Sculpture "Virtual Tectonics" for BAT Architects in Hamburg

Before the construction of the Hamburg Ministry of Urban Development and Environment, and thus in close proximity to the site of the International Garden Show 2013, the sculpture "Virtual Tectonics", designed by the Hamburg architects BAT, is there since August 14. Hahlbrock has realized this spatial sculpture, a self-contained band of variable width and curvature, according to a model of the architects Julia Hoins and Arndt Benedikt Willert-Klasing in a short time. Support came here by partners from the network of the CFK-Valley Stade and by the engineering office Dr. Binnewies in Hamburg.

The three identical wings of the spatial sculpture seem to penetrate to the observer and had to be carried out as a multi-angled multi-piece band. Due to the unique character and the very complex shape to Hahlbrock decided to run in GRP sandwich construction. Here, about 100 mm thick rigid foam cores were covered all over with fiberglass after the integration of locks and power transmission elements made of CFRP.

Especially at the joints of the blades a high degree of surface continuity and accuracy was required in order to can combine the three elements into an endless loop. Also, the claim of the architects to a largely invisible, yet highly resistant and reversible locking of the blades could be settled. This was possible only through the consistent use of a digitally based production chain, starting with the differentiated CAD model of GRP sandwich elements through which derived from milling, laminating and mounting devices to CNC based milling of multi-curved sandwich cores from different foams. Hahlbrock was able to know from
experience of manufacturing similar composite sandwich moldings, although these were not as geometrically complex.

The spatial sculpture "Virtual Tectonics" can still be seen until the end of IGS2013 in October in Hamburg. Then the transport to Stade and reassembly is done on the grounds of CFK Nord, the Research Center for Composite Technology in the CFK-Valley Stade.

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