Stuttgart-Gaisburg

Combined heat and power plant

Frankipile NG® and Tubular steel piles for the foundations of new power stations

Foundation works for the modernisation of the power plant

For several decades, the Stuttgart-Gaisburg combined heat and power plant has been an integral part of the region’s energy supply. As part of the modernisation programme, existing plant components were either supplemented or replaced with new structures. Deep foundation works were required for the new plant components, and these were tailored to the site’s geological conditions.

Frankipiles NG® for load transfer

The main focus of the foundation works was the installation of 527 Frankipiles NG® with a diameter of 61 cm, design loads of up to 2,150 kN and lengths of up to 8 m. In addition, 32 Frankipiles NG® with a diameter of 42 cm, design loads of up to 550 kN and lengths of up to 8 m were installed. The piles transfer the load from the new power station structures into the load-bearing soil layers.

Tubular steel piles for supplementary foundation work

In addition, 10 tubular steel piles with a diameter of 41 cm, design loads of up to 300 kN and lengths of up to 8 m were used. The different pile systems were deployed according to the respective load requirements and structural areas.

Taking geological conditions into account

One project-specific requirement was to construct the foundations above the existing Gypsum Keuper. The production of the piles was accordingly adapted to the geological conditions at the site. The foundation elements were dimensioned and arranged in such a way that the loads from the new plant are transferred into the designated ground strata.

Foundations for the new power station infrastructure

The combination of Frankipiles NG® and Tubular steel piles formed the basis for the construction of the new power station facilities at the Stuttgart-Gaisburg site. The foundations transfer the loads from the structures and technical installations and create the conditions for further building construction and plant engineering work.

Foundation for the modernisation of the site

The installation of a total of 559 Frankipiles NG® as well as 10 Tubular steel piles laid the groundwork for the implementation of the modernisation measures at the Stuttgart-Gaisburg combined heat and power plant. The specialist civil engineering works form an integral part of the structural renewal of the power station site.