Scouring pile foundation reinforcing method based on MICP curing principle

Through split grouting components and real-time monitoring technology based on MICP curing principle, the problems of low efficiency and high cost of pile foundation reinforcement in marine environments are solved, and the accurate, reliable and economic reinforcement effect of pile foundations is achieved.

CN120250736APending Publication Date: 2025-07-04FUJIAN UNIV OF TECH
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Patent Information

Application Number
CN202510477205.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-16
Publication Date
2025-07-04

AI Technical Summary

Technical Problem

The existing pile foundation reinforcement technology is inefficient and costly in the marine environment, the traditional grouting and reinforcement methods are insufficient in durability, and the construction of outsourcing steel pipes or reinforced concrete is complex and costly, making it difficult to effectively deal with complex marine erosion and geological conditions.

Method used

The reinforcement method based on the MICP curing principle is adopted, and the grouting parameters and slurry ratio are formulated by obtaining initial environmental information, split grouting components and real-time resistivity monitoring are used to dynamically adjust the grouting process, and combined with layered detection and grouting strategies, precise reinforcement of the pile foundation is achieved.

Benefits of technology

The accuracy and reliability of pile foundation reinforcement are achieved, the construction complexity and cost are reduced, and environmental adaptability and reinforcement effect are improved.

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Abstract

The invention discloses a scouring pile foundation reinforcement method based on an MICP curing technology, which comprises the following steps: acquiring initial environment information such as scouring pit parameters, water flow parameters, tide period and seawater salinity of a delimited area around a pile, and determining grouting parameters such as a grouting window period and a safe flow velocity threshold value and a matching numerical value of a bacterial liquid concentration, a urea concentration and a calcium ion concentration; a grouting assembly composed of a first grouting pipe and a second grouting pipe which are spliced up and down is arranged, and grouting holes are formed in the side wall of the second grouting pipe which is pre-buried in a soil layer; after MICP slurry is prepared according to blending parameters, the slurry is injected into a soil layer in combination with grouting parameters, and meanwhile, the grouting process is dynamically adjusted by monitoring the resistivity of a soil body in real time; and after grouting is completed, the assembly is dismantled, and supplementary grouting is conducted on the local area according to the detection result. According to the method, the accuracy and reliability of pile foundation reinforcement are achieved through environmental parameter adaptation, grout dynamic regulation and control and layered detection and reinjection.
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