一种预注气预注浆复合桩施工方法
By simultaneously injecting compressed air and grout into the drill rod, the problems of long rest periods and limited friction caused by pore water pressure in precast pile construction were solved, enabling rapid soil solidification and improving the bearing capacity and construction efficiency of the pile foundation.
CN122406743APending Publication Date: 2026-07-17HUNAN QIYAN ZHUCHUANG ENGINEERING TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUNAN QIYAN ZHUCHUANG ENGINEERING TECHNOLOGY CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The existing precast pile construction suffers from problems such as long rest periods due to pore water pressure and limited improvement of pile foundation friction, especially in areas with high groundwater levels where grout cannot deeply replace the soil.
Method used
Compressed air is injected synchronously through the drill rod to displace pore water and expand the pores. Grout is then injected, and the combined action of high-pressure air and grout promotes grout penetration and solidifies the soil to form a composite pile.
Benefits of technology
It shortened the rest period, improved the bearing capacity and friction of the pile foundation, and enhanced construction efficiency and pile foundation performance.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122406743A_ABST
Abstract
本发明公开了一种预注气预注浆复合桩施工方法，其包括以下步骤：1）、利用钻杆钻孔，同步通过钻杆向钻头底部注入压缩空气，整个钻孔过程中不使用护筒；2）、向钻孔中注入浆液；3）、将预制桩沿着钻孔压入到预定的深度，预制桩的桩径大于钻孔的孔径。本发明的预制桩施工方法不但能节省工期（休止期），还具有较高的承载力性能。
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