دراسة الغطاء المعدني1

1- :

1-1- :

...... . .

- () :

-

-

-

-

- ( - .. )

2- :

( q ) ( v) :

V:

P: (Kg/m3 ) P: 1.225 (Kg/m3 ) () 15 ( 76 0 9.80665 /2 )

q :

3- :

10 :

87.50 daN/m50 daN/m 1

122.50 daN/m70 daN/m 2

157.50 daN/m90 daN/m 3

4- :

:

q nc : ec q:

5- :

- :

(qH) H daN/m2 . (10 q) ( 10 ) H 0 500 10 q , qH :

:

: H

: 10

- ( Ks) :

. . .

Ks : III II I

0.80

1.00

1.250.80

1.00

1.300.80

1.00

1.35 -

-

-

II : Ks=1.30 RNV 65 - ( Km) :

.

Km=1 RNV 65 - ( ) :

. ( )

H = m 10.40

RNV 65 ( 63 R III 2) L = m 43.30

- :

-

-

6- : ( (+) . - Ce :

:

: Ce=0.8

: -0.8) (1.3- Ce= : b = 35.30m

a = 43.30m h = 10.40m :

2- :- () : ( Ce = fet (( et (0 ) ( (0 = 0.85

( Ce =fet (()

:

:

: - :

=

:

: - Ci :

C :

.

. . .1- :

:

RNV 65 .

% ................... .

% ................... .

% ................... .

A :

: 507 2

: 39.43582 2

B:

: 507 2

: 102.9772

D C:

: 257.14482

: 17.0802

-

5% RNV 65) 105)

: (suppression) : (depression)

: (suppression)

: ((depression

0102

Ce-0,320-0,240

Ci0,4140,414

C-0,734-0,654

Ce-0,320-0,240

Ci-0,198-0,1987

C-0,121-0,0413

0102

Ce-0,280-0,280

Ci0,4170,417

C-0,697-0,697

Ce-0,280-0,280

Ci-0,183-0,183

C-0,463-0,463

SA SB2- 2 -1- les pannes :

:

chantignolle ,

:

1 ....................................................6

2- .........................................................6.08 3- ..............................................2.5

4- ......................................................6 :

-

IPE 180..... daN/m2 18.8 TL75G ..... daN/m2 17.90

- :

: 1/3 2/3 1 20 daN/m2

:()

EMBED Equation.3 (x-x) (y-y) Vnx = -113.70 daN / m.l

Vex = -198.98 dan / m.l

Vny = 0

Vey = 0

: : CM66 Py ( y-y)Px ( x-x)

4/3 G + 3/2 Q221.3623.50

G + 3/2 Vn-111.046.3

G + Ve-139.526.3

G + Q153.5416.3

: : IPE 180 1* :

2* :

fx fy fx ad

fy adm

Diversement *1 :

, , . .

1- : : D

: J

: C : B : 1 .

EMBED Equation.3 2 :

(CM66 page 211) 13.411 k0 :kd 2

IPE180

1* :

(x-x)

(y-y)

: S

EMBED Equation.3

: la panne de Rive

.

) x , x (

: ) y-y (

) : (

,

:

: . :

N [m] [ daN ] [ daN ]

16.65587.59335.69

218.791660.28948.51

325.412245.221282.69

425.782277.921301.37

Total 76.636771.013868.26

:(Nd)

: lancement

L 60 x 60 x 10 : : liernes

L1

L2 -

L3 -

L4 -

L5 -

L6 - : 396.55 :

10

: lchantignolle . .

:

: 10

: boulon dassemblage . (e= 24 daN/mm2 4.6 : *

- 1n=2 - 2

Ar > 21.26mm2 : 2 ( 12 : *

A r > 17.29mm2 2 12 :Fermes 3- : * . : .Une membrure suprieure (arbaltrier) .- .Une membrure infrieure (entrait) .- montants- L diagonales . double cornires . : * 18.80 x 5 = 94daN - .................................25x5x2.25 = 281.25daN - .....................................17.90 x 5 x 2.25 = 201.375daN - ..........................3 x 5 x 2.25 = 33.75daN - .................................. : * qn = 68.85 daN/m2- .....................................................

qe = 120.5 daN/m2 - .......................................... : Ce / :

: /

Ci / :

: /

*

:

:

xx yy *

:

:

xx yy : * 44.44 x 5 = 222.2daN .................................................. 20 x 2.25x 5 = 225daN ................................................. P (daN)

4/3 G + 3/2 Q1484.63

G + Ve dp.445

G + 3/2 Vn dp.468.63

G + Ve surp.-583.655

G + 3/2 Vn surp.-242.41

G+Q1572.18

: la mthode des isolations des nuds

:

:

No de barreElmentEffort (daN)Sollicitation

1N1-2-N22-21-8907.78Compression

2N1-3-N21-19--

3N2-3-N22-19-12030.75traction

4N2-4-N22-2013815.81Compression

5N3-4-N20-19Compression

6N3-5-N19-17traction















21N11-12Compression

d

a

b

-0.280

-0.280

-0.320

V (

V (

a

b

B

D

c

C

V (

A

b

c

d

a

B

D

C

A

c

d

B

D

C

A

a

b

b

c

B

C

A

d

a

D

(

pc

pp

P

=

e

x

x

y

y

(

Gy

Gx

G

q

EMBED Equation.3

EMBED Equation.3

1kN

1kN

EMBED Equation.3

- 0.734

- 0.654

- 0.121

- 0.041

EMBED Equation.3

x

x

y

y

3m

Px

3m

x

y

y

x

Py

6m

EMBED Equation.3

x-x

x

y

y

x

Py

6m

y-y

x

x

y

y

3m

Px

3m

lierne

L6

L5

L4

L3

L2

L1

L2

L3

L4

L5

L1

T6

T6

T2

T3

T4

T5

T1

Py

Panne de rive

F

x

y

y

6m

F

RA

F

F

F

F

0.375 Px (l/2)

0.375 Px (l/2)

1.25 Px (l/2)

l/2

Px=23.55 daN / m.l

l/2

x

x

y

y

Lchantignoll e

3m

3m

R2

R2

y

Lchantignolle

Px =23.50 daN/m.l

6m

Py =221.36daN/m.l

R1

R1

x

x

EMBED Equation.3

EMBED Equation.3

EMBED Equation.3

22.5m

V2/2

V2

V2

V2

V2

V2/2

V1/2

B

V1

V1

V1

V1

V1/2

A

2.20 m

1.00 m

(surpression)

(surpression)

2.20 m

1.00 m

22.5m

B

A

V4

V3

V3/2

V3

V3

V3

V3/2

V4

V4/2

V4

V4

V4/2

Q = 447.2daN

G = 610.375 daN

20

P/2

P

P

P

P

P

P

P

P

P

P

P

P/2

P/2

18

16

4

6

8

10

12

14

5

7

21

19

17

15

13

11

9

3

2

RA

RB

1

20

22

RA

N1.3

N1.2

Y

X

N2.4

(

(

N1.2

N2.3

P/2

PAGE 29

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دراسة الغطاء المعدني1