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Offshore wind turbine tower foundation structure and installation method

A technology for offshore wind turbines and infrastructure, applied in infrastructure engineering, construction, etc., can solve the problems of high risk, long construction period, expensive construction cost, etc., to reduce dynamic response, reduce construction difficulty, and enhance overall stiffness and horizontal bearing capacity. Effect

Active Publication Date: 2016-10-12
FUJIAN YONGFU POWER ENG
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Problems solved by technology

The length setting of the pile foundation is not only controlled by economic indicators, but also by the difficulty of construction, and large-diameter pile rock-socketing requires large-scale construction vessels, piling and drilling rig equipment. The construction cost is expensive, the construction period is long, and the risk is high. It is a worldwide The difficult problem has become a restrictive factor for the development of wind turbine foundation

Method used

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  • Offshore wind turbine tower foundation structure and installation method
  • Offshore wind turbine tower foundation structure and installation method
  • Offshore wind turbine tower foundation structure and installation method

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Embodiment 1

[0045] Please refer to Figure 1 to Figure 3 Shown, embodiment one of the present invention is:

[0046]An offshore wind tower basic structure, comprising a wind tower 3, the lower end of the wind tower 3 is connected to a deck platform 11, and the lower side of the deck platform 11 is provided with four main ducts 12 at intervals, and the lower ends of the main ducts 12 are A cylinder 13 is provided, and a plurality of piles 21 connected by connectors 22 are evenly distributed in the cylinder 13, and the piles 21 and the cylinder 13 are connected by grouting. An outer ring reinforcement plate is provided, and diagonal braces 15 fixedly connected to the deck platform 11 are evenly distributed on the fan tower 3 and located on the lower side of the outer ring reinforcement plate. Four main ducts 12 are arranged at intervals on the lower side of the deck platform 11. The main ducts 12 are straight ducts or inclined ducts, the angle between the inclined ducts and the horizontal ...

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Abstract

The invention relates to the field of offshore wind power mechanisms and aims to provide an offshore wind turbine tower foundation structure and an installation method. The offshore wind turbine tower foundation structure comprises an offshore jacket and a column pile component, wherein the offshore jacket comprises one or more cylinders arranged on the bottom, the column pipe component comprises one or more parallel column piles, the top of the column pile component is arranged in the cylinders, the portions, in the cylinders, of the column piles are connected through connectors, and the cylinders are grouted to enable the column pile component to be connected with the cylinders. The offshore wind turbine tower foundation structure has the advantages that the column piles can be small-diameter steel pipe piles, the multiple column piles are mutually connected through the connectors and connected with a sleeve on the bottom of a main conduit of the offshore jacket through grouting, so that a grid structure is formed by the column piles, structure inertia moment is increased, the overall rigidity and horizontal bearing capacity of the structure are improved, horizontal displacement of the bodies of the column piles is reduced, and the anti-topple capacity of a foundation is improved.

Description

technical field [0001] The invention relates to the field of offshore wind power mechanisms, in particular to an offshore wind turbine tower foundation structure and an installation method. Background technique [0002] In the case of increasing energy shortage, offshore wind power is developing rapidly as a clean and renewable energy source. As the support system of offshore wind turbines, the foundation of the wind turbine is responsible for the wind load transmitted by the transitional connection section of the foundation and the wave load and water flow load received by itself. And the transfer of berthing force and impact force to the foundation soil plays a very important role in ensuring the overall safety of offshore wind power. [0003] Pile foundations have always been favored due to their excellent performance and have become the main type of offshore wind power foundations. More than 95% of offshore wind power foundations worldwide use pile foundations. However,...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D27/44E02D27/52
CPCE02D27/425E02D27/44E02D27/52
Inventor 游先辉赖福梁王磊欧寅华范夏玲宋启明徐振斌洪琪罗松财
Owner FUJIAN YONGFU POWER ENG
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