. , . , .
(. 15) 23360 ( Ø34 b × h = 10 × 8 , l = 25 ). :
10×8×25 23360-78.
, .
b:
B1 = 10N9
ES = 0 ;
EI = 36 ;
B1max = 10,000 + 0 = 10,000 ;
B1min = 10,000 0,036 = 9,964 ;
b2 = 10h9
es = 0 ;
ei = 36 ;
b2max = 10,000 + 0 = 10,000 ;
b2min = 10,000 0,036 = 9,964 ;
B3 = 10Js9
ES = + 18 ;
EI = 18 ;
B3max = 10,000 + 0,018 = 10,018 ;
B3max = 10,000 0,018 = 9,982 .
.22.
() b:
b2 = 10h9 B1 = 10N9
S1max = B1max b2min = 10,000 9,964 = 0,036 ;
N1max = b2max B1min = 10,000 9,964 = 0,036 ;
.23.
b2 = 10h9 B3 = 10Js9
S2max = B3max b2min = 10,018 9,964 = 0,054 ;
N2max = b2max B3min = 10,000 9,982 = 0,018 ;
.24.
h:
t1 = 5+0,2 ( 23360);
t1max = 5,200 ;
t1min = 5,000 ;
h = 8 h11;
hmax = 8,000 ;
hmin = 7,910 ;
t2 = 3,3+0,2 ( 23360);
t2max = 3,500 ;
t2min = 3,300 .
Smax = t1max + t2max hmin = 5,200 + 3,500 7,910 = 0,790 ;
Smin = t1min + t2min hmax = 5,000 + 3,300 8,000 = 0,300 .
l = 25 :
l1 = 25 h14 ( 23360);
l1max = 25,000 ;
l1min = 24,480 ( 25346);
L2 = 25 15 ( 23360);
L2max = 25,840 ;
L2min = 25,000 ( 25346);
Smax = L2max l1max = 25,840 24,480 = 1,360 ;
Smin = L2min l1min = 25,000 25,000 = 0,000 .
. 25.
|
|
, :
d D ;
t1 ( ) d t1 ;
d + t2 ;
;
( );
, (. .22).
Ra 6,3 .