Grouting reinforcement method for collapse of stratum around marine deepwater inclined pile

Abstract

The invention discloses a grouting reinforcement method for collapse of a stratum around a marine deepwater inclined pile. Reinforcement means of intra-pile inclined hole grouting and extra-pile inclined hole grouting are adopted, an integrated new composite foundation is formed to reinforce a soil body around the pile, the treatment effect and quality of the collapse of the stratum around the marine deepwater inclined pile are remarkable, the follow-up pile foundation construction is effectively ensured to be safely and smoothly carried out, the construction period and the economic loss are greatly reduced, the bearing capacity and the stability of the marine deepwater inclined pile foundation are effectively guaranteed, and potential safety hazards are eradicated.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a grouting reinforcement method for stratum collapse around marine deep-water inclined piles. Background technique [0002] Most of the offshore wind power pile foundations use high-performance marine concrete caps and steel pipe pile foundations. The steel pipe pile is mainly composed of a steel casing and a concrete pile inside the steel casing. With its large enough bearing capacity, relatively simple pile sinking process, small amount of soil displacement and good bending resistance, etc., it is obtained widely used. Common foundation forms of steel pipe pile foundations include single pile and high pile cap. The single pile foundation technology is relatively mature, but the disadvantages are that the pile diameter is large, the cost is high, the rigidity is small, and the water depth is limited. The high pile cap foundation generally contains 6-8 incline...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of existing deep-water inclined pile pile surrounding soil subsidence control effect is poor, unable to meet the follow-up construction and safety requirements, to provide a kind of marine deep-water inclined pile pile surrounding soil collapse grouting reinforcement method, through pile foundation In the subsidence area, the inclined hole grouting inside the pile and the inclined hole grouting on the pile side are carried out, so that the outside of the pile and the surrounding soil can be effectively and fully consolidated into a whole, so as to ensure the safe and smooth subsequent construction of the pile foundation, and ensure the bearing capacity and stability of the pile foundation Meet the design requirements

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