Post on 04-Jun-2018
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1
1-1 2-2.
V600 0.6- , 0.2 . 2.0.
1.5. 100kN; Kd=1.4-0.008l
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1-1
=0,3 kN/m =0,050,525=0,63 kN/m
=0,260,225=1,46 kN/m
=0,10,2125=0,53 kN/m
=0,280,2525=1,75 kN/m
=0,720,0525=0,9 kN/m
=0,720,0221=0,3 kN/m
=1 kN/m
=1,10,5(0,15+0,12)/225=3,71 kN/m
g1-1=10,57 kN/m
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2-2
=0,90,0624=1,3 kN/m
=0,01160,9=0,14 kN/m
=0,150,925=3,38 kN/m
=0,20,9/225=2,25 kN/m
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1-1
Mg=-(0,31,03+0,63 1,14+1,46 0,1+0,53 0,25+1,750,98+0,9 0,53+0,3 0,53+3,71 0,5+1 0,49)=
=-6,41 kNm/m
MP=-51,00,5=-2,5 kNm/mMu=1,6(-6,41)+1,8(-2,5)=-14,324kNm/m
2-2
Mg=-6,14-
(1,30,45+3,380,45+2,250,3+0,140,45+10,570,9==18,50kNm/m
Mp=-5,01,4=-7,0 kNm/m
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b1=0,6+20,16=0,92m
b2=0,2+20,16=0,52m
F=1001,384=138,4 kN
1-
beff=21,5+0,52+20,6=4,72
mMp=-
3138,40,6/4,72=52,78 kNm/m
2-
beff=1,5m
Mp=-138,40,6/1,5=55,36kNm/m
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Mu=-(1,618,5+1,8(7+55,36))=-141,85 kNm/m
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2
. 600 0.6- , 0.2 . 2.0. 1.5.
100kN;
Kd=1.4-0.008l . 3.5kN/m. ().16kN/m3; 24 kN/m3. .
.
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-
=3,5 kN/m
=2,6+0,15=2,75 m
=0,0624=1,44 kN/m2
=(2,6-0,15)/2=1,225 m
=0,0116=0,16 kN/m2=(2,6-0,15)/2=1,225m
=0,10,1525=0,375 kN/m
=2,6+0,075=2,675 m
= 2,75(0,25+0,4)25=22,344 kN/m
=2,75(20,25+0,4)/(3(0,25+0,4))= 1,27 m
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:dp=0,283m
=2,15 m
b1=0,6+(0,06+0,01+0,
283/2)=1,023m
b2=0,2+(0,06+0,01+0,283/2)=0,623m
beff1=b2+2a=0,623+22,15=4,293m>1,5m
beff1=1,5m
,
:dp=0,392m
=0,225 m
b1=0,6+(0,06+0,01+0,392/2)=1,132m
b2=0,2+(0,06+0,01+0,392/2)=0,732m
beff2=b2+2a=0,732+20,225=1
,182m
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Mg=-(3,52,75+(1,44+0,16)2,451,225+0,3752,675 +
22,3441,27)=-43,81 kNm/m
=-( 137,82,15/1,5+3/4137,80,225/1,182)=
= -217,19 kNm/m
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Mu=-(1,643,81+1,8217,19)=-461,04 kNm/m
a=1,5+2,2/2=2,6 cm
h=40-2,6=37,4 cm
R22/10
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: d=25cm : dhi=1cm
hi=16 kN/m3
: da=7cmga=24 kN/m3
Tandem
: 0.4m x 0.4m
: 150kN
(300kN po osovini)
45 : 12m
: 0.5Mpgr
: 0.7Mpgr
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:
: g=0.25*25=6.25kN/m2
: ga=0.07*24=1.68kN/m2
: ghi=0.01*16=0.16kN/m2
g = 6.25+1.68+0.16=8.09 kN/m2
:
tandem 150kN:
: - :b1=0.4+2x(0.07+0.01+0.25/2)=0.81m
- :
b2=0.4+2x(0.07+0.01+0.25/2)=0.81m
beff=b2+l*Ap/A=0.81+6x0.35=2.91>2.0 ( )
beff=2.0 m
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:
b1=0.81, .
: P=150/beff=75kN/m
: 3m9kN/m2
2.5kN/m2
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Mg=8.09*62/8=36.405 kNm/m
:
1. :
Mp=183.20Nm/m
2. :
Mp=179.94 kNm/m
.
l=6.0 m
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:
:Mu=1.6*36.405+1.8*183.2=384.808 kNm/m
:
Mup=0.5*Mu=192.404 kNm/m
Muo=0.7*Mu=269.360 kNm/m
:d=25cm, ( R19):
a=1.5+1.9/2=2.45cm
h=25-2.45=22.55cm
Fa=Mu/(0.9*h*v)=192.404*100/(0.9*22.5*40)=23.7cm2/m (R19/10)
:
A=28.34cm2
:
h=Mu/(0.9*Fa*v)=269.36*100/(0.9*28.34*40)=26.4cm
( )
hv=26.4-22.55=3,85cm
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:
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:
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1
1 1
M M i ii
a IR R
a I
(1)
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0M
11 1 2 2 ....
2M M M
i i
aR a R a R a (2)
1 22M i ii
i i
a a IR a I
(1) (2)
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P Mi iR R
-
1,1 22
i i ii
i i i
I a a I
I a I
-
-
, 22i k i i
i k
i i i
I a a I
I a I
, 2
1
2k i
i k
i
a a
n a
1
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1
Kd=1.25
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0.64 0.88 0.14 0.38 0.64 0.142.90 (0.88 0.38) 1.20 (0.64 0.14) 1.80 2 1.80 2 2 6.50
2 2 2ip
7.10 /ip kN m.
. 0.46 0.38 0.12 0.04 0.38 0.122.90 (0.46 0.04) 1.20 (0.38 0.12) 1.80 2 1.80 2 2 6.50
2 2 2srp
7.10 /sr
p kN m
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119 (0.58 0.34) 109.50P kN
2
0.64 0.883 2 0.5 0.28 2.33 3 5.54 /
2
p kN m
1 2
0.64 0.283 5.95 13.75 /
2
p p kN m
( )
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( )
119 (0.36 0.28) 76.16P kN
.
20.38 0.46 0.26 0.043 2 3 5.50 5.02 /
2 2p kN m
1 2
0.38 0.265.95 3 10.73 /
2p p kN m
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