Wendlingen junction

Stuttgart 21

Special civil engineering works for bridge structures and subsoil improvement on the A8 motorway

Prior to the redevelopment of the junction, a railway viaduct and a road viaduct were constructed across the B313. These structures required extensive foundations, construction pits and subsoil improvement measures. The scope of works included excavation shoring, pile foundations, shaft structures as well as subsoil improvement measures along the future route.

Construction pits with overlapping pile walls

The construction pits were constructed using overlapping pile walls with a diameter of 880 mm. Back-anchoring was carried out using dead-man systems. The shoring structures created the conditions necessary for the construction of the bridge abutments and other civil engineering structures in the area of the junction.

Around 4,000 m of bored piles for the bridge structures

A total of around 4,000 m of bored piles were installed for the foundations of the railway and road overpasses. The piles were constructed with diameters of 880 mm and 1,180 mm and reached depths of up to 24 m. The pile foundations transfer the load from the bridge structures into the load-bearing soil layers.

Shaft structures and subsoil improvement

In addition, seven shaft structures were constructed. These were constructed as well as using shotcrete and overlapping sheet pile wall structures. Furthermore, around 16,000 m of vibro-compacted columns were constructed along the track alignment. These measures served to improve the ground conditions in the relevant sections of the route.

Shoring and earthworks for the transport infrastructure

As part of the project, around 15,000 m³ of excavated earth was moved. In addition, structures and temporary works were created for the future traffic routing as well as the construction of the bridge structures. The combination of pile foundations, excavation shoring, shotcrete construction as well as subsoil improvement formed the basis for the subsequent civil engineering and transport construction works.

Foundation for the connection to the new Stuttgart–Ulm line

The specialist civil engineering works at the Wendlingen junction laid the groundwork for the construction of the transport structures as part of the Stuttgart 21 project. The foundations, shoring and subsoil improvement measures carried out form an integral part of the infrastructure development in the area of the A8 motorway and the new Stuttgart–Ulm line.