A combined foundation structure system of three barrel foundations for a concrete support structure

Abstract

The invention relates to the field of foundation structures, and discloses a three-bucket-foundation combined foundation structure system of a concrete supporting structure. The three-bucket-foundation combined foundation structure system comprises three bucket foundations, wherein the connecting lines of the center points of the three bucket foundations form a triangle. The top of each bucket foundation is connected with a concrete ballast tank structure. The part between every two adjacent concrete ballast tank structures is connected with a vertical concrete connecting piece. A concrete connecting bottom plate is arranged among the three vertical concrete connecting pieces. A concrete column located in the center is arranged at the upper portion of the concrete connecting bottom plate. A concrete connecting top plate is arranged on the top of the concrete column. The concrete column and each concrete ballast tank structure are connected through an oblique sheet variable section concrete structure. Through the concrete supporting structure similar to a special-shaped column, large bending moment transmitted from an upper structure is effectively and approximately converted into pull force and pressure at the bucket foundation positions, so that the maximum bearing force of the bucket foundations is brought into play, and materials are saved.

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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