Free hanging monopile installation demonstration

FREE HANGING MONOPILE INSTALLATION DEMONSTRATION IN THE NETHERLANDS

In 2016, the CAPE VLT-320 was used to upend and install a monopile with a slip joint connection with a length of 27 meter, weighting 127 tonnes and a bottom diameter of 4 meter at the Maasvlakte 2 in the Netherlands. The pile served as a foundation for a demonstration turbine.

As part of the DOT demonstration project, the CAPE VLT was used to demonstrate its capabilities to upend and drive the pile to final penetration without the need for any other handling tools or support/guiding frame.

The Slip Joint technology was also tested which is why the 4 meter diameter pile had a conical top, reducing to 3.26 meter. The hydraulic clamps used were capable to deal with this conical shape thanks to the special shaped jaws.

Application details

Application

Monopile installation

Pile type

Monopiles

Penetration

15m

PILE DETAILS

Pile type

Monopiles

Pile model

Slip joint

Pile length

27.25m

Pile weight

127t

Pile wall thickness

40-60mm

Pile diameter

3.26-4m

No. of piles

1

PROJECT DETAILS

Period

2016

Country

The Netherlands

Location

Maasvlakte 2, Rotterdam

Market

Offshore Renewables

System/end usage

Offshore Wind Turbine & Research

Operator or end customer

DOT

Installation contractor

DOT

Type of vessel

Floating sheerleg

Name of vessel and owner

Matador 3, Bonn & Mees

Mode

Anchors

challenge

Pile installation predictions

challenge

Pile installation efficiency

The challenges we’re facing today is our drive to come up with great ideas, solutions and support.

Main Reasons for solution choice

NO NEED FOR GRIPPER OR INSTALLATION FRAME

UPENDING, LIFTING, DRIVING IN SINGLE OPERATION

STABILITY

SELECTED EQUIPMENT

CAPE VLT-320

Equipment configuration

CAPE VLT-320 Single

Eccentric moment

320kgm

Max. line pull

500t

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