Abstract: An assembly crossbeam for placing on a tower top, in particular on a tower top of a tower of a wind turbine, and to a method for drawing in cables, in particular tendons, along a tower, in particular a tower of a wind turbine. The assembly crossbeam comprises a main support having a first and second end, and two auxiliary supports, each having a first and second end, wherein the two auxiliary supports are positioned on either side of the main support with each of their respective first ends at the centre of the main support, wherein on the main support there is a first trolley which can move along at least a first section of the main support, and wherein on said main support there is a second trolley which can move along at least a second section of the main support.

Abstract: An arrangement with a concrete foundation and a tower for supporting a nacelle of a wind energy plant wherein the tower comprises a number of tower segments which are arranged along a tower axis and at least an uppermost tower segment comprises a head flange and a foot flange, wherein an uppermost tower segment of the number of tower segments is formed as a steel element; and a number of tension or traction wires braces the concrete foundation with the head flange of the uppermost tower segment under tensile stress. A method for erecting a tower for supporting a nacelle of a wind energy plant and to a wind energy plant comprising an arrangement according to the present embodiments.

Abstract: A wind energy plant is provided with a foundation base and a tower which is placed on the foundation base. The foundation base has a foundation plate below ground level and a foundation plinth on the foundation plate above ground level. On the foundation plinth a tension cord connector is provided with a plurality of bores for receiving tension cords. The tension cords are tensioned on an underneath side of the connector by means of a tension cord head. The foundation plate and the foundation plinth are cast in one piece from site-mixed concrete.

Abstract: A wind turbine having a foundation. The foundation has a first foundation portion having a top side and a concrete foundation pedestal having a top side. The top side of the concrete foundation pedestal is annular and projects beyond the top side of the first foundation portion. The wind turbine also has a steel tower having a plurality of tower segments, wherein a lower tower segment has a flange having a plurality of through bores. The flange is placed on a top side of the concrete foundation. The wind turbine further has a plurality of clamping elements. A lower end of the clamping elements is fixed by means of a fixing unit in or under the first foundation portion. An upper end of the clamping elements projects beyond an upper end of the concrete foundation pedestal and extends through the through holes. The upper ends of the clamping elements are braced by means of fixing units. An outward side of the concrete foundation pedestal is of a conical configuration.

Abstract: A wind turbine having a foundation. The foundation has a first foundation portion having a top side and a concrete foundation pedestal having a top side. The top side of the concrete foundation pedestal is annular and projects beyond the top side of the first foundation portion. The wind turbine also has a steel tower having a plurality of tower segments, wherein a lower tower segment has a flange having a plurality of through bores. The flange is placed on a top side of the concrete foundation. The wind turbine further has a plurality of clamping elements. A lower end of the clamping elements is fixed by means of a fixing unit in or under the first foundation portion. An upper end of the clamping elements projects beyond an upper end of the concrete foundation pedestal and extends through the through holes. The upper ends of the clamping elements are braced by means of fixing units. An outward side of the concrete foundation pedestal is of a conical configuration.

Abstract: A wind energy plant is provided with a foundation base and a tower which is placed on the foundation base. The foundation base has a foundation plate below ground level and a foundation plinth on the foundation plate above ground level. On the foundation plinth a tension cord connector is provided with a plurality of bores for receiving tension cords. The tension cords are tensioned on an underneath side of the connector by means of a tension cord head. The foundation plate and the foundation plinth are cast in one piece from site-mixed concrete.

Abstract: An arrangement with a concrete foundation and a tower for supporting a nacelle of a wind energy plant wherein the tower comprises a number of tower segments which are arranged along a tower axis and at least an uppermost tower segment comprises a head flange and a foot flange, wherein an uppermost tower segment of the number of tower segments is formed as a steel element; and a number of tension or traction wires braces the concrete foundation with the head flange of the uppermost tower segment under tensile stress. A method for erecting a tower for supporting a nacelle of a wind energy plant and to a wind energy plant comprising an arrangement according to the present embodiments.

Abstract: A wind energy plant is provided with a foundation base and a tower which is placed on the foundation base. The foundation base has a foundation plate below ground level and a foundation plinth on the foundation plate above ground level. On the foundation plinth a tension cord connector is provided with a plurality of bores for receiving tension cords. The tension cords are tensioned on an underneath side of the connector by means of a tension cord head. The foundation plate and the foundation plinth are cast in one piece from site-mixed concrete.

Abstract: The invention concerns a pylon base section for arrangement and fixing on a foundation and for the erection of a pylon of a wind power installation thereon including an outer lower annular flange for placement on the foundation and for fixing to the foundation, an inner upper annular flange for placement and fixing of a pylon segment with a corresponding lower pylon flange thereon, an inner lower support flange for placement on the foundation, and inner support elements, in particular support struts, for supporting the upper annular flange relative to the lower support flange.

Abstract: The invention concerns a pylon base section for arrangement and fixing on a foundation and for the erection of a pylon of a wind power installation thereon including an outer lower annular flange for placement on the foundation and for fixing to the foundation, an inner upper annular flange for placement and fixing of a pylon segment with a corresponding lower pylon flange thereon, an inner lower support flange for placement on the foundation, and inner support elements, in particular support struts, for supporting the upper annular flange relative to the lower support flange.