一种水泥土搅拌桩施工用搅拌轴及施工装置和施工方法

By using a mixing shaft with an air supply pipe and an air bladder in cement mixing piles, the compaction of cement and soil is achieved, solving the problems of low strength and poor impermeability of existing cement mixing piles, improving the bearing capacity of the pile body and composite foundation, expanding the application range and saving cement consumption.

CN117418532BActive Publication Date: 2026-07-17JIANGSU POWER TRANSMISSION & DISTRIBUTION CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU POWER TRANSMISSION & DISTRIBUTION CO LTD
Filing Date
2023-12-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing cement mixing piles have problems such as low pile strength, low vertical bearing capacity of single piles, low bearing capacity of composite foundations, poor impermeability and poor penetration ability, and their application is limited, especially when encountering thin hard layers.

Method used

A mixing shaft with an air supply pipe and an air bladder is used. The expansion of the air bladder achieves compaction of cement and soil, improving the density of the pile body. The lateral pressure of the air bladder is used to enhance the connection between piles. Combined with mixing and spraying processes, the uniform mixing of cement and soil is ensured.

Benefits of technology

It improves the strength and bearing capacity of cement-soil mixing piles, enhances the compactness of the soil around the piles, avoids water leakage, expands the application range, and saves cement consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开了一种水泥土搅拌桩施工用搅拌轴及施工装置和施工方法,属于水泥土搅拌桩的技术领域,搅拌轴包括搅拌空心轴和搅拌头;搅拌头连接在搅拌空心轴的尾部;搅拌空心轴的内部设有延伸至搅拌头的输浆管和输气管;搅拌头上安装有与输浆管相连通的喷浆嘴,喷浆嘴的端部从搅拌头的周向伸出;输气管的尾部安装有伸缩气管和气囊;搅拌头的底部设有仅能从搅拌头内部开启的单向活动门;利用输气管对气囊进行加压,并利用气囊的膨胀变大,实现整个桩身水泥土的压密,提高了水泥土搅拌桩的强度,且气囊加压还能产生对桩周土体的横向压力,使搅拌桩和桩间的土更好的连接在一起,提高了水泥土和水泥土搅拌桩的承载力。
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