Institut für Baustatik und Baudynamik

Prof. Dr.-Ing. habil. Manfred Bischoff

Analysis of segmented shell structuresSushant Goel

• Monolithic glass shell roofs can

be constructed in limited sizes.

• Segmented shells allow

coverage of larger spans.

Structurally speaking, which

segmentation pattern is optimal?

• The glass panes are butt-jointed

using silicone (soft) and epoxy

(hard) adhesives.

• Span: 10 m x 10 m; Height: 2 m

Monolithic glass shells – dome, cylindrical roof (barrel)

and hypar

Glass panes – square, diamond,

hexagon and hexalock

Silicone joints: Meridional bending moment Epoxy joints: Vertical deflection along meridian path

• The monolithic glass dome is in a membrane (momentless) state. Barrel and hypar show significant bending.

• The in-plane forces are unaffected by segmentation and joint stiffness when the optimal pattern is used.

Dome

Epoxy joints: Transverse bending moment Silicone joints: Longitudinal in-plane force

Barrel

Silicone joints: Vertical deflection Silicone joints: In-plane shear force

Hypar