For the new construction of the Sony-Center at Potsdamer Platz, the soil of the 27.000 m2 ground area was explored by means of numerous exploration wells and exploratory work. For the construction of the excavation both a considerable excavation of the soil as well as a significant subsidence of groundwater were necessary (up to 13 m below groundwater level). The excavation pit was constructed as a trough construction pit with reinforced concrete slotted walls (sheet pile walls of up to three anchor layers set in the slot) and soft-gel sole. The foundation of the skyscraper finally took place as a combined pile-slab construction.
Ort
Berlin
Auftraggeber
BE-ST Bellevuestrasse Development GmbH & Co. KG First Real Estate KG , represented by Tishman Speyer Properties
Zeitraum
1992-1999
Leistungen
- tendering and supervision of geotechnical field investigations
- geotechnical laboratory investigations
- soil survey and foundation consultation
- contamination survey of soil and groundwater
- disposal concept (i.a. for tar oil damage)
- water advisory opinion
- hydrogeological expert report
- object planning of the excavation with creation of a functional tender
- geotechnical consulting and construction management on behalf of the client
- monitoring of decontamination work during excavation pit production
- investigation of vibrations from railway and road traffic
- Überwachung der Dekontaminationsarbeiten während der Baugrubenherstellung
- Untersuchung von Erschütterungen aus Bahn- und Straßenverkehr
