Construction method of offshore implantable socketed pile

Abstract

The construction method of the offshore implantable socketed pile comprises the steps of prefabrication of a core pile, pouring of the core pile, primary grouting of the core pile, secondary grouting of the core pile, grouting of a steel casing and the core pile, pouring of concrete grout between the core pile and a steel pipe pile and in the core pile, and completion of construction of the offshore implantable socketed pile after concrete is solidified. According to the method, one pouring link of underwater core pile pouring is changed into pouring before construction, the waiting time of underwater construction pouring is saved, the installation period of offshore socketed piles is greatly shortened, and the construction window period of each pile can be saved by 2-3 days; the link of pouring before construction is prefabricated pouring in a factory, so that the strength and compactness requirements of pile bottom concrete are ensured to a certain extent, the construction window period is shortened, and the rental and use cost of an offshore construction concrete mixing ship can be saved; through the upper limiting mechanism and the lower limiting mechanism which are arranged on the peripheral surface of the core pile, the core pile can be kept concentric with the steel casing in the sinking process.

Description

technical field [0001] The invention relates to the technical field of rock-socketed piles, in particular to a construction method for offshore implanted rock-socketed piles. Background technique [0002] Wind energy is a clean energy, and offshore wind energy is more abundant than onshore. my country's coastline is long, and offshore wind energy resources are abundant in coastal areas; however, the geological conditions of wind fields in various places vary greatly, and there are a large number of cases where the seabed covering soil layer is shallow, and it is necessary to insert rock into the steel pipe pile ends of the offshore wind turbine structure foundation. [0003] The general method of rock-socketed construction of steel pipe piles is to drive the steel casing into the seabed with a vibrating hammer, and the lower end of the casing penetrates the covering soil layer to the surface of the bedrock, and then puts the drilling machine into the steel casing to rock fo...

AI Technical Summary

Problems solved by technology

However, offshore construction itself has the problem of changing wind and wave environment. The swell and gust of wind during slow sinking will cause the hook to shake, affect the relative position of the pile when planting, cause the core pile to be eccentric, and affect the quality of grouting in the later stage and the strength of the structure after grouting

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