03
| . |
| ϳ . |
| . |
| 5.06010101 03 . |
| . |
| . |
| . |
| ˳. |
| . |
03
:
1. :
1-
| , , | L1, | t, | p n, / 2 | tn, | ||
(: 1, 1)
1. .
| . |
| . |
| ϳ |
| 5.06010101 03 |
2. 1 
2- 1 2
| , /2 | ,
( f)
| , /2 | |
| : - - |
q1x= t1 *  1=
q2x= t2 * 2=
|
 f1=
f2=
|
q1= q1x *  f1=
q2= q2x * f2=
|
| : | ∑qx=q1x+q2x = | ----------- | ∑q=q1+q2 = |
| p n = |  f=
| p = | |
| : | qn=∑qx+ p n = | ----------- | qr = ∑q + p = |
| . |
| . |
| ϳ |
| 5.06010101 03 |
3.
3.1. :
max= 
= /;
3.2. :
Qmax= 
= 
.
2. .
4. .
Wx = 
3,
1-, , 1 =1,1
Ry - . _______ _____ Ry =_________ ( 6)
γ , γ =______( 7).
5. .
( 5) __
| . |
| . |
| ϳ |
| 5.06010101 03 |
|
|
|
3-
| h | ∙10-3 | |||
| b | ∙10-3 | |||
| d | ∙10-3 | |||
| t | ∙10-3 | |||
| A | 2 | |||
| 1 | m | |||
| Sx | 10-6 | 3 | ||
| Wx | ∙10-6 | 3 | ||
| Ix | ∙10-8 | 4 |
| . |
| . |
| ϳ |
| 5.06010101 03 |
3. .
6. . :
qn1= qn +(t*m)= /;
q= qr + (t*m* γf) = /;
γf , . γf=_________( 9)
7. :
7.1. :
max1= 
= 
,
7.2. :
Qmax1= 
= .
8. .
8.1. :
σ = 
< Ry ∙ γ,;
| . |
| . |
| ϳ |
| 5.06010101 03 |
σ=
8.2. :
τ= 
< Rs , . Rs = 0,58∙ Ry=
τ=
9. .
fmax = 
,
fmax =
: (4).
fmax≤ fu
fu - ( 3).
:_______________________________________________________.
.
1.1. :
2-
| / | ||||
| L1 | ||||
| p n, | p n | / 2 | ||
| γf | 1,2 | |||
| : | ||||
| 235 32 380-71 | ||||
| 235 32-1 380-71 | ||||
| - | tn | 0,01 | ||
| ρ | /3 | |||
| ϳ - | tp | 0,04 |
1.
г , (.1,, )
1.1.1. 1 :
qn=(pn+gn+ gn)∙=(22+0,72+0,785)∙1=23,5/,
pn - ; pn =22 /2
gn ;
tp =0,04- ;
ρ =1800 /3- .
g n= tp ∙ρ = 0,04∙1800∙10-2=0,72 /2
g n- ;
|
|
|
tn =0,01- ;
ρ =7850 /3- .
g n= tn ∙ ρ =0,01∙7850∙10-2=0,785 /2
1.1.2. 1
q1=(pn γfI+gn γfII + gn γfIII)∙=(22∙1,2+0,72∙1,3+0,785∙1,05)∙1=28,09 /,
: γfI , γfII, γfIII ( 10, 5.1 2.01.07-85).
1.1.3. ( 1)
:
max= 
=(28,09∙62 )/8=126,4 /;
:
Qmax= 
= 
=84,3.
2.
1.1.4. .
Wx ≥ 
= 
=457∙10-6 3,
1-, , 1 =1,1;
Ry - . 235 220 Ry =230 ( 7)
γ , γ =1,1.
1.1.5. .
( 6) 33 8239-72.
3-
| h | 330∙10-3 | |||
| b | 140∙10-3 | |||
| s | 11,2∙10-3 | |||
| t | 7∙10-3 | |||
| A | 53,8 | 2 | ||
| 1 | m | 42,2 | ||
| Sx | 339∙10-6 | 3 | ||
| Wx | 597∙10-6 | 3 | ||
| Ix | 9840∙10-8 | 4 |
2. .
1.1.6. . :
qn=23,5+(0,01∙42,2)=23,93 /;
q=q1+ tm γf = 28,09+(0,01∙42,2∙1,05)=28,53/;
γf , .
1.1.7. :
max= 
= 
=128,4,
Qmax= 
= 
= 85,59.
1.1.8. .
:
σ = 
= 
= 196 < Ry ∙ γ =230∙1,1=254 ;
:
τ= 
= 
= 42,12 < Rs = 0,58∙ Ry =0,58 ∙ 230 ∙ 1,1=146,7 .
.
1.1.9. .
fmax = 
= (5/384) ∙ (23,93∙10-3 ∙64)/(2,06∙105 ∙9840∙10-8) = 0,02 < 
= 
= 0,03.
- 6 ;
(5).
1.1.10. .
q=q..+q..=7850∙0,01+42,2/1=120,7 /2≈121 /2
1.1.11. : , .
1
1 :
| ,, | L1, | t, | p n, / 2 | tn, | ||
| , , | 6,0 | 32 | ||||
| , , | 4,8 | 1,5 | 36 | |||
| , , | 5,1 | 2,5 | 35 | |||
| , , | 5,4 | 36-2 | ||||
| , , | 5,5 | 1,5 | 35-1 | |||
| , , | 4,2 | 2,5 | 36-1 | |||
| , , | 5,0 | 35-1 | ||||
| , , | 5,2 | 1,5 | 36-2 | |||
| , , | 5,3 | 2,5 | 35-1 | |||
| , , | 4,9 | 32 |
: - 2; 1, 3, 5; -4, 6
|
|
|
2-
| , , /3
| ||
| 1800-2100 | ||
| 1800-2500 | ||
3 1
4
5
6 1
