Pile sinking construction method of offshore wind power pile group foundation and special guide frame

Abstract

The invention discloses a pile sinking construction method of an offshore wind power pile group foundation and a special guide frame. Steel pipe piles driven through the construction method are convenient in construction and accurate in position, verticality, elevation and height difference, and can guarantee the structure stress uniformity and scientificity. A sinking prevention plate is welded at the bottom of the guide frame; the guide frame is placed on a seabed through the sinking prevention plate; if the seabed is slightly concave and convex, as the area of the anti-sinking plate is large, the whole can be kept smooth; but the sinking prevention plate increases the weight of the guide frame, and the sinking prevention plate is frequently sunk into sludge of the seabed, so that the lifting difficulty is greatly improved; the guide frame adopts detachable upper and lower layers of structures; after pile driving, bolts for connecting the upper guide frame with the lower guide frame are disassembled, so that users can firstly lift up the upper guide frame, and then, lift out the lower guide frame, the lifting weight can be reduced, and the difficult lifting caused by absorption of the sinking prevention plate by the sludge is prevented; and multiple through holes are formed in the sinking prevention plate to reduce the absorption effect on the sinking prevention plate by the sludge.

Description

technical field [0001] The invention relates to a pile sinking construction method for offshore wind power pile group foundations and a special guide frame. Background technique [0002] With the rapid development of domestic offshore wind power generation, especially high-power wind turbines and deep-water offshore wind farms, the geological conditions in different sea areas vary greatly, and the foundation of offshore wind turbines must be able to adapt to a variety of complex geology. Therefore, for complex marine geological conditions , it is especially important to fix large wind turbines and their supporting structures on the seabed. [0003] The structure of the guide frame of the single pile foundation is obviously stressed, and the guide frame can be placed on the ship's side through temporary modification, but the foundation structure of the pile group is relatively scattered, and it cannot be realized by directly placing the guide frame on the ship's side. [000...

AI Technical Summary

Problems solved by technology

[0003] The structure of the guide frame of the single pile foundation is obviously stressed, and the guide frame can be placed on the side of the ship through temporary modification, but the foundation structure of the pile group is relatively scattered, and it cannot be realized by directly placing the guide frame on the side of the ship.

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