新型钻孔灌注桩桩端复合式后压浆施工方法
By combining open and capsule grouting methods with a composite grouting device, the problem of unstable grouting in traditional grouting processes is solved, significantly improving the bearing capacity and frictional resistance of pile foundations, shortening the construction period, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN ZHONGTIEERJU ENG CO LTD
- Filing Date
- 2026-04-17
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional post-grouting technology at the pile end cannot accurately control the grouting area, grouting pressure, and grouting volume, resulting in unstable grouting effects and large fluctuations in the degree of increase in single pile bearing capacity.
A composite grouting device is adopted, combining open grouting and capsule grouting. Through an open-closed-open composite grouting method, grouting is injected into the soil layer around the pile tip to form a cement extrusion enlargement head, thereby improving the bearing capacity of the pile foundation.
Significantly improve the ultimate bearing capacity and side friction of pile foundations, shorten pile length or increase pile spacing, increase construction speed, reduce costs, and achieve fixed-area, fixed-quantity, and fixed-pressure control of cement grout.
Smart Images
Figure CN122406758A_ABST