Long and short pile bucket foundation suitable for deep water complex sea areas and construction method of bucket foundation

Abstract

The invention belongs to the technical field of offshore wind power foundations, and discloses a long and short pile bucket foundation suitable for deep water complex sea areas and a construction method of the bucket foundation. The bucket foundation comprises a bucket structure composed of a bucket top cover and a bucket apron board. A plurality of side tanks are arranged in the bucket structure.A plurality of short piles are evenly and annularly distributed in the bucket structure, and the short piles are arranged in the side tanks. The top ends of the short piles are flush with the buckettop cover, holes are formed in the portions, corresponding to top openings of the short piles, of the bucket top cover, and the bottom ends of the short piles are basically flush with the bucket apronboard. A long pile is embedded in each short pipe, the tops of the long piles of the bucket foundation arranged in place are cut off to be flush with the bucket top cover, and the top ends of the long piles and the top ends of the short piles are subjected to cover sealing treatment together. According to the construction method, the long piles are driven into the earth and then the bucket structure is sunk or the bucket structure is sunk and then the long piles are driven into the earth. The bucket foundation has good anti-overturning performance, skid resistance and stability, high in bearing capacity and precise to construct and install, the installation stability and safety of the bucket foundation in the deep water complex sea areas are improved, and the application range of bucket foundation installation is expanded.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power foundations, and in particular relates to a new cylindrical foundation suitable for deep water complex sea areas and a construction method thereof. Background technique [0002] With the development of society, the contradiction between global energy supply and demand has become increasingly prominent. Out of the consideration of the limitation of energy itself and the safety issues caused by it and the sustainable development of the country, wind energy has been recognized by various countries as a renewable clean energy. favor. my country has a vast coastline and abundant offshore wind energy resources. At present, my country's offshore wind power development is mainly concentrated in shallow waters, but most of the shallow waters have poor geological conditions, and there are certain protections and restrictions on the development of offshore waters in the country's sustainable dev...

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of stable and accurate installation of the offshore wind turbine foundation under the load of deep water, complex geology, poor sea area and harsh wind, wave and current environment, as well as insufficient foundation stability and insufficient bearing capacity. The long-short pile-tube foundation and its construction method in deep-water and complex sea areas. This foundation structure has good anti-tilting and anti-sliding stability, high bearing capacity, and accurate construction and installation, which improves the stability of the installation of cylindrical foundations in deep-water and complex sea areas. and safety, further expanding the scope of application of cylindrical foundation installation

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