Chadstone Gridshell Roof
An extension of Chadstone Shopping Centre gave Atelier One the opportunity to create a new design method for Gridshell Roofs. The 7080 m2 undulating form spans over 30m with a structural depth of only 220mm, and quadrilateral glass panels that conform to strict planarity limits.
Dynamic relaxation algorithm - Panel layout optimisation.
A free flowing curve in 3D space served as the roof boundary for the shopping centre extension below. To reduce the weight of the supporting structure and improve efficiency of glass panel cutting, a quadrilateral grid was chosen, with triangular panels only needed at the boundary. The architectural brief from CallisonRTKL specified high points within the roof, requiring a large degree of double curvature. Quadrilateral glass panels could only be cold bent to a certain extent (1% of the shortest diagonal) whilst remaining within warranty. All of these challenges gave Atelier One the impetus to develop a dynamic new bespoke software for generating a planar quadrilateral structural-grid to fit a non-regular double curved surface.
Built by Seele in October 2016, the fundamentals of the methods implemented in the final geometry of this gridshell roof are described in the 2017 paper Chadstone Gridshell Roof – IABSE Bath 2017.
Chadstone Gridshell Roof. Photograph © Carlos Alba - CRTKL
Chadstone Gridshell Roof. Photograph © Seele
Chadstone Gridshell Roof. Photographs © Carlos Alba - CRTKL
Further information on Chadstone gridshell roof :
The Institution of Structural Engineers - Structural Awards 2017
BuchanNews - ICSC Asia Pacific Shopping Centre Awards 2018
ArchDaily
Arch2o.com - Article with nice images and technical documentation
More works on architectural geometry (dedicated section coming soon)
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