Dimensiondare sisteme rutiere
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Transcript of Dimensiondare sisteme rutiere
Dimensionarea sistemelor rutiere nerigide
Sistem rutier 1:
- 10cm macadam
- 30cm piatra sparta
- 20cm balast
E
1
13000
N
cm
2
:=
E
2
8000
N
cm
2
:=
E
3
6000
N
cm
2
:=
h
1
10
cm
:=
h
2
30
cm
:=
h
3
20
cm
:=
D
34
cm
:=
E
0
1000
N
cm
2
:=
Modulul de deformatie echivalent necesar al sistemului rutier se stabileste cu relatia:
E
echnec
p
p
2
l
K
m
daN
cm
2
p - presiunea de contact dintre roata si imbracaminte data de vehiculul etalon;
- deformatia critica relativa;
K - factor de trafic;
- coeficient de siguranta pentru neuniformitatea conditiilor de lucru a complexului rutier
l
0.06
:=
p
50
N
cm
2
:=
p
3.14
:=
m
1
:=
K
0.5
0.65
log
2
300
(
)
+
2.306
=
:=
E
echnec
p
p
2
l
K
m
3.017
10
3
N
cm
2
=
:=
Etapa I
Eech
str1
E
3
0.44
2640
N
cm
2
=
:=
h
3
D
0.588
=
E
0
E
3
0.167
=
=>
Eech
3
E
3
0.44
Etapa II
Eech
str2
E
2
0.525
4200
N
cm
2
=
:=
h
2
D
0.882
=
Eech
str1
E
2
0.33
=
=>
Eech
2
E
2
0.525
Etapa II
h
1
D
0.294
=
Eech
str2
E
1
0.323
=
=>
Eech
1
E
1
0.64
Eech
str1
E
1
0.39
5070
N
cm
2
=
:=
Concluzie : Sistemul rutier ales indeplineste pe deplin conditiile de trafic.
E
echnec
Eech
str1
Eech
2
E
2
0.44
Etapa II
Eech
str1
E
1
0.47
11280
N
cm
2
=
:=
h
1
D
0.588
=
Eech
str2
E
1
0.33
=
=>
Eech
1
E
1
0.47
Concluzie : Sistemul rutier ales indeplineste pe deplin conditiile de trafic.
E
echnec
Eech
str1
