A Foundation Structure System Combining Three Tube Foundations

Abstract

The invention discloses a foundation structural system combined by three bucket foundations, wherein a triangle is formed by the central-point connecting lines of the three bucket foundations, a pile body is arranged on the top of each bucket foundation, the central line of each pile body and the central line of the corresponding bucket foundation are positioned on the same straight line, a node connecting piece is arranged above the central positions of the three bucket foundations, a shaped steel beam is connected between the node connecting piece and the outer side of the top of each pile body, and each shaped steel beam is downwards inclined from the end part connected with the node connecting piece to the end part connected with each pile body. According to the foundation structural system, greater bending moment transferred by an upper structure is effectively and approximately transformed into pull and pressure at the bucket foundations through the shaped steel beams and the pile bodies to exert the maximum bearing capacity of the bucket foundations, so that materials are saved; moreover, a set of floating transportation-sinking-leveling technologies can be realized in construction, so that the construction period is short, and the construction cost of offshore wind plants is lowered.

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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