, .
:
:
.2.1 [2] α = 1,51 k = 7.
260 , k = 8.
:
.
∑i2= 12 + 22 + 32 + 42 = 1682 + 1202 + 722 + 242 = 48384 2.
, =8.
.3.7.2.1
:
3.8
, . , .
V:
Rp = Ru = 360 ( ), .51* [1].
bd = 40 . :
, td = 16 .
.3.8.1.
:
:
≤ 1,5td = 1,51,6 = 2,4 . = 20.
, , . As
z :
φ = 0,961
λz = hw/iz= 184,4/8,91 = 20,70, .72 [1];
As ( );
iz
. . , 85bf kf.
n = 2 .. ;
bf = 0,7 . 34* [1];
bz = 1 . 34* [1];
g wf = g wz = 1 - , ;
Rwf = 200 , 56 [1]. 08;
Rwz = 0,45Run = 166,5 ;
Run = 37 /2 , .51* [1].
|
|
:
βf Rwf = 0,7200 = 140 ;
βzRwz = 1166,5 = 166,5 ;
.
kf= 12 .
.
- .