q = Q.../L
, Q... - , /;
L , .
L = l1-2 + l2-3 + l3-4 + l4-1
, li i- , .
L = l1-2 + l2-3 + l3-4 + l4-1 = 300 + 275 + 215 + 195 = 985 ().
q = Q.../L = 109/985 = 0,11(/)
q i = q ∙ li
, q , /;
li i- , .
q 1-2 = q ∙ l1-2 = 0,11 ∙ 300 = 33 (/)
q 2-3 = q ∙ l2-3 = 0,11 ∙ 275 = 30,25 (/)
q 3-4 = q ∙ l3-4 = 0,11 ∙ 215 = 23,65 (/)
q 4-1 = q ∙ l4-5 = 0,11 ∙ 195 = 21,45 (/)
:
Q... = ∑ q i=33+30,25+23,65+21,45=108,35(/)
.
, / | ||||
. | ||||
1-2 | q 1-2 = q ∙ l1-2 | 0,11∙ 300 | ||
2-3 | q 2-3 = q ∙ l2-3 | 0,11∙ 275 | 30,25 | 30,2 |
3-4 | q 3-4 = q ∙ l3-4 | 0,11∙ 215 | 23,65 | 23,6 |
4-1 | q 4-5 = q ∙ l4-5 | 0,11∙ 195 | 21,45 | 21,4 |
q. n = 0,5 ∙ ∑ q i
, q i n - , /.
q1 = (q1-4 + q1-2)/2 = (21,4 + 33)/2 = 27,2
q2 = (q1-2 + q2-3)/2 = (33 +30,2)/2 = 31,6
q3 = (q2-3 + q3-4)/2 = (30,2 + 23,6)/2 = 26,9
q4 = (q3-4 + q4-1)/2 = (23,6 + 21,4)/2 = 22,5
, / | ||||
. | ||||
q1 = (q1-4 + q1-2)/2 | (21,4+33)/2 | 27,2 | 27,2 | |
q2 = (q1-2 + q2-3)/2 | (33+30,2)/2 | 31,6 | 31,6 | |
q3 = (q2-3 + q3-4)/2 | (30,2+23,6)/2 | 26,9 | 26,9 | |
q4 = (q3-4 + q4-1)/2 | (23,6+21,4)/2 | 22,5 | 22,5 |
100 (2, .8.4.6).
4.
hi = 1000i ∙ l i/1000,
1000i -
hi = Ai ∙ l i ∙ q2 ∙ Kn.
A ;
Kn
V > 1.2 / Kn = 1.
V = 1,03 / Kn = 1,03.
V = 1,19 / Kn = 1.
.. . , .
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4.
, | , / | , | , / | 1000 i | , | h, | ||||
1-2 | 47,0 | 0,93 | 5,79 | h = 1000i ∙ lI /1000 | 5,79 ∙ 300/1000 | 1,74 | 6,12 | |||
2-3 | 20,7 | 0,64 | 3,80 | 3,80 ∙ 275/1000 | 1,06 | |||||
3-4 | 5,6 | 0,69 | 10,6 | 10,6 ∙ 215/1000 | 2,28 | |||||
4-1 | 7,0 | 0,55 | 5,36 | 5,36 ∙ 195/1000 | 1,04 |
. .. - 5 < h < 5, .
1 : I 1-2-3; II 1-4-3:
I: hI = h1-2 + h2-3 = 1,74+1,06 = 2,8 ()
II: hII = h1-4 + h4-3 = 1,04+2,28 = 3,32 ()
:
h =(hI+ hII)/2 = (2,8+3,32)/2 = 3,06 ()
Q = Q. . + Q.
Q = 157 + 77,5 = 234,5 /
.
2,5 /
5.
, | , / | , | , / | 1000 i | , | h, | ||||
1-2 | 101,4 | 1,05 | 4,64 | h = 1000i ∙ lI /1000 | 4,64∙ 300/1000 | 1,39 | 7,01 | |||
2-3 | 65,1 | 1,29 | 10,7 | 10,7∙ 275/1000 | 2,94 | |||||
3-4 | 50,0 | 1,01 | 6,74 | 6,74∙ 215/1000 | 1,45 | |||||
4-1 | 12,6 | 0,69 | 6,31 | 6,31 ∙ 195/1000 | 1,23 |
. : Vi< V = 2,5 /.
:
I: hI = h1-2 + h2-3 = 1,39+2,94 = 4,33 ()
II: hII = h1-4 + h4-3 =1,23+1,45= 2,68 ()
h =(hI+ hII)/2 = (4,33+2,68)/2 = 3,5 ()
:
(2,.8.21), , 3 (2, .8.10), , , 0,5 (2, .8.42). 2,5 (2, . 8.16), 5 , (2, .8.16), (2, .8.16); (2, .8.63).
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