Rijkszee- en Marinehaven Den Helder
ADS removed a concrete plug down to 3 metres below the waterline from a damaged steel tubular pile in the harbour of Den Helder — using a specially developed support structure for maximum safety and precision.
Duration
Two days
Segment
Removing a concrete plug below the waterline
For our client Ballast Nedam Marine & Civiel B.V., ADS was tasked with solving a complex challenge in the harbour of Den Helder. Due to collision damage, an existing steel tubular pile needed to be opened up to allow for further construction. A concrete plug of approximately 1.5 metres had to be removed from inside the pile, at a depth of approximately 3 metres below the waterline.
Custom solution delivered in two days
ADS developed a bespoke support structure for this project, which was attached to a construction crane. By mounting high-pressure water nozzles onto this structure, we were able to remove the concrete plug with precision and safety, even underwater. The entire project was successfully completed within two days.
Custom support structure for underwater hydrodemolition
No problem for ADS! Hydrodemolition below the waterline requires a tailored approach. For this project, we designed a special support structure attached to a construction crane to hold the high-pressure water nozzles in place. This ensured both safety and precision, allowing the concrete plug to be removed successfully without damaging the steel tubular pile.
Max van 't Geloof
Project Lead
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