An arc type ice-resistant wind power foundation

Abstract

The invention relates to an arc type anti-icing wind power foundation. The foundation comprises an upper foundation with a small transverse dimension, a middle foundation and a lower foundation with alarge transverse dimension, the shape of the whole middle foundation is an inverted cone shape or a horn shape with a smaller upper part and a larger lower part, the middle foundation comprises an arc type main pile leg, the arc type main pile leg is in an arc shape, the cross section of the arc type main pile leg is shuttle-shaped, the shuttle-shaped cross section is divided into a long axis anda short axis, when an ice sheet acts on the arc type pile leg in parallel to the cross-section short-axis direction, the ice sheet is forced to generate a bending failure mode, and when the ice sheetacts on the arc type pile leg in parallel to the cross-section long-axis direction, a tip forms an anti-icing mode of cutting the ice sheet by an ice breaking blade.

Description

technical field [0001] The invention relates to an arc-shaped wind power infrastructure, especially applied to sea areas in cold regions where ice resistance performance is required. Background technique [0002] With the depletion of oil resources and human desire for clean energy, offshore wind power technology has gradually gained the favor of various countries. The sea area in the cold area has attracted much attention because of its high wind energy density and abundant wind resources. However, offshore wind power foundations installed in cold regions inevitably encounter sea ice loads. [0003] Offshore wind power foundations mainly reduce the effect of ice loads by adding anti-ice cones. The principle is to transform the ice load and the crushing failure mode of upright piles into a bending failure mode through the slope of the ice cones. The compressive strength, therefore, the bending mode ice force is much smaller than the squeezing ice force. [0004] At presen...

AI Technical Summary

Problems solved by technology

[0004] At present, the measure of installing anti-icing cones is mainly applied to single-pile wind power foundations. However, this measure is difficult to apply to jacket-type wind power foundations. The spacing is small, and the maximum diameter of the anti-icing cone is often very large enough to ensure the anti-icing effect at high and low water levels

Apparently, the installation of such large ice cones capable of anti-icing effect on the wind power jacket foundation will result in insufficient gaps between the pile legs of the wind power foundation for the smooth passage of sea ice, which will lead to the accumulation of ice sheets, seriously threatening Safety of wind turbine structure

In addition, the installation of large ice cones increases the wave load on the foundation of the wind turbine, which is not conducive to the safe operation of the wind turbine during non-ice periods

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