.
1. .
Es190103
ν = b = 26,5103 =7.17
2. ) .
Ared =Ab+ νsp = bf hf + (h-hf)bp+ νsp=116*4.1+(22-4.1)*33.2+7.17*3,14
=10922
) .
hf h-hf
Sred =Sb+ ν Ssp=bf hf + (h- 2) + (h-hf) bp 2 +νsp asp= 1164.1
4.122-4.1
(22- 2)+(22-4.1)33.2 (2) + 7,173,143=14875,62
)
.
Sred 14875.6
yred= Ared = 1092 = 13,6
)
.
y'red= h yred = 22-13.6=8.4
) .
ℓ = yred-asp = 13.6 -3=10.6
) .
b'f (h'f) 3 h'fbp(h-h'f) 3
Ired-Ib + ν Isp= 12 + bf hf (yred - 2)2 + 12 + bp(h-h'f)
h -h'f116(4.1) 3 4.1
(yred - 2)2 + νAsp ℓop2= 12 + 116 4.1(13.6- 2)2 +
33.2(22-4.1) 3 22-4.1
+ 12 + 33.2(22-4.1)(13.6 - 2)2*2 + 7.17 3,14 10.62 =108182,8 4
) .
Ired108182,8
Wred = yred = 13.6 =7954,62
)
Ired 108182,8
W'red = y'red = 8.4 =12878,92
.
1. .
) .
G1=0.03* Gsp =0.03735=22,05
2. .
G2 =0 . .
3. .
G3=0, G5=0 .
.
γsp=1
P= γsp(Gsp-G1)Asp =1(735-22,05)3,14100 = 223,9
4. .
.
PPlop
Gbp = Ared + Ired y; y=ℓop=10,6
223,9103 223,91030,106
Gbp = 109210-4 + 108182,810-8 0,106 =4,4M
.
Rbp = 0.7B=0.720=14
Gbp
G6=40 Rbp 0.85 Rbp < α
Gbp4,4
Rbp = 14 = 0,31< α = 0,65
α=0.65 -20
Gbp
G6=40 (Rbp)0,85= 400,310,85=10,5
Gn1=G1+G2+G5+G6= 20,05+0+0+0+10,5=30,55
.
Gsp1=Gsp-Gn1=735-30,55 = 704,5
.
P1= Gsp1 Asp=704,53,14100=221,2
.
P1 P1lop221,2103221,21030,106
Gbp1= Ared + Ired y = 109210-4 + 108182,810-8 0,106 =
=4,3M<0,95*Rbp=13.3M
.
|
|
|
.
) G8= 35
Gbp4,4
) G9=150α Rbp =1500.65 14 =30,2M
.
Gn2=G8+G9= 35+30,2=65,2M
.
Gn= Gn1+Gn2=30,55+65,2=95,8M
.
P2=(Gsp-Gn)Asp=(735-95,8)3,14100=201
.
1. φf
(b'f bp)h'f(116-33.2)4.1
φf = 0.75 bp h0 = 0.75 33.219 =0.4<0.65
2. φn
N
φn=0.1 Rbtbph0; N=P2=201
201103
φn = 0.1 0.9351060,3320,19 =0,34<0,5
(1+φf + φn)=(1+0.4+0.34)=1.74>1.5
(1+φf + φn)=1.5
3. Mb
Mb=φb2(1+φf + φn)(Rbtbph2)=21.50.9351060.3320.192=33.6
φb2=2
4. .
Mb33.6
0= 0,5Q ≤2h0; C0 = 0.533 =2,04 >0.38
0=0,38
5.
Mb33.6
Qb = C0 = 0.38 =88.4
6. .
Qb=88.4>Q=33 →
3-1.
:
4/2=220/2=110
S1≤ 150
S1=100, ..
Q=0, , ¼ℓ
¼ℓ=¼5980=1495
ℓ=1495
7. .
Q=0.3φwφb1Rbbh0=0.310.911,51060.3320.19=195.9
EsAsw1700000.284
φw=1+5νMw = 1+5 Eb bpS1 =1+5 27000 33,210 =1
Es=170000 - -1
Eb=27000 -20
Asw=nAsw1=40.071=0.2842
n=5. . .
φb1=1-Rb=1-0.0111,5=0,885=0,9
=0,01
Q=33<Q=195.9
.
.
.
mgγfg21009.811.3
Fn= n = 3 =8927
m=2100-
γfg=1.3- .
n=3- .
.
Fn 8927
Asn= Rs = 225106 = 0,3972
O6 -1 s=0,572
.
.
1
. . , ,
4-1 - 200 100
4- 1 -200 200
6000/200=30 30*0.125=3.752
1 .
s= 3,752. .
