. ,.-:
N - e 0,3,, b h ;
--,-0,6();
(%),-, ; -500240;
;-, 1,5 N.
(b < h),--.
.-
, (. . 20) -2/3 H: N =775;- N g =648;- e 0=6,0=
=60; l 0= H = 4,8=4800;
.
. , σ =2,5,:
44 |
A =N /σ =775103/2,5=0,311062. b =510 h =640 A =510640=0,32641062=0,32642(.23).
e 0 = 60 <0,17 h =
=0,17640=109,7.31[7],-.
(),(13)(14)[7]:
σ max = N / (m g φ 1 A c ω)=775103/(10,90,26521061)=3,25,
A c = A (1−2 e 0/ h)=0,3264106(1−260/640)=0,26521062,- m g =1, φ 1=0,9 ω =1.
0,63,25=1,95.
.2[7] 150-75(R =2,0). A = 0,32642> 0,32,, .6.12[7], -.
(31)[7],, R skb =σ max =3,25,:
|
|
Rs =0,6415=249500- γcs =0,6(..14[7]), y = h /2=640/2=320.
45 |
. 23.:
; N ; φ 1;
5(A st = 19,62) s =158(14),,:
c = 2 A st ×100/(μ s)= 2×19,6×100/(0,40×158)= 62
.
46 |
μ = 2 A st ×100/(cs)= 2×19,6×100/(50×158)= 0,496%,
:
μ max=
50 R
(1- 2 e 0/ y) R s
= 50 × 2,0
(1- 2× 60/320)249
= 0,677%.
-(.23, ).
.7.3[7], l 0= H =4800,: λ h = l 0/ h = 4800/640=7,5.
: h c = h − 2 e 0 = 640−260 =520, -: λ h = l 0/ h = 4800/520=9,2.
λ h <10.21[7] η = 0,,-, m g =1.
:
-:
(4)[7]:
α sk
= α R u R sku
= 7504,0
6,98
= 430,
α =750.16[7]; R u = kR =22,0=4; R sku = kR +2 R sn μ / 100= 22,0 +2(0,6500)×
×0,496/100=6,98.
. 19[7], λ h λ h α sk -- φ =0,844 φ c =0,784; φ 1=(φ +φ c)/2=(0,844+
+0,784)/2=0,814.
ω,,.20[7],
ω =1+ e 0/ h = 1+60/640= 1,09<1,45.
:
N u = m g φ 1 R skb A c ω =10,8143,540,26521061,09=833103=833.
b <h,.7.11[7]-,,-.7.30[7].
50 R /R s =502,0/249=0,402%< μ = 0,496%, μ = 0,402%,:
|
|
R sk = R + 2 μR s / 100=2,0+20,402249/100=4,0≤2 R = 4,0;
α sk = 468 φ = 0,794 λ h = l 0/ h = 4800/510= 9,4.
:
N u = m g φR sk A =10,7944,00,3264106=1037103=1037>833.
,- N u =833>775,.
,. 24
-.
a
========================================================================================================================
411 .I K | b | h | C | N(H)O | . | I | |||
.. | I | () | () | d() c() | s() | . | I |
I::::::::::: I 6270310I102.06 51 64 150 75 5 50 158 1 833 5 1494.06 I
=====================I---------------------------------------------------------------------------------------------------------------------------------------------- I
:
b ,:h ,;d ,;
c ,;
s ,;
,2;
N
,;
.
========================================================================================================================
411 .I K b h C N(H)O PI .. I () () d() c() s() .ࠠ I
I 102.06 51. 64. 150. 75. 5. 60. 158. 1. 833. 5. I
I 51. 64. 150. 75. 5. 60. 158. 1. 833. 5. I
------------------------------------------------------------------------------------------------------------------------
BOTHO,
,̻.
. 24. :
;
49 |
1. ..,..::.6-.,..:Ϋһ,2009.768.
2. ..:..-:,2012.304.
3. 63.13330.2012...52-01-2003..,2012.161.
4. 52-101-2003.-(25.12.2003.215)..:,2004.
5. (52-101-2003).,..: ,2005.214.
6. 52-103-2007...:, 2007.22.
7. 15.13330.2012..-II-22-81*..: ѻ,2012.78.
8. 20.13330.2011..2.01.07-85*..:Ϋϻ,2011. 96.
9. .., .., .. . . 1. : . --: , 2009.
|
|
10. 22.13330.2011..2.02.01-83*..:Ϋϻ,2011.166.
11. (2.03.0184)..:,1986.
12. 21.11012009. . .
50 |
I