Offshore wind power bottle-shaped gravity foundation

Abstract

The invention relates to an offshore wind power bottle-shaped gravity foundation and aims to lower construction risk, save construction cost and enable the foundation itself to meet self-floating stabilizing requirements and to realize short-distance consignment and immersion construction without using a large crane ship. The foundation is similar to a bottle with small end up, a small-aperture middle upright directly leading to the bottom is arranged at the center of the foundation, the upper end of the middle upright is connected with a fan tower, a closed large-diameter round box is externally connected with the middle of the middle upright below and composed of a baseplate, a box outer wall, a diameter-variable obliquely-arranged top cover plate and box partitions dividing the round box into a plurality of radial bays, one sides of the box partitions are connected with the outer wall of the middle upright while the other sides of the same are connected with the box outer wall, and the upper end of the top cover plate is connected with the outer wall of the middle upright while the lower end of the same is connected with the upper edge of the box outer wall. The offshore wind power bottle-shaped gravity foundation is suitable for construction conditions that no large crane ship equipment is in short supply in China and seabed environments with high-carrying-capacity foundations on shallow surface layers.

Description

technical field [0001] The invention relates to the offshore wind power industry, in particular to a bottle-shaped gravity foundation for offshore wind power. It is suitable for construction conditions where there is a lack of large-scale crane equipment in China, and for seabed environments where the shallow surface layer has a foundation with a high bearing capacity. Background technique [0002] At present, the common offshore wind power foundation structures in China are pile foundations, including single pile foundations, multi-pile jacket foundations and high pile cap foundations. Gravity foundations have been widely used in foreign offshore wind power fields, but they have not been well applied in China due to the limitations of offshore construction machinery. [0003] With the large-scale construction of domestic offshore wind power, it is found that in the coastal areas of Fujian and Guangdong, most of them are lithological foundations with high bearing capacity. ...

AI Technical Summary

Problems solved by technology

Gravity foundations have been widely used in foreign offshore wind power fields, but they have not been well applied in China due to the limitations of offshore construction machinery.

[0003] With the large-scale construction of domestic offshore wind power, it is found that in the coastal areas of Fujian and Guangdong, most of them are lithological foundations with high bearing capacity. This type of foundation requires high piling and drilling equipment for pile foundation construction, and the construction is difficult and difficult. The offshore operation takes a long time and consumes a lot of steel, resulting in expensive construction costs

The use of gravity foundations in this area has certain advantages, but the use of ordinary gravity foundations similar to foreign offshore wind power projects has a heavy foundation weight and requires large-scale crane equipment for sinking construction. The domestic market is small and the cost of use is high

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