弹片卡接的预紧机械接头、预制混凝土桩及连接方法
The pre-tightened mechanical joint with spring clips solves the problem of axial gaps in the connection of precast concrete piles by existing mechanical joints, realizes high-strength pile connection, meets crack control requirements, and improves the safety and durability of pile foundation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI JIEGU CONSTR TECH CO LTD
- Filing Date
- 2023-09-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing mechanical joints are prone to generating axial gaps when connecting precast concrete piles, leading to cracks at the pile connection. This fails to meet the crack control requirements in the "Technical Standard for Prestressed Concrete Pipe Piles" and poses safety hazards and durability issues.
The pre-tightening mechanical connector uses a spring clip to engage with the plug. The pre-tightening nut drives the elastic clip to abut against and lock the plug's anti-reverse surface in the axial direction of the large nut, eliminating the axial gap between the plug and the pre-tightening nut. The axial locking of the pre-tightening nut and the insertion rod also eliminates the axial gap of other components.
It effectively eliminated the axial gap at the connection of precast concrete piles, improved the pull-out, bending and shear resistance of the pile connection, met the requirements of the "Technical Standard for Prestressed Concrete Pipe Piles" regarding crack level, and eliminated safety hazards and corrosion risks.
Smart Images
Figure CN117385867B_ABST