, - , . , , , , , (. 10,), .
, - .
, , :
) a, b, c, h, φ, Astr;
) g;
) σsp = 70 ¸ 100 ;
)
0,8 ;
10 - : - ; ; -
: 600 b ´ h= 2550;
q = 50 /, 23 /; 70 /.
, ; ; 25; 4 Æ 22 A-III
(As = 15,2 2), 2 Æ 14 A-III (A1s = 3,08 2), ; -1 8 = 2 (Asw = 0,503 2) s = 20 s = 30 , 3 (= 3 ), - 2,5 ( = 3 ); ho = 47 .
: , , [1]: Rb= 14,5 , R bt = 1,05 , R.s = Rsc= 365 , Rsw = 175 , nb2 = 0,9, xR= 0,551.
= nb2Rb× b × x(h0 0,5x) + Rsc A1s(h0 -- a1);
x =
M = 0,9 (100) 14,5 ´ 25 ´ 13,56 (47,0 -- 0,5 ´ 13,56) = (100) 365 ´ 2,26 (47,0 -- 3,0) = 22739606 × c = 227,4 ×.
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Q = Qb + Qsw,
Qb =
q1 = q = 50,0 / 0,56qsw = 49,28 /;
Qb= Qb,min = 74,0 ;
Qb,min = jb3(1 + jf) Rbt b h0 = 0,6 ´ 1,05 (100) 25 ´ 47 = 74020 = 74 .
Qsw = qsw c0,
c = 1,52 > c0 = 1,12 > 2h0 = 0,94 ;
c0 = 2h0 = 0,94 ;
Qsw = 92,75 ´ 0,94 = 87,2 ;
Q = 76,3 + 87,2 = 163,5 .
, Q:
M > Mmax, Q > Qmax
Mmax = Qmax = 70 ´ 3 = 210,0 .
, .
. , , .