Stuttgart Main Station (S21)

Architects
Ingenhoven Architects, Düsseldorf/Germany

Planning time
2010 − 2019

Construction time
2011 − 2024

Services by Werner Sobek
Structural engineering of the station
(WP 4 − 6, 7 and 8 according to German HOAI/
Design development through site supervision)
Facade engineering (construction design)

Client
DB Projektbau GmbH, Stuttgart/Germany

Images
Ingenhoven Architects, Düsseldorf/Germany
Werner Sobek, Stuttgart/Germany
HG Esch, Hennef/Germany
Achim Birnbaum, Stuttgart/Germany

The project “Stuttgart 21” includes various building developments in the city of Stuttgart. This includes new construction of an underground train station with 8 tracks as well as a re-furbishment of the subway station “Staatsgalerie”, the partial demolition of the amendments to the old station, new design of plazas and accesses around the station as well as the re-development of the historical Bonatz Building. The new underground station, which is developed in the course of the project “Stuttgart 21”, consists of a hall, approx. 420 m in length and 80 m in width. The roof structure of the hall consists of a shell structure which is supported by chalice-shaped columns made of concrete. These create a horseshoe-shaped support of the flat roof parts. The freeform structural shell columns are opened upwards and are covered by filigree steel-glass structures. A very interesting video about the complex requirements of planning and realization of the shell columns can also be found at the following link: https://www.youtube.com/watch?v=Zp4PJN1KMEI.