Structural Design I - ETH Z engl_1444848320.pdf · Structural design I Structural design II Structural design I+II 1. Introduction 2. Equilibrium and graphic static 3.+4. Cables 5.
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Structural Design I
15.10.2015
2
Course overview
Structural design I Structural design II
Structural design I+II
1. Introduction
2. Equilibrium and graphic static
3.+4. Cables
5. Cable-net and membrane struc-tures
7. Arches
8.+9. Vaults, domes and shells
11. Spatial arch-cable-structures
10. Arch-cable-structures
6. Materials and dimensioning
12. +13. Trusses 15.+16. Beams and frames
17. Spatial beams14. Spatial trusses
19. Columns
18. Bending
3
Cable-net and membrane structures
Static behavior of cable-net and membrane structuresFrei Otto’s physical form-finding experimentsTypes of tensioned roof systemsConstruction detailing Retractable membrane structuresPneumatic membrane structuresMembrane materials
4Static behavior of cable-net and membrane structures
Tensile tree tent
A B
C
B
A
C prestressed state
5Static behavior of cable-net and membrane structures
Q
P >> Q
Q
A
B
C
A
B
C
BA
C prestressed state
6Static behavior of cable-net and membrane structures
A
Q C
Q
A
B
C
C
A
B
C
BA
Q
P > Q
B
prestressed state
7Static behavior of cable-net and membrane structures
B
A
Q
B
A
Q C
Q
Q
A
P = Q
B
C
C
A
B
BA
prestressed state
8Static behavior of cable-net and membrane structures
A
B
A
Q
B
B
B
A
Q
B
A
A
Q C
Q
A
B
C
Q
C
P < Q
prestressed state
9Static behavior of cable-net and membrane structures
D
CB
A
A B
CD
10Static behavior of cable-net and membrane structures
B
P
BA
CD
P
P
P
C
DA
+
11Static behavior of cable-net and membrane structures
m
m
D C
A B
B
A D
C
+
P
P
P P
12Static behavior of cable-net and membrane structures
B C
m n
DA
n
+
m
C
DA
B
m
n
B
A
C
D
P
P P
P
13Static behavior of cable-net and membrane structures
C
DA
B
m n
A D
nm
CB
n
m
C
D
B
A
14Static behavior of cable-net and membrane structures
m
n
A
B
D
C
Q m n
nm
A
BC
D
Q
C
DA
B
P > Q
prestressed state
15Static behavior of cable-net and membrane structures
m
n
A
B
Q
m
m n
nm
Q
A
B
A
BC
D
Q
C
DA
B
P = Q
prestressed state
16Static behavior of cable-net and membrane structures
B
A D
C
Q
D
CB
A
B
A
Q
A
B
Q
m n
nm
m
m
Q
B
A
n
m
P < Q
prestressed state
17Static behavior of cable-net and membrane structures
B
CB
A D
A
D
C
E
D
E
FA
BC
m
m
nm
B
A
D
C
m
n n1
2n
F
n1-2
18Static behavior of cable-net and membrane structures
mm 1-3 n
n
11
mm
n2
nn2
n
3n3
4n
n 1-4
19Static behavior of cable-net and membrane structures
P
P
P
B
m
n
A
BA
D C
C
Dn
mA
PPPP
P P PP
PP P P P P P
P
PPPP
PPPP
PPPP
PPPP
B
D
C
P
20Static behavior of cable-net and membrane structures
mm nn
21Static behavior of cable-net and membrane structures
Q
m m
QQ
Q
nn
22Static behavior of cable-net and membrane structures
mn
Q
Q
Q
m nQ
23Static behavior of cable-net and membrane structures
24Static behavior of cable-net and membrane structures
Anatole Kopp, R. Sager: Stade de Saint-Ouen, Nanterre, 1971
25Static behavior of cable-net and membrane structures
Anatole Kopp, R. Sager: Stade de Saint-Ouen, Nanterre, 1971
26Static behavior of cable-net and membrane structures
Anatole Kopp, R. Sager: Stade de Saint-Ouen, Nanterre, 1971
27Static behavior of cable-net and membrane structures
Anatole Kopp, R. Sager: Stade de Saint-Ouen, Nanterre, 1971
l
b
P = p b
P
.
1P
.
2
3
P = p l
1
m
P3
4
4P
.
.
3 PP
P = p l2
2
n
P 4P
P = p b
1
p
p
p
p
28Static behavior of cable-net and membrane structures
29Static behavior of cable-net and membrane structures
B
B
A
D
C AE
D
C
F
30Static behavior of cable-net and membrane structures
C
E F
D
BA
P
P P
A
n
m
P
mn
+D
C
E
FB
31Static behavior of cable-net and membrane structures
D
E
D
E
BF
CA mn
C
A
BF
32Static behavior of cable-net and membrane structures
B
D
A
C
F
C
n
F
m
B
A
C
C
D
BF
E
AE
D
BF
D
EA
E
33Static behavior of cable-net and membrane structures
34Static behavior of cable-net and membrane structures
35Static behavior of cable-net and membrane structures
36Static behavior of cable-net and membrane structures
37Static behavior of cable-net and membrane structures
38
Cable-net and membrane structures
Static behavior of cable-net and membrane structuresFrei Otto’s physical form-finding experimentsTypes of tensioned roof systemsConstruction detailing Retractable membrane structuresPneumatic membrane structuresMembrane materials
39Frei Otto’s physical form-finding experiments
Frei Otto, Pritzker Prize Winner 2015
40Frei Otto’s physical form-finding experiments
41Frei Otto’s physical form-finding experiments
42Frei Otto’s physical form-finding experiments
Frei Otto: Study „Membraneforms“, Germany, 1986
43Frei Otto’s physical form-finding experiments
Frei Otto: Study „Membraneforms“, Germany, 1986
44Frei Otto’s physical form-finding experiments
45Frei Otto’s physical form-finding experiments
46Frei Otto’s physical form-finding experiments
Frei Otto: Soap film machine
47Frei Otto’s physical form-finding experiments
Frei Otto: Model, soap film
48Frei Otto’s physical form-finding experiments
Frei Otto: Humped tent, Aberdeen and Hyde Park, 1975
49
Cable-net and membrane structures
Static behavior of cable-net and membrane structuresFrei Otto’s physical form-finding experimentsTypes of tensioned roof systemsConstruction detailing Retractable membrane structuresPneumatic membrane structuresMembrane materials