Overseas district, Hamburg

CLIENT

Unibail-Rodamco ÜSQ Development GmbH

LOCATION

Hamburg, Germany

PROJECT DURATION

ongoing since 2016

EXCAVATION PIT DEPTH

Approx. 14 m in the south construction area

BASEMENT FLOORS

SHORING TYPE

diaphragm wall, dissolved bored pile wall

BASE

approx. 60,000 m² (excluding subway)

SOIL EXCAVATION

approx. 580,000 m³

DIAPHRAGM WALL

approx. 25,000 m²

ANCHORS

approx. 850

FOUNDATION PILES

approx. 1,250 partial and full displacement piles
approx. 120 large bored piles

BUOANCY CONTROL

approx. 2,800 GEWI-piles

MISCELLANEOUS

approx. 500 CMC columns

In recent years, Hamburg's largest excavation pit was created in HafenCity. Due to the significant amount of earthwork and specialized civil engineering required, constructing this excavation pit was extremely challenging.

The U4 subway construction crosses the excavation pit, which required sophisticated back anchoring between existing anchors in the adjacent embankment walls, for example. Due to its proximity to the Elbe River, the deep excavation pit requires flood protection.

The ground conditions are among the most difficult in the Hamburg area due to the proximity of groundwater to the surface, soft layers, and numerous obstacles and existing structures.

The Overseas district will feature shops, restaurants, entertainment venues, numerous apartments, hotel rooms, and workplaces.

PARTIAL SERVICES

Excavation pit management
(exploration, planning, and tendering phase)
LP 6+7 for excavation pit and deep foundations
Logistics planning for excavation pit
Excavation pit logistics management
Excavation pit management and deep foundations
Local construction supervision
Project management for civil engineering