A combined foundation structure system with three barrel foundations with supports

Abstract

The invention discloses a combined basic structural system of three cylinder type foundations with support. Connecting wires of the center points of the three cylinder type foundations form a triangle; a pile body is arranged at the top of each cylinder type foundation; a joint connecting piece is arranged above the central positions of the three cylinder type foundations, a profiled-steel beam is connected between the joint connecting piece and the top of each pile body, and each profiled-steel beam is inclined downwards from the end connected with the joint connecting piece to the end connected with the corresponding pile body; the roots of the pile bodies are mutually connected through support among the piles, and a support between cylinders is connected between the adjacent two cylinder type foundations. Through the profiled-steel beam and the pile bodies, larger bending moment transmitted by an upper structure is effectively converted into tensile force and pressure approximately at the cylinder type foundations so as to exert the maximum bearing capacity of the cylinder type foundations and save the materials; moreover, the complete technology of floating transportation, sinking and leveling can be realized in the construction, so that the construction period is short, and the construction cost of an offshore wind plant is 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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