Construction of a High-Rise Building near Sensitive Infrastructures and the Resulting Soil-Structure Interaction

Between two banks of the River Main in Frankfurt, Germany, a new high-rise building is planned with a challenging structural concept. The geotechnical boundary conditions, such as the location of the building, nearby sensitive traffic and infrastructures and quay walls defines the complexity of the nature of the project. The quay walls are more than 100 years and should be kept unaffected during and after the construction phases. The high-rise building will have a height of about 75 m and will be founded on a Combined Pile-Raft Foundation (CPRF) in the tertiary, soft marl. For analysis of the stability and the serviceability of the heavily eccentric loaded foundation of the new high-rise building and the existing structures and for the investigation of the soil-structure interaction complex three-dimensional, non-linear numerical simulations have been carried out. The paper introduces into a very complex construction project in which the realistic consideration of the soil-structure interaction is very important for the serviceability of the foundation of the planned high-rise building as well as for the surrounding infrastructure.