Patent ID: 7785040
Filing Date: 2010-08-31
Classification: E02D,E04H,F03D,Y02E

Abstract:
1. A method for forming a mono pile foundation in soil for a wind turbine tower, comprising drilling a plurality of holes into the soil, the plurality of holes being arranged along a curve having a contour corresponding to a cross-dimensional shape of the mono pile, wherein a first hole is drilled and filled with a temporary filling material before a subsequent hole adjacent the first hole is drilled; placing the mono pile in an annular cavity, the annular cavity being formed by the plurality of holes alone and/or by the mono pile breaking up intermediate soil walls between adjacent holes in the plurality of holes while being placed therein; forming an additional hole adjacent the annular cavity so as to be in communication with a lower portion of the cavity; and introducing concrete into the cavity using the additional hole so as to fill the remaining portions of the holes with concrete after placing the monopile.