.
:
N = 2kV,
k = 1.05 1.01 , ,
V ;
N = 21.05535,06= 1123.626 .
. . , , . ( ).
: ix/iy = lef,x/lef,y.
. ,
.
lk, :
lk = H1 (t + h) + (0.4 ÷ 0.6),
;
t ;
h ;
(0.4 ÷ 0.6)
.
lk =6 (0.15 + 1)+0,5= 5,35 .
:
lef,x = lkμx; lef,y = lkμy,
μx, μy :
μx = 1, μy = 1;
lef,x = 15.35 = 5.35 ; lef,y = 15.35 = 5.35 .
4.2. .
.
, :
φ , λ, . N =1123.623 , λ = 90, φ = 0.612.
Ry t = 20 30, Ry = 240 ;
γ = 1.
= 38.24 ².
:
, iXmp .
30 t=11
h=300 iy0=3.12
b=100 Ix0=58304
A0=40.5 2 Iy0=3934
ix0=12 z0=2.83
1-1 λ3≤ 40 ds= 150...300,
:
:
,
|
|
b =360
b :
. , x1-x1,
ds= (0.5...0.8) b.
l, , 5t, t - . 6... 12 , :
ts ≈(1/10...1/25) ds,; ls/50.
ds=180
ls=260
ts=10
4.3. .
, Ix, Iy, ix, iy .
;
,
:
,
:
φmin λx λy;
=56.52.
φmin = 0.821, , 16,89 /² <24 /².
.
- , , :
:
,
:
, , Ms Fs ( ):
, 4 . .
4.4. .
, .
kf , 6; =8 ; = 0,9
hf , , 0.6h, h :
, hs ³ 0.6h, ,
N , =180 ;
= 86.69 ,
22.67 , hs.=23
:
ts :
, Q = N/2, Q = 1123.623/2 = 561.81 , Rs=0.58 Ry Rs =13.92
=28
bs .
bs = 280/2=140. bs=140
. :
Rp (. 51*), Rp=Ru, a Ru=360 ;
b ;
b = bs + 2t,
bs ;
t (t=20 );
b = 14 + 22= 18 ,
|
|
1.733, 18
:
, ,
, :
, =33,31 =13,92
.. , =2,8 ,
=13,08 /²
13.45 /2 < 13.92 /2.
, , , .
4.5. .
15
Rb- = 0,85 /2
, . , , .
. .
:
R :
, : 1.1;
R. , ,
15 R. = 8.5 ;
= 0.877 /², = 1281.21 ².
:
,
bf bf=300 ;
ts , 10;
c , 60 80, =70 ;
= 30 + 21 + 27 = 46 .
:
; = 27.852 , L = 52 .
, , .
= 0,47 /².
:
, , : ( 1), ( 2), ( 3), ( 4). , 1.
,
d ;
α ,
..;
.
.
1. :
0,5 d=c=7
= 0.470.57² = 11,515 .
4. :
b = 36 ,
b/a = 1.2, 0.063
M = 0.470.06330² = 26.649 .
3.
d=b1= 300 =30 , a1=8 , α = 0.5, 0.26 0.5
M = 0.470.58² = 15.04 .
2.
=7 , =25.5
=26.443 , =6.75
, ,
M = 0.470,56.75² =10.71 .
:
=26.649 , , , 2.58,
t = 3 = 30 .
, ,
. :
, =180 => = 69.36 ,
, , 18.34 ., 20 .
, .
=10.81 /
ts hm.
Mmax Qmax
.
=345.592 , =86.48
=5.183 /², =6.486 /²,
/², /²,
|
|
4.6. .
. , ,
. .
, .
|λ| - , . 19,20,
|λ| = 400 , |λ| = 200 ;
=7.32
:
, ,
:
,
8
8509-93 40*40*5
:
:
=2.5
ix= i=0,21b b=
: 63x63x5
1. . : , 1998.
2. II-23-81*. / . .: , 1990.
3. 2.01.07-85. / . .: , 1988.
4. 1., 1983.
5. / .., .., .. . .: , 1980.
6. .1. / .., .., .. .; . ... .: .., 1997.