Large-diameter pile foundation anti-sloughing hole construction method and anti-sloughing hole structure thereof

By using an expandable wall guard sleeve and optimizing the connection structure in the pile foundation hole, the compaction problem of the pipe drilling system under irregular hole walls or slight collapse is solved, the risk of collapse of the hole is reduced, and the construction safety is improved. efficiency.

CN119163349APending Publication Date: 2024-12-20湖北鄂东桩基工程有限公司
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Patent Information

Application Number
CN202411174867.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-08-26
Publication Date
2024-12-20

AI Technical Summary

Technical Problem

The existing pipe drilling system has poor compaction effect when facing irregular hole walls or slight collapse, and there is a risk of hole collapse. The existing solutions are complex in operation and limited in effect.

Method used

A specially made wall guard sleeve with an expandable and contractible structure, installed and expanded in the pile foundation hole to fit the side walls closely, providing stable support, and ensuring elastic steel plates through an optimized connection structure and top support mechanism Press tightly on the hole wall to improve support and construction safety.

Benefits of technology

It effectively reduces the risk of collapse in large-diameter pile foundation construction, improves construction safety and efficiency, and enhances the overall stability of the structure and construction flexibility.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a large-diameter pile foundation anti-sloughing hole construction method and an anti-sloughing hole structure thereof, and relates to the technical field of pile foundation construction.The large-diameter pile foundation anti-sloughing hole construction method comprises the following steps that 1, a pipe-following drilling system is used for drilling, and a pile foundation hole is formed; 2, in the drilling process of the pile foundation hole, a specially-made wall protection sleeve is installed in the pile foundation hole, and an expandable or contractible structure is arranged on the wall protection sleeve; 3, after the wall protecting sleeve is installed in the pile foundation hole, the wall protecting sleeve is expanded and tightly attached to the side wall of the pile foundation hole, and stable supporting force is provided; step 4, performing subsequent drilling operation under the protection of the wall protection sleeve until the designed depth is reached; and 5, after drilling is completed, the wall protecting sleeve is shrunk, and the wall protecting sleeve is taken out of the pile foundation hole. The problem that a traditional pipe-following drilling system is poor in tamping effect when facing irregular hole walls or under the slight collapse condition is solved, so that the hole collapse risk is reduced, and the construction safety and efficiency are improved.
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