- 1
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: 4+3=7
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. -403
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, 2012
. L = 6.6 . B=5.4 . g=9 /2.
a=150 .
L0 = L (a/3)2 =6600 (150/3)2 = 6500 .
:
h = L = 6500= 550 ;
b = 0.5h = 0,5*550=280 .
: = g*gf*b*h=251.10.280.55= 4.24 /.
: q =g B=9.03.0 = 27 /.
. :
/ / / =55, =28, 1=2= 0/ /
- Iy = 388208 4.
:
Iy = bh3/12 = 28553/12 = 388208 4.
:
/ / / / 20/ / b = 2.4105 / .
:
= bIy = 2.4105 3.88105 = 9.311010 2 = 9.31 1010/(100010000) = 9310 2 = 93100 2.
:
/ / / / ( L / / / )/ / . .
: = 165 *; Q=102
( , )
Q =(q+P) L0/2 =(27+4.24)6.6/2 ≈ 103
(72 ) (72 ) 0%. .
. , b=28, h=55. : 1=4 , 2=4 . 20. 400, 240. γb2 =0.9. . : M = 16,5 ; Qz = 10.2 . 2- . : 0.3 ; 0.4 .
: / / .. / / / / / / / AS1 = 6.56 2; ASV1 = 0.71 2/ / - o HTML/ : L / / / )/
|
|
No | % . | AS1,2 | AS2,2 | AS3,2 | AS4,2 | ASV1,2 | ASV,2 |
1.II | 0.69 | 10.55 | 0.00 | 0.00 | 0.00 | 1.03 | 0.00 |
1.I | 0.69 | 9.32 | 0.00 | 0.00 | 0.00 | 1.03 | 0.00 |
AS1,AS2,AS3,AS4 - ; ASV1,ASV2 - ; ASV - ; |
. . = 0.25h0 ≈ 0.25(55-4) ≈ 12.75 . zb = h0 x/2 = 51 ≈ 45 . Ns = M/zb = 0.165/0.45 ≈ 0.367 MH = 367 kH = 36,7 = 36700 . As = Ns/Rs ≈ 36700/4000 = 9,16 2.
100 = 1%. .
: / / .
. : - 3Ø22400 s = 11,4 2; 2Ø12400 ( ).
. 0,71 2 1.0 . 0.14 fw = = 0.0722. Ø6240 140 .
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