Bolted Connection in Glass StructureFull description
phillip glass
Bolted Connection in Glass StructureFull description
Portrait of a Girl in Glass by Tennessee Williams. A short story that was the foundation for Williams's first successful play, The Glass Menagerie.Full description
Full description
ADVANCED DESIGN DESIGN OF GLASS GLASS STRUCTURES Design of glass fin Viorel Ungureanu European Erasmus Mundus Master Course
Sustainable Constructions under Natural Hazards and Catastrophic Events 520121-1-2011-1-CZ-ERA 520121-1-2011-1-CZ-ERA MUNDUS-EMMC
Objectives of the lecture Objectives Short term load action Long term load action Lateral torsional buckling Deformation
•
Design of glass fin
Assess glass fin of the facade – see figure. It is simply supported and suspended from its top support. It is bolted to the inside face of a glass facade and silicone seals provide continuous attachment between the edge of the fin and facade. It is assumed that for short-term gust loads the silicone seals are capable of providing lateral restraint to the edge of fin. It is also assumed that the low modulus of silicone does not permit any T-beam action between the fin and the facade.
L = c 1 6000 mm B = c 2 1500 mm wind load unit weight tension strength of glass float glass (t = 10mm) toughened glass
b
b = 500 mm t = 16 mm w = 1,0 kN/m2 2500 kg/m 3 short-term load 28,0 MPa 59,0 MPa
L
B
long-term load 7,0 MPa 35,0 MPa
2
Short term load action Objectives
1. Moment (design value) – simple check
Short term load action
M Ed
Long term load action Lateral torsional buckling
1 8
F wk L 2
E t 3 61
F 1,5
Deformation
•
Wind load w = 1,0 kN/m2
•
Load width B =
wk w B
c 2 1500
mm
kN m
t
2. Section modulus
W y
1 6
b
t b 2
y
3. Short term load action
M Ed W y
f d
- decision about the type of glass 3
Long term load action Objectives Short term load action Long term load action
4. Axial load in the fin - self weight for
25kN/m3
N Ed F t b L t B L glass fin
Lateral torsional buckling Deformation
=
glass facade
5. Long term load action from self weight
N Ed A fin
f d
- depends on the type of glass
4
Lateral torsional buckling Objectives Short term load action
6. Lateral torsional buckling of the glass fin according to the Australian standard
d 2 La EI z y02 GJ 4 M CR 2 y0 yh 2
Long term load action Lateral torsional buckling Deformation
•
La = length of the beam
•
d = b …. height of the glass fin
•
Iz moment of inertia
I z
1 12
b t 3
1
I t b t 3 3
•
G = 28 700MPa – shear modulus of elasticity
•
J = It …torsional moment of inertia
•
yh = 250mm …. location above the neutral axis of the loading point, positive or negative values for suction and com pression
•
y0 = 250mm …. distance of the restraints from neutral axis 5
