KÖ-BOGEN II DÜSSELDORF

Planning and management services for a major inner-city project
In a central location in the state capital Düsseldorf, between the Dreischeibenhaus, the Schauspielhaus theatre with Gustaf-Gründgens-Platz, Schadowstrasse and the Liebeskind buildings, one of the most innovative buildings in Düsseldorf is being built. The triangular, six-storey office building with a stepped facade covered in green is bringing nature back into the inner city. Almost eight kilometres of hornbeam hedges act as a natural cold storage system, give off clean and moist air and in doing so reduce the inner-city warming effect. The commercial and services centre with a gross floor area of approx. 66.000 m² has been designed by the ingenhoven architects firm of Düsseldorf. Schüßler-Plan is providing both planning and management services for this complex construction project that is the focus of public attention.

Geotechnical engineering at its best
The constraints for the design and implementation planning of the up to 17 m deep diaphragm wall foundation pit are particularly complex: Surrounded by the Dreischeibenhaus with connected underground car park, the Düsseldorf Schauspielhaus theatre, the Wehrhahn underground line, the Kö-Bogen-Tunnel and the spindle structure of the state capital Düsseldorf with connections to Kö-Bogen II and the underground car park of the Dreischeibenhaus, the construction site is located amid existing buildings and intensive neighbouring construction projects. Before construction work on the foundation pit started, extensive ground investigations were conducted and calculations of the groundwater conditions were made taking in particular the planned groundwater flood barrier into account. Technical support has been and is being provided for the foundation pit planning and the planning of the specific foundation of the building complex on primary columns in diaphragm wall barrettes and the construction phase itself. Schüßler-Plan is working here with its subsidiary ICG Düsseldorf: As a competence centre for geotechnical engineering, the two companies ensure a seamless transition between the subsoil and support structure.

Construction of the diaphragm wall foundation pit
The new underground car park designed with five underground floors will cover an area of approx. 84 m x 54 m and replace the existing 3-storey underground car park. The underground car park will be connected to the Kö-Bogen-Tunnel and the underground car park of the neighbouring Dreischeibenhaus by a spindle structure. The underground car park and the basement enlargement for the high-rises will be built in a diaphragm wall foundation pit, which will include the existing underground garage and be extended to the south. Specialist excavation equipment will be used here. In some areas the diaphragm wall will be guided by the existing structure. The demolition of the existing underground car park is to be coordinated with the reinforcement of the diaphragm wall foundation pit. An additional efficiency factor: The cut-and-cover construction method chosen for the foundation pit will take place on the upper and lower levels at the same time.

Challenging construction logistics in inner-city locations
In addition to the structural planning, Schüßler-Plan provides in the implementation of construction measures the full range of property supervision services according to HOAI, including special project-specific services. These include among other things activities such as the supervision of all contractors employed, the site, change and risk management and the coordination of the parties involved. Schüßler-Plan is also tasked with the construction and logistics management. In particular the inner-city and underground logistics is key. The construction progress will be reviewed and optimised each working day.

Client
Düsseldorf Schadowstraße 50/52 GmbH & Co. KG
represented by CENTRUM, B&L Group

Location
Düsseldorf

Architecture
ingenhoven architects

Technical details
66,000 m² GFA
6-storey main building with facade covered in green
5-storey underground car park

Services
Structural planning according to HOAI performance phases 1-6, 8
Construction management
Special services: Pit lining, demolition planning, foundation pit, 3D modelling based on BIM

PDF version

Construction of the foundation

Kö-Bogen II Düsseldorf

Visualisation of the finished building

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