POSITIONING DEVICE AND METHOD FOR ACCURATE MUTUAL ALIGNMENT OF A FIRST AND A SECOND TUBULAR ELEMENT

摘要

Described is a positioning device for accurate mutual alignment of a first and a second tubular element along a common axis extending in a longitudinal direction of the two elements for the purpose of coupling these elements. The positioning device comprises an engaging means with which the device can be rigidly connected to the first element; and a translation-rotation device which, in the situation where it is connected to the first element, is extendable in a radial direction of the first element to a position against an outer surface of the second element and can exert a radial and peripheral force thereon, whereby the elements are displaced in the radial direction or rotated relative to each other. Also described is a corresponding method. The device and method are particularly suitable for accurate mounting of a transition piece on a mono-pile foundation of an offshore wind turbine.