Photo of the Stuttgart21 project's concrete box column. Everyday construction site life.
Photo of the Stuttgart21 project's concrete box column. Everyday construction site life. © Achim Birnbaum

Client:
Ed. Züblin AG

Construction period:
2018-2025

Location:
Am Schlossgarten, formerly ZOB, Stuttgart

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Stuttgart 21 Central Station

The ambitious design by architect Christoph Ingenhoven for Stuttgart 21 main station placed special demands on the type of formwork, which was manufactured by ZÜBLIN Timber.

A total of 28 columns support the roof of the new transit station, creating a monumental structure that clearly characterizes the image of the new station. The construction required formwork parts made of coated LENO® for chalice columns of different shapes, which consisted of up to 58 individual parts and were often used several times. Although the goblets look similar, only very few of them are the same; they vary in shape, inclination and length.

The demands on the special formwork were considerable. On the one hand, the compressive stress was very high, and on the other, the molds were only allowed to deform minimally. At the same time, the concrete heated up to over 75°C during solidification and placed additional stress on the special formwork. In addition, neither visible joints nor pores were to be visible and the surface had to look smooth and snow-white.

German press
Innovation price 2019
Mountain festival: 14 gobletcolumns completed 2021
Last goblet column is stripped 2023

Aerial view of the Stuttgart 21 construction site. © DB Deutsche Bahn
Informative German report on Stuttgart 21
Photo of a screen with the inscription DB Bahnprojekt Stuttgart-Ulm. © DB Deutsche Bahn
Concreting of the first chalice support Stuttgart 21 (German version)

A look at production

Impressions

  • Our services
    • Statics, planning
    • Joinery, coating and delivery of special wooden formwork
  • Products used

    LENO® cross laminated timber

  • Architectural office

    ingenhoven architects, Düsseldorf