A Foundation Structure System Combining Four Tube Foundations

Abstract

The invention discloses a base structure system combined by four cylindrical bases. A quadrangle is formed by the connecting lines of centers of the four cylindrical bases, a pile body is arranged at the top of each cylindrical base, and the center line of each pile body and the center line of the corresponding cylindrical base are located on the same straight line; a node connecting piece is arranged above the center position of the four cylindrical bases, a profiled-steel beam is connected between the node connecting piece and the outer side of the top part of each pile body, and each profiled-steel beam is downwards inclined from one end part, connected with the node connecting piece, of the profiled-steel beam to the end part, connected with the corresponding pile body, of the profiled-steel beam. According to the base structure system provided by the invention, larger bending moment transmitted by an upper structure can be effectively and similarly converted to a tensile force and a pressure at the cylindrical bases by the profiled-steel beams and the pile bodies, so as to give play to the maximum bearing force of the cylindrical bases, therefore materials can be saved; furthermore, a complete technology of 'floating-sinking-leveling' can be realized in the construction, the construction period is short, and the construction cost of an offshore wind power plant can be reduced.

Description

technical field [0001] The invention relates to the field of basic structures of ports, oceans, water conservancy and bridge engineering, and in particular relates to a basic structure in which multiple tubes are combined to optimize the stress of the tube-shaped foundation. Background technique [0002] At present, in the field of marine engineering such as offshore wind power projects, the foundation structures usually have pile foundations, gravity foundations, jacket foundations, negative pressure foundations and floating platforms, etc. These foundation structures usually require large machines for transportation and installation , resulting in higher construction costs and longer construction periods. Compared with the traditional foundation structure, the cylindrical foundation is widely used in marine engineering due to its low cost, convenient construction, safe and reliable use, and recyclable reuse. [0003] However, the environment of the foundation structure of...

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Problems solved by technology

[0003] However, the environment of the foundation structure of offshore wind power generation is very complex. In addition to the vertical force of the structural weight of the wind turbine tower transmitted from the superstructure, the load also includes the horizontal force and bending moment transmitted from the wind load to the foundation structure, and Waves, ocean currents, sea ice loads, etc.

Large bending moment loads generally lead to a larger diameter of the cylindrical foundation, while the construction of a large-diameter single-cylinder foundation has more restrictions, such as the transportation and installation process requiring large machines and tools, etc.

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