Space truss multi-barrel base of offshore wind power unit

Abstract

The invention discloses a space truss multi-barrel base of an offshore wind power unit, which mainly comprises a connecting cylinder, three suction barrels arranged in a triangle shape or four suction barrels arranged in a quadrangle shape, and support pillars the number of which is the same as that of the suction barrels, wherein each suction barrel is fixedly connected with the connecting cylinder through the corresponding support pillar; and a support member with a truss structure is connected between every two support pillars. The invention is of an integrated structure which consists of a space truss system and a multi-suction-barrel base, transfers the overturning load suffered by the whole base into vertical underdraught and up-pull load on single-barrel base, fully utilizes the superiority of multi-barrel base for bearing vertical load, has the advantages that the bearing load of the structure is reasonable, and solves the difficulties that the construction cost of the offshore wind power unit is high and the construction is complicated.

Description

technical field [0001] The invention relates to a structural form of an offshore structure foundation, in particular to a structural form of an offshore wind turbine foundation. Background technique [0002] Most of my country's offshore seabeds are deep and soft soils, and the construction of offshore wind turbines on such foundations poses a great challenge to the selection of foundations. The types of traditional offshore wind turbines are: single pile foundation and group pile foundation. For the single pile foundation, due to its low level and compressive bearing capacity, in order to meet the bearing capacity requirements, the pile foundation needs to be driven into the bearing layer with better bearing conditions, so the pile length is often longer and the cost is higher. Geological conditions are demanding, and special large-scale piling vessels are required for construction, and piling is difficult, which further increases construction costs. For the construction ...

AI Technical Summary

Problems solved by technology

For the single pile foundation, due to its low level and compressive bearing capacity, in order to meet the bearing capacity requirements, the pile foundation needs to be driven into the bearing layer with better bearing conditions, so the pile length is often longer and the cost is higher. The geological conditions are demanding, and special large-scale piling vessels are required for construction, which makes piling difficult and further increases construction costs

For the construction of offshore concrete caps for pile group foundations, temporary construction platforms and formwork need to be erected, and the construction process is complicated

In addition, offshore wind turbines are gradually developing towards larger water depth conditions (15-40m), and traditional foundation forms are difficult to meet this requirement. Therefore, it is necessary to seek a new foundation structure with strong resistance to overturning loads of the upper structure, convenient construction, and low cost. form

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