The Interchange Pavilion, located in South Eveleigh, Sydney, combines 15 tonnes of robotically moulded glass-reinforced concrete panels, 1400 pieces of router cut hardwood, and 250 meters of stainless-steel ground rails. Studio Chris Fox designed, modelled and managed each component of the project with a computational workflow.
The unique material palette is supported by a 14-tonne structure made up of 1650 pieces of digitally fabricated aluminium to create a 350 m² public art installation. The artist Chris Fox draws inspiration from the precinct’s rail history, he worked with the salient geometries of the railroad switch. That is the point at which a train can change its course, moving from one trajectory to another. His work is a tribute to the diverse stories and journeys of people connected with the Eveleigh Rail Yards.
The structural system is conceived as a lattice frame. Each element is rigidly connected due to high precision welding. The three individual shells meet at the apex on a surface area of 170mm x 350mm. The top connection is a bespoke geometry entirely welded with 20mm thick aluminium plates to be able to act as a keystone and create an equilibrium of the forces.
With the introduction of aluminium as the predominant structural material, the self-weight of the load bearing structure was reduced which resulted in an optimised solution for the foundation. The engineered aluminium structure is able to carry two and a half times its own self-weight.
Bollinger+Grohmann was responsible for the design and detailing of the aluminium structure, the piled foundation, the temporary support structure and assisted the lifting and transport studies for the builder.