λmax = 120, ( 14 [4]). 100. λ = 100,
;
;
= 7,5 ;
.
, 275 50 . () 50 7 = 43 . () 275 15=260 .
h=1343=559 ; b=260 , ( ).
.
5.2.
G |
G |
S |
S |
W |
W |
G |
G |
G |
G |
l=l |
q |
q |
5.2
. 1 2 , ( 5.1).
:
G...=γng... ,
L=lp+h+2h.+2,
lp , ; lp = 36 ; h , h =0,559 ; h. , h. =0,158 ; , =0,5 .
5.1 1 2 ,
/ | , /2 | γf | , /2 | |
: | 0,12 0,250 | 1,3 1,14 | 0,156 0,285 | |
[1] | g...=0,370 | 1,17 | g...=0,433 | |
( k=4)[2] | 0,138 0,508 | 1,1 | 0,151 0,584 | |
I Sq =0,8 /2; S μ=1 S=Sq μ=0,8*1=0,8/2; | S =0,448 | S =0,8 |
L = 36+0,559+2·0,158+2·0,5 = 37,875
G... = 1,0·0,433·(37,875/2)·4,5 = 36,89 ;
()
G = γn g = 1,0·0,151·(36/2)·4,5 ≈ 12,231 ;
S = γnS = 1,0·0,8·(37,875/2)·4,5 ≈ 68,175 .
(
g. =0,285 /2).
( ).
|
|
G , , /2;
.
:
= 1,0*1,1*0,559*0,260*7.5*7 = 8.39 ,
, 2,
= 7 /3.
: = 0,38 /2. l × b = 36 × 45 , b = n·B = 10*4,5 = 45 , = + 0,8;
, 3= − 0,6 ( 4[5] .2, ).
H' = H + 0,2 = 7.5 + 0,2 = 7,7 ked =0,792 ( .1, ).
=1,0*1,4*0,38*0,8*0,792*4,5=1,52. /;
=1,0*1,4*0,38*0,6*0,792*4,5=1,14. /.
, , :
= 4,358 .; =12,058 ; =0,903
=1,0*1,4*0,38*0,8*0,903*4,5=1,729 /;
;
=1,0*1,4*0,38*0,6*0,903*4,5=1.297 /;