NORDEX. Foundations. Nordex N117/3000

Transcription

1 Foundations Nordex N117/3000 Nordex Energy GmbH, Langenhorner Chaussee 600, Hamburg, Germany All rights reserved. Observe protection notice ISO K0801_042963_EN Revision 00, / 6

2 Natural foundation for N117/3000, 91 m hub height, DIBt 3 with and without buoyancy Brief description The foundation is designed as a circular flat foundation with a diameter of m (foundation with buoyancy) or m (foundation without buoyancy). The base diameter is 4.90 m. The height of the foundation is 3.00 m from the top edge of the base to the foundation level of the base with the base being settled 30 cm below the foundation. The height of the foundation plate varies from 1.30 m linear up to the top edge. Below the foundation a binder layer of at least 10 cm height must be present. The foundation depth can be adjusted to local conditions whilst taking into account the permissible overall height and the ground water level. A permanent soil backfill on the foundation plate forms part of the foundation and must not be removed. To anchor the tower an anchor cage has been installed into the concrete body of the foundation. The anchor cage consists of 2 x 80 anchor bolts, a load-spreading plate and an anchor plate. The T flange of the tower is inserted into the anchor bolts and screwed on. The foundation has been tested for a wind turbine N117/3000, 91 m at locations up to and including wind zone 3 in accordance DIBt-guideline for WTs, , annex B. Subsoil requirements» Edge pressure (foundation without buoyancy): a Base, max. = 240 kn/m 2» Static torsion spring constant: kkp st a t = MNm/rad Dynamic torsion spring constant: dy n = MNm/rad» The maximum ground water level must be below the foundation base for the variant without buoyancy and for the variant with buoyancy at the ground level.» All subsoil requirements must be confirmed by a geotechnical engineer The complete subsoil requirements can be requested from Nordex. k (D, (p, dyn K0801_042963_EN Revision 00, / 6

3 Natural foundation for N117/3000, 91 m hub height, DIBt 3 Diagram not to scale Dimensions in [m] ţ (foundation with buoyancy); m (foundation without buoyancy) 0.00 K0801_042963_EN Revision 00, / 6

4 Natural foundation for N117/3000, 120 m hub height, DIBt 3 with and without buoyancy Brief description The foundation is designed as a circular flat foundation with a diameter of m (foundation with buoyancy) or m (foundation without buoyancy). The base diameter is 6.00 m. The height of the foundation is m from the top edge of the base to the foundation level of the base with the base being settled 25 cm below the foundation. The height of the foundation plate varies from 0.9 m linear up to the top edge. Below the foundation a binder layer of at least 10 cm height must be present. The foundation depth can be adjusted to local conditions whilst taking into account the permissible overall height and the ground water level. A permanent soil backfill on the foundation plate forms part of the foundation and must not be removed. To anchor the tower an anchor cage has been installed into the concrete body of the foundation. The anchor cage consists of 2 x 100 anchor bolts, a load-spreading plate and an anchor plate. The T flange of the tower is inserted into the anchor bolts and screwed on. The foundation has been tested for a wind turbine N117/3000, 120 m at locations up to and including wind zone 3 in accordance DIBt-guideline for WTs, , annex B. Subsoil requirements» Edge pressure (foundation without buoyancy): a Base, max. = 203 kn/m 2» Static torsion spring constant: km, st s t a t = MNm/rad Dynamic torsion spring constant: km, dyn = MNm/rad The maximum ground water level must be below the foundation base for the variant without buoyancy and for the variant with buoyancy at the ground level. All subsoil requirements must be confirmed by a geotechnical engineer The complete subsoil requirements can be requested from Nordex. K0801_042963_EN Revision 00, / 6

5 Natural foundation for N117/3000, 120 m hub height, DIBt 3 Diagram not to scale Dimensions in [m] ţ (foundation with buoyancy); m (foundation without buoyancy) K0801_042963_EN Revision 00, / 6

6 Material quantities and properties for the foundation Only the main components are listed. A complete list of services for foundation construction can be requested from Nordex. Foundation Buoyancy Diameter Reinforcement Concrete Anchor cage R91 With 21 m B 500 S (B) 63.3 t R91 Without 19 m B 500 S (B) 57.5 t R120 With 23.5 m B 500 S (B) 83.6 t R120 Without 21.5 m B 500 S (B) 70.5 t Steel type Mass Grade Quantity Anchor bolts Grad e m m m3 3.4 m m m m m3 2x80x M42x3071 2x80x M42x3071 2x100x M42x3794 2x100x M42x3794 Mass 12.6 t 12.6 t 30.6 t 30.6 t K0801_042963_EN Revision 00, / 6