BUILDING A NEW CONTAINER BERTH CT IV IN BREMERHAFEN

‘Hansenstad’ Bremerhafen is extending its existing container berth by approximately 870 metres. The essential part of this new berth is a combination wall consisting of double Hoesch PSp sections that are driven in at their target depth at a 2.31 metre centreto-centre distance, as well as Hoesch Pzi 675-12 intermediate slabs to fill the spaces between the PSp sections.

The subgrade consists of alluvial deposit, which is replaced by sand before the PSp sections are installed. Under the deposit we find crude sand, flint chips, shingles and rock. Below this, there are more layers of sand and layers consisting of cohesive soil. The basis for this project was the intensive collaboration
between Liebherr and Dieseko. We installed this heavy combination wall departing from our own jack-up platform. For the installation of the PSp sections, we use a Liebherr LR 1280 with an LRH 600 type suspension king post, fitted with a Dieseko hydraulic vibro type PVE 110M. This PVE 110M is driven by a PVE 1000 generator with a capacity of 784 kW. This equipment vibrates the PSp sections to a depth of 35 metres. To increase the bearing capacity, the final 5 metres are rammed in.

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