S21 – Access Walkways

A number of architectural alterations are being made to the state capital of Stuttgart as part of the Stuttgart 21 railway project. These changes include the construction of a new, underground, eight-track through station with a train shed that measures approximately 447 metres long and 80 metres wide.

Bridging Distances – Access to the New Stuttgart Underground Station

Three walkways allow passengers to access the new train shed from Stuttgart’s historic Bonatz building. These walkways consist of bridge-like reinforced concrete composite constructions with stairs leading down to the platforms. The supporting structure consists of steel girder grids and reinforced concrete slabs, which are used independently and in combination with each other according to the material properties and architectural requirements.

A special feature is that the webs are partly supported on the trough structure and partly suspended from the shell roof. Due to deformations of the shell roof resulting from the construction process, the position of the walkways must be readjusted. Part of the planning was to take the appropriate precautions for this.

Article in the journal ‘Stahlbau’ on the planning and construction of the access walkways

Special edition on the access walkways