Quay wall renovation Neumühlen Westkai Hamburg

Quay wall renovation is a specialty of DEPENBROCK hydraulic engineering. For each project, the in-house technical office develops a concept that is optimally tailored to the respective requirements in technical, economic and ecological terms. A current example is the refurbishment of the Neumühlen quay wall in the port of Hamburg.

The old quay wall – built in 1955 and 1983 – is being renovated over a length of 242.50 meters.

DEPENBROCK Ingenieurwasserbau is carrying out the refurbishment by building a new combined sheet pile wall, anchoring it back with micropiles and a new reinforced concrete beam. In addition, cavities caused by subsidence behind the old, dilapidated quay wall are being filled, existing pipes adapted and the original promenade area restored.

The specialists also contributed with a concept for the optimized use of equipment for the construction of the sheet pile wall within the specified time frame. The logistics for drilling material and sand were carried out by water to avoid road transportation.

Drilling holes with diameters of 1,500 and 2,000 mm through the existing scour protection made of armourstones and the installation of the sheet pile wall in front of an old structure that had become obsolete posed particular challenges. The construction site is located in the flood zone during storm surges, so special safety measures were required.

Special features

• approx. 2,200 tons of steel for the combined sheet pile wall
• 221 Micropiles
• approx. 1,200^m3 reinforced concrete
• 15,000^m3 of sand for soil replacement and cavity filling
• Use of the Simone jack-up platform