Maintenance-free prestressed CFRP-plate steel cylinder concrete pipe and method for producing the same
By using asymmetric trapezoidal CFRP plates and a high-ductility concrete protective layer in prestressed steel cylinder concrete pipes, the problems of easy fracture and warping deformation of carbon fiber composite materials are solved, improving the durability of the pipeline and reducing operation and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TSINGHUA UNIVERSITY
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
In existing prestressed steel cylinder concrete pipes, carbon fiber composite reinforcement is prone to breakage and the ends of the plates are prone to warping and deformation, resulting in poor durability and high operation and maintenance costs.
The system employs CFRP sheets with an asymmetric trapezoidal cross section and a high-ductility concrete protective layer, combined with a composite material reinforcement layer, to ensure stable prestress transfer and prevent warping deformation. The external protective layer possesses crack resistance and self-healing properties.
It improves the structural stability and durability of prestressed steel cylinder concrete pipes, reduces maintenance requirements and costs, and achieves lightweight and ultra-long service life.
Smart Images
Figure CN122407877A_ABST