Fixed levelling structure for foundation installation of offshore wind turbine jackets

Abstract

The invention discloses a fixing and leveling structure for mounting a marine fan jacket foundation. The fixing and leveling structure comprises a plurality of pile legs of the marine fan jacket foundation and tubular undersea piles, wherein the pile legs is in one-to-one correspondence to the undersea piles; every pile leg is inserted into the undersea pipe from a nozzle at the upper end of the undersea pile and suspended and nested in an undersea pile; a first connecting piece and a second connecting piece which are used for fixing the pipe legs are arranged between every undersea pile and every pile leg; the first connecting pipes are integrated with the top ends of the undersea piles; the second connecting pieces are integrated with the outer circumference of the pile legs; the first connecting pieces and the second connecting pieces are locked; and an adjusting shim used for adjusting the mounting heights of the pile legs is arranged between every first connecting piece and every second connecting piece. The invention aims to provide a grouting locating structure for mounting the marine fan jacket foundation, so that subsequent grouting has the advantages that the cost is low, the operation is convenient, disassembly is not needed, and the operation time is little.

Description

technical field [0001] The invention relates to an offshore wind turbine structure, in particular to a fixed leveling structure used for foundation installation of an offshore wind turbine jacket. Background technique [0002] Since the coastal seabed in my country is dominated by muddy soft soil, the foundations of offshore wind turbines are mostly jacket foundations with three piles, four piles or more piles. High-strength grout secures the jacket foundation legs to the subsea piles. [0003] Due to the high accuracy requirements of the wind turbine on the foundation installation surface and the limitation of the accuracy of the piling equipment, foundation leveling has become a key step in the installation. In addition, when grout is poured between the foundation pile legs and the seabed piles, during the curing process, it is necessary to ensure that The relative position of the foundation pile leg and the seabed pile remains unchanged to ensure the grouting strength, bu...

AI Technical Summary

Problems solved by technology

[0003] Due to the high accuracy requirements of the wind turbine on the foundation installation surface and the limitation of the accuracy of the piling equipment, foundation leveling has become a key step in the installation. In addition, when grout is poured between the foundation pile legs and the seabed piles, during the curing process, it is necessary to ensure that The relative position of the foundation pile leg and the seabed pile remains unchanged to ensure the grouting strength, but due to sea conditions, weather and other reasons, the foundation or the seabed pile will bear considerable wind loads, wave loads, etc., in order to ensure that their relative positions remain unchanged, At present, hydraulic positioning platforms or pile holders are used at home and abroad, but the operation is complicated, the investment is large, the cost is high, and it needs to be disassembled, which is time-consuming and labor-intensive.

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