.
-
; 1:1 .
;
- 
=160
; ; ℓ=74
:
-
1= 1.2 δ=1.2 
8 =9.6 = 10
- = δ = 8
- = δ=8
ℓ1= 62 ; ℓ = 60
ℓ2= 63
ℓ= 124
3 ϳ ([3], . 27)
| d | D | ||||
| , | 0 | ||||
| 35.1 | 19.8 | ||||
| 17.8 |
3
I :
Ft=2811 H Fr= 1057.028 H Fn= 700.782 H
F= 1405.5 d1= 64
:
ℓ1 = 62 ℓ= 60
:
xz:
∑ MA= 0
RX2= 
∑ MB=0
RX1=
yz
∑MA=0
F ℓ Fa 
+ F2 ℓ1 Ry2 2 ℓ1 = 0
Ry2 = 
∑ MB = 0
Fr ℓ1 Fa + Ry1 2 ℓ1 F (ℓ+2 ℓ1) = 0
Ry1= 
∑Fiy=0
F + Ry1 Fr + Ry2=0
+ 
+(
)=0
2.3
x ( )
MXA= F ℓ = 1405.5 0.06 = 84.33
M= 0
i= F (ℓ+ ℓ1)+ Ry1 ℓ1= (0.06+0.124)+(2794.98 0.062) =
85.323
= Ry2 ℓ1= 20.610
= 0
( )
= 0
= 0
= Ft ℓ1 R1 2ℓ1= 2811 0.062 1405.5 0.124= 174.282 174.282=0
i= R1 ℓ1= 1405.5 0.062= 87.141
=Rax2 ℓ1= 1405.5 0.062= 87.141
z:
z= T1= 89.952
i
P1=Pr1= 
Rx12+ Ry12 = 
(3)
P2=Pr2= Ry22+ RX22= 
(4)
ϳ ( )
Pe= (XVPr+YFa)K 
KT (2 . 9.18 . 212)
³ 
= 0.23
³ 
³ 
, .
|
|
|
= 0.56 = 1.85 ( [2], . 9.18)
v = 1 K =1.2 ( [2], . 9.19)
KT = 1.05 ( [2], . 9.20, . 214)
= (0.56 1 2796.338+ 1.85 700.782) 1.05 1.2= 3606.624
.
L= 
= 698.538 .
L h = 
58211.5 
34143
F t = 2811 H
Fr= 1057.028 H
Fa= 700.782 H
F = 125 
ℓ2= 63
ℓ= 124
2.2
:
xz:
∑= 0
Ft 
ℓ2+ Rx4 2ℓ2 FM (ℓM+2 ℓ2)= 0
Rx4= 
∑=0
FM ℓM Ft ℓ2 Rx3 2 ℓ2=0
Rx3= 
∑Fx=0= Rx3+ Ft+ Rx4 FM= 0
= 3682.405+2811+3185.032 2313.628=0
yz
∑= 0 = Fr ℓ2 Fa Ry4 2 ℓ2=0
Ry4= 
∑ MB = 0= Fa + Fr ℓ2+Ry3 2ℓ2= 0
Ry3= 
∑Fy=0 = Ry3+ Fr+ Ry4=0 = 183.389 + 1057.028 1240.42=0
x ( )
MXA= 0
M= 0
i= Ry3 ℓ2= 183.389 0.063= 11.55
= Ry4 ℓ2= 1240.42 0.063= 78.15
= 0
y ( )
( )
= 0
= 0
= F ℓM = 2313.628 0.124= 286.889
i= Rx3 ℓ2= 3682.405 0.063= 231.99
= Rx4 ℓ2 F (ℓM+2 ℓ2)= 3185.032 0.063 2313.628 0.187= 231.99
z:
z= T2= 342.584
i
Pr3= Rx32+ Ry32 = 
(3)
Pr4= Ry42+RX42= 
(4)
ϳ ( )
Pe= (XVPr+YFa)K KT (2 . 9.18 . 212)
³ 
= 0.23
³ 
³ , .
= 0.56 = 1.85 ( [2], . 9.18)
v = 1 K =1.2 ( [2], . 9.19)
KT = 1.05 ( [2], . 9.20, . 214)
= (0.56 1 
+ 1.85 700.782) 1.05 1.2= 4235.05
.
L= 
= 569.23 .
L h = 
L h
4. ' ( [1],. 8.9, .169)
.
d1=32 ; bxh=10x8 ; t1= 5 ; ℓ=40
.
d2= 55 ; bxh=16x10 ; t1= 6 ; ℓ=63
: d=45 ; bxh=14x9 ; t1= 5.5 ; ℓ=70
. .
.
³ ℓ2 ,
.
³ ℓ3 , d2
3-4 .
|
|
|
1. .. . .:, 1987 416
2. .. . .: , 1991-432
3. , .: ., 1996
