Free hanging monopile installation test
FREE HANGING MONOPILE INSTALLATION TEST IN THE NETHERLANDS
In 2018, the CAPE VLT-320 Tandem was used to upend and install a 6.5 meter diameter monopile with a length of 30.4 meter at the Maasvlakte 2 in Rotterdam, the Netherlands.
The pile was successfully upended and driven to final penetration. The pile needed to be stable for a test of a new type of impact hammer which would have needed a special installation frame otherwise.
Free hanging from the Matador 3 from Bonn & Mees the CAPE VLT only needed a net driving time of 15 mins to get the 330 tonnes weighing monopile to a penetration depth of 24 meter.
Without any other tool, gripper or installation frame the pile ended up at 0.05° verticality which was well within the set tolerance. This project showed how the verticality could still be corrected even at final penetration.