Multi-cylindrical foundation combined foundation structure system

Abstract

The invention discloses a multi-cylindrical foundation combined foundation structure system. The connecting lines of the center points of four cylindrical foundations form a quadrangle; a pile body is arranged on the top of each cylindrical foundation; the central line of each pile body and the central line of the cylindrical foundation corresponding to the pile body are on the same straight line; a node connecting component is arranged above the center positions of the four cylindrical foundations; a profile steel beam is connected between the node connecting component and the outer side of the top of each pile body; each profile steel beam is downwards inclined from the end part connected with the node connecting component to the end part connected with the pile body; an inter-pile support are connected between the roots of the pile bodies; an overall steel pipe is connected between every two cylindrical foundations. The relatively large torque transferred by an upper part structure is approximately converted into tensile force and pressing force at the cylindrical foundations through each profile steel beam and each pipe body, so that the highest bearing capacity of the cylindrical foundations is achieved, materials are saved, the complete technology of 'floatation transportation, sinking and leveling' can be realized during construction, the construction period is short, and the building cost of an offshore wind power station 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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