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Container Terminal Gdansk Client: Project company DCT Gdansk S.A. General Contractor: HOCHTIEF Construction AG Execution planning: Engineering office Projmors, Gdansk Dates work carried out: 2005 - 2007 The outstanding feature of Poland‘s biggest deep-sea harbour is the pier. It consists of two berths and RoRo equipment for handling containers. From the coastline the pier projects some 800 metres into the Baltic Sea. The newly created land measures some 44 hectares. Seven million cubic meters of sea bed had to be moved for this purpose. We drove sheet-pile walls into the ground to construct the outlines of the new container terminal in the Baltic Sea off the coast before Gdansk, but first the ground had to be subjected to exhaustive tests. Around the axis o the quay wall the soil stratums were not able to support the load. Consequently, we excavated the earth up to a depth of 15 metres with bucket-ladder dredgers and used suction hopper dredgers to replace it with sand to provide a better load bearing capacity. This procedure was chosen as the best solution following a number of investigations on the optimisation of materials to be used for constructing the quay wall. We subsequently began construction work on the combination sheet pile wall, using HOCHTIEF‘s own jack-up platform 'Odin' to carry out the driving work. This also served as a safe and secure working platform for fitting the flap anchors in the stormy Baltic Sea. Using a tried-and-tested method, we first of all lowered the anchor block onto the sound foundation material and then precisely settled it into place with vibrations. We carried out the important driving work for the load bearing piles with an IHC S15 pile driver using the pile driving lead of the Odin. Through using our own technical equipment HOCHTIEF Construction was able to ensure the highest quality of driving operations for the load bearing and intermediate piles. |
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