8.2.8 r 8.2.14.
, , , 8.2.10 - 8.2.12.
8.2.9 8.2.11, (8.121) Wpl = Wred. (8.118) (8.139) , .
8.2.10 :
;
, ( 8.17);
, Rbt.ser;
ε bt,ult
(8.1.30); ε bt,ult = 0,00015;
.
8.2.11
Mcrc = Rbt.ser × Wpl N × ex, (8.121)
Wpl - , 8.2.10;
- N ( ) , , .
(8.121) N, - .
0138S10-03623
1 -
8.17 - - (), ()
, , Wpl
Wpl = 1,3 Wred,(8.122)
Wred - , 8.2.12.
8.2.12 Wred :
(8.123)
(8.124)
Ired -
Ired = I + Is × α + I's × α; (8.125)
I, Is, I's - , ;
|
|
Ared - ,
Ared = A + As × α + A's × α; (8.126)
α-
A, As, A's - , ;
t -
St,red - .
Wred .
8.2.13 Ncrc
Ncrc = Ared × Rbt,ser. (8.127)
8.2.14 , 6.1.24 8.1.20 - 8.1.30, , 6.1.22. .
r , 8.1.20 - 8.1.30, ε bt ,max , ε bt,ult, 8.1.30.