4.1(4.1). :
;
.
:
) ;
) .
, , ( , ) gf = 1,0, , . , .
, , , m > 0,005.
4.2(4.5).
r < crc, (233)
r ¾ , , , , , ;
crc , , ,
Mcrc = Rbt,serWpl Mshr, (234)
Mshr ¾ Nshr , , r; ("" ¾ , "" ¾ shr r ).
crc
Mcrc = Rbt,serWpl ‑ Nshr (eop + r). (235)
Nshr ; :
Nshr = sshr (As + A¢s); (236)
, (237)
sshr ¾ , , : 35 40 35 ¾ ; sshr 2.03.01-84 (. 5, . 8);
s, ¢s ¾ S S¢.
m < 0,01, (234) (235) Wpl r , Nshr = 0 As = A's = 0.
Mr :
(. 83, )
r = ;
(. 83, )
Mr = N (eo ‑ r), (238)
- (. 83, )
Mr = N (eo + r), (239)
(234), (235), (238) (239):
|
|
r , , .
r :
; (240)
(241)
0,7 1,0;
sb , ;
-
, (242)
Wpl ¾ , .4.3.
. , , .