Construction method for pulling out prestressed anchor cable
By employing a self-made anchor cable pulling drill with staged unloading and dynamic axis guidance technology, the problem of removing long and skewed prestressed anchor cables was solved, achieving a safe and controllable anchor cable removal effect.
Patent Information
- Application Number
- CN202610650010.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are difficult to use efficiently and safely to remove long and skewed prestressed anchor cables, often leading to anchor cable breakage, ejection risks, and safety hazards. Furthermore, traditional methods are prone to causing anchor cables to be cut due to axis deviation, making complete removal impossible.
A self-made anchor cable pulling drill was used to release prestress through staged unloading. A large-diameter steel casing was used to drill through the support pile to form an enlarged hole. The anchor cable axis was dynamically determined and used as a guide to gradually insert a small-diameter steel casing. The anchor cable was pulled out in sections to ensure trajectory tracking and safe extraction.
It achieved the complete, efficient, and safe removal of long and skewed prestressed anchor cables, avoiding the risks of anchor cable cutting and ejection, and ensuring the controllability and safety of the removal process.
Smart Images
Figure CN122406747A_ABST