Page 356 - MORPHOLOGIE DES STRUCTURES

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356 LES PORTIQUES

20 L = H = H =10 20 L =10; H = H = 5
W h1 h2 h3 W h1 h2 h3

18 18

16 16

W W+ 1 H W+ 3 H W W+ 1 H W+ 3 H
2k L 2k L
2k L 2k L

14 14

12 12

k =1 k =1
10
2
10 2
4
4 10 8 6
108 6

8∞ 8 ∞
7.5 7.5

k =1 Z =0.75 Z =0.75
2
64 k =1 Z =0.375
86 62 Z =0.25
10
∞ 108 6 4

∞

4 4 ∞ 10 8 6 4 2
3.75 3.75
∞ 10 8 6 4 2 k =1 k =1
Z =0.375

2.5 Z =0.25 2.5
2 2

L L

0 H0 H

0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10

Figure 2.7.3. Figure 2.7.4.

12 L = H = H =10 12 L =10; H = H = 5
h1 h2 h3 h1 h2 h3
Ω1σ Ω1σ

p1L p1L

10 10

k =1 8
2
84 Z =0.75 ∞ 6 81402
108 6 k =1
∞ Z =0.75

6 6

k =1 Z =0.375 4 k =1 Z =0.375
2 Z =0.25 2 Z =0.25
4 86 4
10 86 4
∞ 10

k =1 ∞
10 8 6 4 2
k =1
∞ 864 2
2 2 ∞ 10

L L
H H
0 0
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10

Figure 2.7.5. Figure 2.7.6.