Offshore wind turbine barrel-in-barrel foundation

Abstract

The invention discloses an offshore wind turbine barrel-in-barrel foundation. The offshore wind turbine barrel-in-barrel foundation comprises an inner steel barrel (1), an outer steel reinforced concrete barrel (2), an outer barrel bottom plate (3), reinforcing filled soil (4), inter-barrel damping materials (5) and pressing stones (6). The outer steel reinforced concrete barrel (2) is located on the periphery of the inner steel barrel (1). The outer barrel bottom plate (3) is supported on the lower portion of the outer steel reinforced concrete barrel (2). The reinforcing filled soil (4) and the inter-barrel damping materials (5) are located between the inner steel barrel (1) and the outer steel reinforced concrete barrel (2). The pressing stones (6) are located on the outer barrel bottom plate (3). A steel barrel flange (7) is connected to the upper portion of the inner steel barrel (1). A construction and maintenance platform (8) for construction installation and routine maintenance is installed on the top of the outer steel reinforced concrete barrel (2). The offshore wind turbine barrel-in-barrel foundation is reasonable in structural design and convenient to install and construct; the embedded depth of the foundation can be reduced greatly, deviation rectifying difficulty is lowered, and manufacturing cost is low; cost of a large floating crane can be saved, and maintenance is convenient.

Description

technical field [0001] The invention belongs to the field of foundations for offshore wind turbines, and in particular relates to a cylinder-in-tube foundation for offshore wind turbines. Background technique [0002] At present, for the single pile foundation of offshore wind turbines used in sea areas with a water depth of about 10m, in addition to bearing the horizontal and vertical loads transmitted by the upper structure and the huge overturning moment, it also bears the impact of water flow and waves, resulting in long pile foundations. , deep into the soil and other characteristics. The construction of offshore monopile foundations is mainly completed by large floating cranes. The heavy foundation, deep soil penetration, and high requirements for deviation correction have resulted in high construction costs, resulting in high construction costs for the project. Contents of the invention [0003] Purpose of the invention: The purpose of the invention is to overcome ...

AI Technical Summary

Problems solved by technology

[0002] At present, for the single pile foundation of offshore wind turbines used in sea areas with a water depth of about 10m, in addition to bearing the horizontal and vertical loads transmitted by the upper structure and the huge overturning moment, it also bears the impact of water flow and waves, resulting in long pile foundations. , deep into the soil and other characteristics

The construction of the offshore single pile foundation is mainly completed by large floating cranes. The heavy foundation, deep soil penetration, and high requirements for deviation correction have resulted in high construction costs, resulting in high construction costs for the project.

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