Four inner courtyards linked via corridors form the central element of the new shopping center "Höfe am Brühl". Two inner courtyards, along with their corridors, are fully covered by a continuous gridshell roof. The unit consisting of courtyard and corridor measures approximately 85 m in length (west), respectively 73 m (east). The structural principle of the roofs is a double curved gridshell made out of triangular elements with minimized member sizes. The height of the curves was derived using a form finding process. The roofs are supported linearly by 6 m high and 40 cm thick, rigidly connected concrete walls at a constant height. Horizontal forces are also transferred to lower slabs by these walls. To reduce constraining forces due to temperature elongation, the shells are supported by pin bearings and movable bearings along its longitudinal edge on the concrete wall.
Location
Leipzig, Germany
Architect
Grüntuch Ernst Architekten, Berlin; Heine, Hamburg
Client
mfi management für immobilien AG
Contractor
Roschmann GmbH, Gersthofen
Our Scope of Work
conceptual design, construction design
Roof area1,220 m² (west courts), 930 m² (east)
Steel tonnage78 t (west), 58 t (east)
Triangle glass panesmax. side length 2.5 m
Node connectionspartly System Lite-Shell, partly welded nodes (at reinforced areas)
Maximum span20 m (west courtyard 1), 16 m (east courtyard 4)
Grid memberssolid bars 50/80 mm, 50/100 mm
AwardsICSC European Shopping Centre Awards 2014, category New Developments, 2nd place