Pile driving limit frame and construction method for offshore wind power foundation pile sinking in intertidal zone

Abstract

The invention relates to a method for construction of intertidal zone offshore wind power multi-pile conduit frame foundation pile sinking. The method is characterized in that pile sinking positioning and perpendicularity control are performed on steel pipe piles through a piling limiting frame, and a floating crane hydraulic impact hammer setting on a beach is utilized to perform hanging up and beating for pile sinking. The method comprises the steps of performing steel pipe pile processing and marine transportation, performing ship positioning, leveling the beach face of a pile sinking area, placing the piling limiting frame, injecting water to a water containing cavity in the piling limiting frame, adjusting the levelness of the piling limiting frame, vertically lifting the steel pipe piles, inserting the steel pipe piles in a pile holding device of the piling limiting frame, utilizing a piling hammer for pile pressing and utilizing the piling hammer for pile sinking. The method has the advantages that the steel pipe piles are guided and limited through the piling limiting frame, pile sinking perpendicularity is guaranteed, accuracy of relative positions of the steel pipe piles of every foundation is guaranteed, construction of a whole fan foundation can be finished by one-time ship parking, a construction process is simplified, and construction efficiency is greatly improved.

Description

technical field [0001] The invention belongs to a construction method for pile foundations on water, and in particular relates to a pile-driving limit frame and a construction method for pile sinking of an offshore wind power foundation in an intertidal zone. Background technique [0002] As a kind of renewable clean energy, the development and utilization of wind energy resources has gradually received widespread attention, and the construction of wind farms has gradually developed from land to sea. At present, in terms of domestic offshore wind power planning, intertidal wind farms occupy a large share. Offshore wind power foundations mainly include low-pile high-pillar foundations, single-pile foundations, and multi-pile jacket foundations. [0003] The intertidal zone is a tidal flat that is submerged when the seawater reaches its highest tide and exposed when it recedes to a low tide. However, due to the low bearing capacity of the foundation and the submersion of the ...

AI Technical Summary

Problems solved by technology

However, the multi-pile pile holder of this technology has extremely high requirements on the rigidity of each component, and the impact force during the pile sinking process can easily damage the pile holder, and this technology only effectively solves the problem of multi-pile positioning, and cannot Effective control of the verticality of steel pipe piles during pile sinking

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