,15 0,2 - , =1).
15 , , .
7. 2. , BM-42-I40 ; 2503 ; d = 127, ℓ = 2300 , 1 q = 260 /; ℓ = 200 , d = 178 , q = 1560 /; = 1,2 /3 = 7,85 /3.
.
(2) . , :
- ,
= 260*2300 + 200*1560 + g*1,2* *(0,1782*200 + 0,1272*2300)/4 = 910352,6
= 0,91 .
- ,
GTC = G + ⅔G = 12700 + ⅔ 10880 = 19953,3
G=12,7 4-140;
G = ℓ * q; ℓ = ℓ* u 45 ; ℓ = 40 = ; u = 8- ; q = 34 / ( d = 28 ). : G = 40*8*34=10880 .
- . . . = 1 0,02*u = 1 0,02*8=0,84
- , :
Pb = Pk + Gtc + 2Pk / u = 910000 + 19953 + 2*91000/8*0,84 = 957036,3;
Pb = 0,95 .
8. 3. , , , , : 3 7 ; h = 45 .
|
|
:
- (4):
=P(tg tg ) / u
= 0,91 = 910 , u = 8 (. ). , :
= 910(7/45 3/45) / 8 = 10,12
- (5), :
= tg / u - tg / u.
= 910 * (7/45) / 8*0,84 910*0,84(3/45)/8 = 14,69.
9. 4. , -42-140. q = 700 , h=45 , h1 = 10 , h = 5 , h = 24 4 ; .
.
(7)
. = q * i * Si *m, (7)
q - , ;
i- , , :
, | < 10 | |||
i | 1,0 | 1,25 | 1,55 | 2,1 |
= 2 - , ;
m , : m = 1,4; m = 1;
Si - , Si =Fi * ,
F i ; = 0,15 0,2 - , =1).
: S1 = 100 2, S2 = 80 2, S3 = 20 2, S4 = 54 2; ; 1 = 3 = 1; 2 = 4 = 0,15; 1 = 1,2; 2 = 1,4; 3 = 1,45; 4 = 1,8; m2 = 1,4; m4 = 1,0 ( ).
, :
.1 = q * 1 * S1 *m = 700*1,2*2*100 = 168;
.2 = q * 2 * S2 *m = 700*1,4*2*0,15*1,4*80 = 33;
.3 = q * 3 * S3 *m = 700*1,45*2*20 = 40;
.4 = q * 4 * S4 *m = 700*1,8*2*0,15*1*54 = 20.
, , :
. = 168 + 33 + 40 + 20 = 261.
10. ( )
- , BM-42-I40 ;
- ,
- ,
:
, | , | ||
. 1. . 2. ( ). |
2, 3, 4.