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Offshore single pile foundation post-installation reinforcing device and installation method

A technology for reinforcing device and monopile foundation, which can be used in infrastructure engineering, construction, etc., and can solve problems such as huge costs.

Pending Publication Date: 2021-05-18
HUANENG CLEAN ENERGY RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the scour range and depth are large, the cost of these common methods is very huge, and the cost of landfill treatment for a single machine site exceeds 10 million yuan

Method used

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  • Offshore single pile foundation post-installation reinforcing device and installation method
  • Offshore single pile foundation post-installation reinforcing device and installation method
  • Offshore single pile foundation post-installation reinforcing device and installation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] refer to figure 1 with figure 2 , the tower 1 is set on the top of the single pile 2, and the reinforcement tool 3 is installed above the mud surface of the single pile 2. The reinforcement tool 3 includes a diagonal brace 31, an upper collar 32, a lower collar 33 and a lower ring plate 34, and the bottom inserting type The pile 36 is connected with the anchor foundation 37 through grouting, and adopts a detachable two-piece split type. The upper collar 32 and the lower collar 33 are connected as a whole by a hinge 35, and the hinge 35 is connected with the upper collar 32 and the lower collar 33. One end is pre-assembled during manufacture, which is convenient for later installation. The weight of each component is small, and no special transportation and installation ship is required, which reduces transportation and construction costs.

[0032] The upper collar 32 and the lower collar 33 are provided with a locking mechanism on the outside of the single pile 2. Spe...

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Abstract

The invention discloses an offshore single pile foundation post-installation reinforcing device and an installation method. The device comprises inclined struts, an upper lantern ring, a lower lantern ring and a lower ring plate, wherein the lower lantern ring and the lower ring plate are connected through the inclined struts; the diameter of the lower ring plate is larger than that of the upper lantern ring and that of the lower lantern ring; the upper lantern ring, the lower lantern ring and the lower ring plate are split in the circumferential direction; an insertion type pile and an anchoring foundation are arranged below the lower ring plate; and the insertion type pile is inserted into the anchoring foundation. The device does not bear the vertical and transverse loads of an upper fan, mainly provides an additional pile soil effect, reinforces the foundation of an overall supporting structure and improves the frequency; the upper lantern ring, the lower lantern ring and the lower ring plate are designed in a split mode, and later installation is facilitated; and the weights of all the components are small, no special transportation and installation ship is needed, the transportation and construction cost is reduced, and the device is more economical compared with a common anti-scouring scheme.

Description

technical field [0001] The invention belongs to the field of single-pile foundations of wind power generating sets, and in particular relates to a post-installation reinforcement device and an installation method of offshore single-pile foundations. Background technique [0002] Offshore wind energy is abundant, and it is adjacent to economically developed load centers in the east and south. Vigorously developing offshore wind power is of great significance for supporting energy strategic transformation. The type of wind turbine foundation is one of the biggest differences between offshore wind power generation and onshore wind power generation. Offshore wind turbine foundations include single piles, high pile caps, jackets, suction cylinders, gravity foundations, etc. Among them, single pile foundations are the most widely used foundation types . [0003] The soil conditions of offshore wind farms are relatively weak, and most of the topsoil is clay, with deep and thick la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/44E02D27/52E02D27/12
CPCE02D27/12E02D27/44
Inventor 周昳鸣郭小江刘鑫闫姝黄和龙林健聪魏世哲林少国严家涛陈明光郭永发李旭如张乐扬
Owner HUANENG CLEAN ENERGY RES INST
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