Preparation method of full-replacement variable-cross-section cement-soil pile

Through the preparation method of fully replaced and variable cross-section cement soil piles, a long auger and a high-speed mixer are used to solve the problem of uneven mixing of cement soil mixing piles in the clay layer, the construction quality and bearing capacity are improved, and the energy saving and emission reduction and engineering cost are achieved.

CN119640774AActive Publication Date: 2025-03-18SHANDONG DINGXIN GEOTECHNICAL TECH CO LTD
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Patent Information

Application Number
CN202411865586.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-03-18
Estimated Expiration
2044-12-18

AI Technical Summary

Technical Problem

The existing cement soil mixing piles are unevenly mixed in the clay layer, which makes it difficult to ensure the construction quality, and the pile body strength is low, making it easy to cause engineering accidents in which deformation control fails.

Method used

The preparation method of fully replaced variable-section cement soil piles is adopted, and holes are formed through a long auger drilling rig, and cement soil slurry is prepared using a high-speed mixing mechanism, and pumped to the bottom of the hole through a concrete pump to form a variable-section structure, which solves the problem of uneven mixing.

Benefits of technology

It improves the construction quality and bearing capacity of cement piles, reduces cement consumption, complies with energy conservation and emission reduction policies, reduces energy consumption, and reduces engineering costs, and has great economic and social benefits.

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Abstract

The invention relates to the technical field of construction engineering, in particular to a preparation method of a full-replacement variable-cross-section cement-soil pile. According to the cement soil pile, a long spiral drilling machine is adopted for drilling a hole in a foundation soil layer, a drill rod is rotated when lifted, and under the action of a cutting tool bit of a special drill bit, the drill rod is rotated, lifted and pumps cement soil slurry at the same time, so that a variable cross-section shape can be formed in the required position of a pile body. Holes are firstly formed, soil is taken out, water, cement, a curing agent and the like are added for stirring outside the holes, and then the soil is poured into pile holes under pressure, so that the full-replacement variable-cross-section cement-soil pile is formed. The novel replacement type variable-cross-section cement-soil pile is formed, the problem that stirring of a stirring pile is not uniform when the stirring pile meets a clay layer is solved, and the construction quality of the cement-soil pile is improved; the bearing capacity of the cement-soil pile is improved through the variable cross section; compared with an in-situ stirring method, the full-replacement cement-soil pile can reduce cement consumption, and conforms to the policy of energy conservation and emission reduction.
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