一种超长劲性复合桩废桩的处理方法
CN117845926BActive Publication Date: 2026-07-17MCC CHENGDU RES INST CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- MCC CHENGDU RES INST CO LTD
- Filing Date
- 2024-01-24
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In existing technologies, the failure of ultra-long PHC pipe piles to be properly pressed or the bursting of the pile head can lead to unrepairable piles, affecting the quality and efficiency of the project.
Method used
The method of using a down-the-hole hammer for symmetrical pre-drilling, employing thin-skinned PVC pipes for pipe insertion, and backfilling with river sand to treat the waste piles of ultra-long stiff composite piles reduces pile end resistance and pile side friction, protects the borehole, and ensures smooth extraction.
Benefits of technology
It enables rapid and efficient treatment of waste piles in ultra-long and stiff composite piles, improving the accuracy and efficiency of construction and reducing the risk of borehole collapse in engineering projects.
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Smart Images
Figure CN117845926B_ABST
Abstract
本发明公开了一种超长劲性复合桩废桩的处理方法，包括步骤为将待拔废桩定位，PHC管桩通过水泥土设置在桩周土上，定位水泥土与桩周土的交界面；通过潜孔锤对交界面对称引孔，在交界面上钻出对称孔组；使用薄皮PVC管在对称孔组的位置进行跟管转进；吊拔废桩，清除薄皮PVC管；拔出后的劲性复合桩孔采用河沙回填，为后续植桩做准备。本发明通过超长劲性复合桩废桩的处理方法解决了现有技术中的高强混凝土管桩难以修复的技术问题。
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