A combined offshore wind turbine foundation suitable for deep water conditions and its installation method

An offshore wind turbine and combined technology, which is applied in infrastructure engineering, wind power generation, construction, etc., can solve the problems that it is difficult to meet the displacement requirements of offshore wind turbines, affect the normal operation of wind turbines, and low power generation efficiency, and achieve light weight and high quality. Easy to guarantee and fast installation

Active Publication Date: 2022-08-09
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as offshore wind power further enters the deep water environment, traditional fixed foundations are prone to larger rotation angles under wind turbine and environmental loads, and it is difficult to meet the stringent displacement requirements of offshore wind turbines.
In addition, although the construction cost of the floating foundation has certain advantages in the deep water environment, it still has a large drift and tilt in the marine environment, which affects the normal operation of the wind turbine and leads to low power generation efficiency

Method used

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  • A combined offshore wind turbine foundation suitable for deep water conditions and its installation method
  • A combined offshore wind turbine foundation suitable for deep water conditions and its installation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see figure 1 As shown, an installation method for a combined offshore wind turbine foundation suitable for deep water conditions includes the following steps:

[0040] After the pile foundation is positioned, use the piling ship or floating crane to cooperate with the hydraulic hammer to carry out construction steps such as hanging, erecting, inserting, hammering and sinking the pile, and drive the deep piles 8 of the group pile foundation structure and the anchor foundation structure one by one. In the seabed 13, make it embedded in the deep bearing layer, and then inject grouting material to fill the gap;

[0041] Assemble the truss structure and connect it with the anti-sinking plate 12, generally by welding, and then lift it to a predetermined position with a crane, so that the sleeves 14 set on the anti-sinking plate 12 are sunk into the pile group foundation structure one by one. For each deep pile 8, after leveling the anti-sinking plate 12, connect the sleeve 1...

Embodiment 2

[0046] see figure 2 As shown, an installation method for a combined offshore wind turbine foundation suitable for deep water conditions includes the following steps:

[0047] After the pile foundation is positioned, use the piling boat or the floating crane to cooperate with the hydraulic hammer to carry out the construction steps of hanging, erecting, inserting, hammering and sinking the piles, and driving the deep piles 8 of the pile group foundation structure into the seabed 13 one by one. , and make it embedded in the deep bearing layer, and then inject grouting material to fill the gap;

[0048] Assemble the truss structure and connect it with the anti-sinking plate 12, generally by welding, and then lift it to a predetermined position with a crane, so that the sleeves 14 provided on the anti-sinking plate 12 are sunk into each deep pile 8 one by one. , after leveling the anti-sinking plate 12, connect the sleeve 14 to the deep pile 8 by grouting and bolting;

[0049] ...

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Abstract

The invention discloses a combined offshore wind turbine foundation suitable for deep water conditions and an installation method thereof. Among them, the combined offshore wind turbine foundation suitable for deep water conditions includes pile group foundation structure, anti-sinking plate, truss structure, maintenance platform, buoy, anchor chain and anchor foundation structure. The pile group foundation structure includes several deep piles and each The deep piles are embedded and fixed in the seabed, the anti-sinking plate is connected to the foundation structure of the pile group, the bottom of the truss structure is connected to the anti-sinking plate, the maintenance platform is connected to the top of the truss structure, and the buoy is sleeved on the periphery of the truss structure. Several anchor chains are evenly connected and the other end of each anchor chain is fixed on the seabed through the anchoring infrastructure. The invention supports the wind turbine structure through the pile group foundation structure and the truss structure, and the mooring system composed of the buoy, the anchor chain and the anchor foundation structure can further constrain the displacement of the wind turbine structure, thereby increasing the bearing capacity of the offshore wind turbine foundation and ensuring the stability of the wind turbine structure. Safety.

Description

technical field [0001] The invention relates to the technical field of offshore wind turbine foundations, in particular to a combined offshore wind turbine foundation suitable for deep water conditions and an installation method thereof. Background technique [0002] In recent years, in order to cope with global warming and achieve sustainable development of energy utilization, new and clean energy has been vigorously developed internationally. As a power generation method with the most mature technology, the most large-scale development conditions and commercial development prospects in the field of new energy, wind power generation has achieved rapid development. As wind turbines extend from land to sea, offshore wind power is becoming the focus of new energy development. [0003] At present, fixed foundations are widely used for wind turbine foundations in offshore shallow water conditions. Among them, the pile foundation penetrates into the seabed soil layer through dy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/42E02D27/12
CPCE02D27/425E02D27/12Y02E10/72Y02E10/727
Inventor 董友扣薛芬芬沈侃敏王宽君
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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