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366 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+1H W+1H W W +1H W+1H
kL kL kL kL
14 14
12 12
k =1 k =1
10 2 10 2
4
8 4
10 8 6 7.5 10 8 6
8∞ 6 ∞
7.5
Z =0.75 4 k =1 Z =0.75
k =1 3.75 2
Z =0.375 Z =0.375
2 Z =0.25 2.5 10 86 4 Z =0.25
6 64 2 ∞
10 8
∞
4
3.75
∞ 10 8 6 4 2 k =1 ∞ 10 8 6 4 2 k =1
2.5
2
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 2.9.3. Figure 2.9.4.
20 Z = 0.75 ; L = H = H =10 20 Z = 0.75 ; L =10 ; H = H = 5
h1 h2 h3 h1 h2 h3
Ω1σ Ω1σ
p1L p1L
18 18
16 16
14 14
12 12
10 10
1064 2 k = 1
8 8 k =1
84 2
8
∞ 10 6
6∞
6
4
4
2 2
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 2.9.5. Figure 2.9.6.
