Page 421 - MORPHOLOGIE DES STRUCTURES

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LES PORTIQUES 421

50 L = H = 10 b 50 L =10 ; H = 5 b
h1 h2 H 1.10 h1 h2 H 1.10
α α
Hα α 1 Hα α 1
Z =0.25 Z =0.25
40 Z =0.375 bL b 0.90 Z =0.375 b Lb 0.90
0.83 Hα L 0.83
Z =0.75 L 40
30 0.80 Z =0.75 α 0.80

Hα α 0.70 0.70

bb 0.60 30 bb 0.60
0.57 0.57

0.50 0.50

0.40 0.40
20 0.36 20 0.36

0.30 0.30

k=1 k=1

2 0.20 2 0.20

10 10

4 4

6 6

8 0.10 8 0.10

10 10

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

Figure 2.21.5. Figure 2.21.6.

20 L = H =10 20 L =10; H = 5
W h1 h 2 W h1 h2

18 18

Hα α Hα α

16 16

bLb bL b

H H
14 α α 14 α α

12 b Lb 12 bLb

10 k=1 2 k=1

8 k=1
7.5
6 2 2

4 86 4 10 8 64
3.75 10 10

2.5 ∞ 8 ∞
2 7.5
Z =0.75 Z =0.75
0 6
0 k=1 k=1 Z =0.375
2 Z =0.25
2
L
8 4 8 4 H
6 6 9 10

10 10

∞ ∞
∞
10 8 6 4 Z =0.375 4 ∞ 10 8 6 4 2 k=1
Z =0.25 3.75

2.5
2

12345678 L 0 12345678
H 0
Figure 2.21.7. Figure 2.21.8.
9 10